U.S. ENVIRONMENTAL PROTECTION AGENCY
APPLICATION OF AUT0-QUAL
MODELLING SYSTEM TO THE
PATUXENT RIVER BASIN
December 1973
Technical Report 58
Annapolis Field Office
Region III
Environmental Protection Agency
MIDDLE ATLANTIC REGION-III 6th and Walnut Streets, Philadelphia, Pennsylvania 19106
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EPA-903/9-74-013
APPLICATION OF AUT0-QUAL
MODELLING SYSTEM TO THE
PATUXENT RIVER BASIN
December 1973
Technical Report 58
Annapolis Field Office
Region III
Environmental Protection Agency
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EPA-903/9-74-013
Annapolis Field Office
Region III
Environmental Protection Agency
APPLICATION OF AUTjfl-QUAL MODELLING SYSTEM
TO THE PATUXENT RIVER BASIN
Thomas H. Pheiffer
Norman L. Lovelace
Annapolis Field Office Staff
Maryann L. Bonning Sigrid R. Kayser
Tangie L. Brown Donald W. Lear, Jr.
Leo J. Clark Evelyn P. McPherson
Gerald W Crutchley James W. Marks
Daniel K. Donnelly Margaret S. Mason
Gerard R. Donovan, Jr. Margaret B. Munro
Margaret E. Fanning Maria L. O'Malley
Bettina B. Fletcher Thomas H. Pheiffer
Norman E. Fritsche Susan K. Smith
Victor Guide Earl C. Staton
George H. Houghton William M. Thomas, Jr.
Patricia G. Johnson Robert L. Vallandingham
Ronald Jones Orterio Villa, Jr.
Deborah A. Valentine
*EPA, Washington, D.C.
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The model described herein, has been utilized by the
Maryland Environmental Service to evaluate water quality plans
for the Patuxent River Basin. Specifically, the model was used
to predict the dissolved oxygen response that would be expected
to occur as a result of the BOD loadings projected for the major
discharges in the free-flowing Patuxent and Little Patuxent
Rivers in years 1980 and 2000 under two alternative facilities
plans, i.e., with regional treatment and without regional treat-
ment. The seven day-ten year low flows were used for all model
production runs.
The facilities plans for the Patuxent River Basin are
described in The Patuxent River Basin Hater Quality Management
Plan prepared by the Maryland Environmental Service.
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ABSTRACT
During the 1973 summer sampling season water quality data
were collected in the Patuxent River Basin in order to calibrate
and verify mathematical models for the purposes of dissolved
oxygen and salinity prediction. The calibration and verification
processes are described together with a presentation of the
field data for further application by interested parties.
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TABLE OF CONTENTS
I. INTRODUCTION PAGE 1
II. STUDY AREA DESCRIPTION 2
III. DATA ACQUISITION 3
IV. MODEL APPLICATION 7
V. MODEL CALIBRATION AND VERIFICATION 8
VI. PATUXENT MAINSTEM CALIBRATION AND VERIFICATION 9
VII. LITTLE PATUXENT CALIBRATION AND VERIFICATION 11
VIII. PATUXENT ESTUARY CALIBRATION AND VERIFICATION 12
IX. DISCUSSION ID
X. APPENDICES 36
A. Patuxent River Basin Map and Station Descriptions
B. Stream Discharge Data
C. Wastewater Treatment Plant Data
D. Water Quality Sampling Data
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LIST OF FIGURES
Number Title
1 Patuxent River DO Model Calibration, 17
July 15-19, 1968
2 Patuxent River DO Model Calibration, 18
June 4-7, 1973
3 Patuxent River DO Model Verification, 19
July 9-12, 1973
4 Little Patuxent River DO Model 20
Calibration, June 7, 1973
5 Little Patuxent River DO Model 21
Verification, July 9, 1973
6 Little Patuxent River DO Model 22
Verification, July 10, 1973
7 Little Patuxent River DO Model 23
Verification, July 11, 1973
8 Little Patuxent River DO Model 24
Verification, July 12, 1973
9 Patuxent Estuary Salinity Model 25
Calibration, June 7, 1973
10 Patuxent Estuary Salinity Model 26
Verification, July 9, 1973
11 Patuxent Estuary Salinity Model 27
Verification, July 10, 1973
12 Patuxent Estuary Salinity Model 28
Verification, July 11, 1973
13 Patuxent Estuary Salinity Model 29
Verification, July 12, 1973
14 Patuxent Estuary DO Model Calibration, 30
June 7, 1973
15 Patuxent Estuary DO Model Calibration, 31
July 12, 1973
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LIST OF FIGURES (cont.)
Title Page
16 Patuxent Estuary DO Model Verification, 32
October 9, 1973
17 Patuxent Estuary DO Model Verification, 33
October 10, 1973
18 Patuxent Estuary DO Model Verification, 34
October 11, 1973
19 Patuxent Estuary DO Model Verification, 35
October 12, 1973
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INTRODUCTION
The purpose of this report is to set forth the progress which
has been made on the application of mathematical models by the
Annapolis Field Office to the Patuxent River System.
Single channelled models from the AUT0-QUAL Modelling System
have been calibrated and validated for the free-flowing mainstem of
the Patuxent River and the Little Patuxent River. The models used in
this project have successfully predicted dissolved oxygen concentra-
tions in both the free-flowing Patuxent and the Little Patuxent
Rivers during the week of July 9, 1973. The models of these two
areas are available to predict dissolved oxygen response to changes
in volume and/or concentration of point sources of carbonaceous and
nitrogenous BOD loadings under various stream flow conditions and
temperatures. When quantified, non-point sources of pollution can be
input into the AUT0-QUAL Modelling System and the effects of the
non-point sources of pollution can be predicted.
Progress on model application to the Patuxent Estuary includes
the calibration and verification of a model capable of predicting
salinity profiles throughout the estuary and dissolved oxygen
profiles in part of the estuary. The affect of freshwater inflows
into and diversions out of the estuary on salinity regimes can now
be predicted throughout the entire length of the estuary. The
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critical portion of the estuary, i.e. from Benedict Bridge (river
mile 22.2) upstream to Hardesty, the approximate head of tide
(river mile 55.0) has been verified for dissolved oxygen predictions.
It is this upper one-half of the estuary that will be subjected to
increases of wastewater loadings in the near future.
The models of the free-flowing Patuxent and the Patuxent Estuary
can be run as one continuous model if it is necessary to evaluate the
affect of an upstream loading over the entire basin. The models can
also be used for coverage of critical areas only, by specifying
upstream and downstream boundary conditions for the critical reach
under examination.
STUDY AREA DESCRIPTION
The Patuxent River Basin, located entirely in the State of
Maryland, has a drainage area of approximately 930 square miles. Its
two major tributaries are the Little Patuxent River and Western
Branch with drainage areas of 160 and 110 square miles, respectively.
The tidal portion extends to Hardesty, Maryland, a distance of about
55 miles from the mouth of the river at Drum Point, river mile 0.0.
The headwaters of the free-flowing Patuxent are impounded above
Laurel, Maryland in the Triadelphia and T. Howard Duckett Reservoirs.
The impoundments provide for generally regulated flows in the mainstem
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of the Patuxent downstream to the confluence of the Little Patuxent
with the mainstem. The Little Patuxent is not regulated by dams
and exhibits flashy flow patterns following thunderstorm activity.
Surging flows into the estuary during the summer are attributed
mainly to the Little Patuxent. Total annual precipitation in the
basin is estimated at 30 to 44 inches per year with the maximum
precipitation occurring in July and August.
DATA ACQUISITION
For the purpose of obtaining data for model application, 52
water quality sampling stations were located in the Patuxent River
Basin. Twenty-seven of these stations were located in the estuary
between river mile 0.0 and 55.0. Fourteen stations were located in
the free-flowing mainstem of the Patuxent between river mile 55.0
and river mile 81.0 at Laurel, Maryland downstream from Rocky Gorge
Dam. Eleven sampling stations were established in the Little
Patuxent from its confluence with the mainstem upstream to Savage,
Maryland, river mile 18.0. (See Appendix A for Basin map and
station descriptions).
Water quality surveys were carried out in the Basin during
April 3-5, June 4-7, July 9-12 and October 9-12, 1973. The June
and July intensive surveys encompassed the entire Basin. The
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April and October surveys were confined to the estuary with the
April survey designed to determine rough salinity gradients for
determining estimates of the dispersion coefficients. The October
survey measured surface and bottom dissolved oxygen concentrations
for model verification. Data collected in the estuary were obtained
during slack water conditions.
There are 5 temporary stream discharge gages located in the
upper basin. The gages are located at the following sites:
(1) Little Patuxent River near Savage (Brock Bridge Road)
(River Mile 15.3)
(2) Little Patuxent River at State Route 424 Bridge
(River Mile 2.8)
(3) Patuxent River at Montpelier, Baltimore-Washington
Parkway
(River Mile 75.0)
(4) Patuxent River at Pigeon House Corner
(River Mile 63.5)
(5) Patuxent River at John Hanson Highway (U.S. Route 50)
(River Mile 60.5)
The above gages are not maintained on a regular basis by the
United States Geological Survey. Under a contract with U.S.G.S.,
current-meter discharge measurements were made at each site during
the June and July studies and prior to the October survey. This
enabled U.S.G.S. to furnish stream discharges for the gage heights
read at the time of sampling.
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In addition to the temporary gages, two permanent continuous
recording gages, one at Rocky Gorge Dam (river mile 80.9) and the
other at Largo, Maryland (river mile 11.1) on Western Branch,
provided flow data for model usage. Stream discharges measured
during the intensive surveys are set forth in Appendix B.
Flows recorded at Route 50 Bridge and Western Branch were used
as freshwater inputs into the estuary. Since the gage for Western
Branch is located a considerable distance upstream from the confluence
with the Patuxent, a yield factor (cfs/sq. mi.) was computed to
adjust the gage readings to represent flows at the confluence. Flows
measured at Rocky Gorge Dam and at the mouth of the Little Patuxent
River were inputs into the free-flowing Patuxent model. Flows
recorded at Savage, Maryland, were used as starting flows for the
Little Patuxent Model. Flows from each treatment plant were entered into
the models at their respective river mile point of discharge.
Estuary data were collected during low slack water or high slack
water stages. Time of occurrence of the tides allowed only high slack
water runs on July 11-12 and only low slack water runs on October 12, 1973.
The parameters sampled and measured in the AFO laboratory during
the June and July surveys were as follows: DO, BODg, TOC, TC, TKN,
NH_, N02+NO.,, Pi, TP and Chloro. a_. Salinity, conductivity, temperature,
and pH were routinely measured in the field. A complete set of the
sampling data is set forth in Appendix D.
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Special studies included long-term BOD at specified estuarine and
stream stations for the purpose of attempting to measure instream
carbonaceous and nitrogenous demand rates. Methyl blue, an inhibitant
to the bacterial oxidation of organic nitrogen and ammonia, was
injected into duplicate samples for determining the second stage
oxygen demand (nitrogenous BOD).
Twenty-four hour composite samples of wastewater treatment plant
effluents were obtained from the major plants in the basin during the
June and July surveys. Composite treatment plant data were also
available from a survey by the Annapolis Field Office during October,
1972. Although there are an estimated 60 wastewater discharges in
the basin, the 9 plants listed below provide the bulk of the wastewater.
Western Branch Patuxent
Bowie-Bel air Fort Meade Nos. 1 & 2
Laurel Park Md. House of Correction
Maryland City Savage
During the July 10-11 24-hour composite sampling period these
plants discharged a total 24.9 million gallons of effluent to the
Patuxent system. The nature of the effluent from individual plants
is shown in Appendix C.
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MODEL APPLICATION
Two models from the CMS (Comprehensive Modelling System), a
system of mathematical models developed by Crim and Lovelace, were
applied to the Patuxent River System. The two models used were
AUT0SS and AUJ0IQD.
Both AUT0SS and AUT0QD are composed of a hydraulic component that
computes the streamflow profile and a water quality component that
computes a concentration profile of instream constituents. The
models are one-dimensional, single-channelled models that use first
order kinetics to represent instream biological-chemical processes.
AUT0SS is a steady-state model while AUT0QD is a quasi-dynamic model,
representing flow patterns as step shaped patterns in time and water
quality concentrations as continuous patterns.
When AUT0SS and AUT0QD were applied to the Patuxent Estuary,
dispersion coefficients were emperically determined to represent tidal
mixing. The dispersion coefficients used in the models are discussed
under the section of this report dealing with model calibration and
verification for the Patuxent Estuary.
The AUT0-QUAL models have been modified to receive non-point
sources of substances and flow. When quantified, the oxygen content
and the carbonaceous and nitrogenous BOD loadings of any given non-
point source can be entered into the stream or estuary. Partial use
of this modification was made in the calibration of the model for the
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Little Patuxent River.
Complete documentation of and operation instructions for AUT0SS
and AUT0QD are set forth in EPA Technical Report 54, AUT0-QUAL MODELLING
SYSTEM, authored by Robert L. Crim and Norman L. Lovelace. Report 54
and documentation of the non-point source modification are available
from the Annapolis Field Office, Region III or the Monitoring and
Data Support Division, EPA, Washington, D. C.
MODEL CALIBRATION AND VERIFICATION
It is critical that model calibration and verification be under-
stood and carried out when applying models to real world situations.
The model calibration process consists of matching a predicted
profile, such as dissolved oxygen, to an observed profile by means of
adjusting the calibration constants. Coefficients for dispersion (E),
CBOD decay rates (K ), NBOD decay rates (Kn) and reaeration rates (K2)
are adjusted to match the DO model profile with the observed profile.
Some differences in magnitude between model results and the
actual data can be expected, but the general shape of the two curves
should always correspond.
A variety of hydrologic conditions should be run for verification
utilizing the coefficients derived from the calibration process. High,
medium and low flow conditions will show the ability of the model to
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correctly respond to real world situations.
Too many instances of using a model calibrated to a specified flow
condition to predict stream reactions at extreme flows without field
data to confirm the predictions have occurred. The validity of planning
decisions on this basis remains in question.
PATUXENT MAINSTEM CALIBRATION AND VERIFICATION
Data on the free-flowing portion (for the period July 15-19, 1968)
are available from a cooperative study with the Maryland Department
of Water Resources. Both the 1968 and the current data show the main-
stem to contain high concentrations of nitrogen. These high nitrogen
concentrations are attributed to wastewater treatment plant discharges
of excessive amounts of TKN and NH3 forms of nitrogen.
AUT0SS was calibrated to simulate DO conditions in the mainstem
for the periods July 15-19, 1968 and June 4-7, 1973. Carbonaceous
(CBOD) and nitrogenous (NBOD) loadings from the treatment plants were
entered into the model at specified river miles. These loadings were
calculated from the commonly used literature values where ultimate
CBOD = 1.45 BOD5 and ultimate NBOD = 4.57 TKN. Relatively steady-state
low flow conditions occurred during July 1968 and medium flow conditions
occurred during June 1973. The out-flow at the downstream junction of
the model was 120.1 cubic feet per second (cfs) and 413.4 cfs,
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10
respectively. Stream velocities used in model calibration were obtained
from 1966-1968 studies by the Annapolis Field Office of time-of-travel
and from depth measurements made during the 1973 studies.
The model was calibrated by testing various carbonaceous and
nitrogenous BOD decay rates. Figures 1 and 2 show the results of
calibration using CBOD decay rates (I/day base e) of 0.6, 0.6, 0.4,
and 0.4 at river miles 58.0, 64.0, 68.0 and 75.0, respectively, and
NBOD decay rates (I/day base e) of 0.3, 0.4, 0.7, 0.7, 0.4 and 0.2
at river miles 60.0, 66.0, 69.0, 71.0, 73.0 and 75.0, respectively. A
concentration of 0.0 mg/1 DO was assumed for the plant effluents.
Observed DO, CBOD and NBOD values were entered at river mile 81.0,
below Rocky Gorge Dam, and mile 63.8 where the Little Patuxent joins
the mainstem.
During the week of July 9-12, 1973, an average net flow of 164.2
cfs was recorded in the mainstem of the Patuxent. The calibrated
coefficients obtained from the July 1968 and June 1973 model runs were
used in the model verification runs. Treatment plant discharge values
for carbonaceous and nitrogenous oxygen demand loadings used in the
model reflected the results of the composite sampling of July 10-11, 1973.
Observed DO values were assigned to major inflows while a DO of
0.0 mg/1 was fixed for treatment plant effluents. The model
verification curve for this flow period is shown in Figure 3.
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11
LITTLE PATUXENT CALIBRATION AND VERIFICATION
AUT0QD was utilized in the calibration and verification of the
Little Patuxent. Actual flows for each day for the period June 4-7,
1973 recorded at Savage, Maryland, and daily concentrations of DO,
carbonaceous BOD, and nitrogenous BOD were entered into the model at
starting river mile 18.0 and at the river mile locations of the
wastewater treatment plants. Figure 4 shows the results of calibration
using a CBOD decay rate (I/day base e) of 0.4 for the entire length
of the Little Patuxent River under study (mile 0.0 to 18.0) and NBOD
decay rates (I/day base e) of 0.4, 0.6, 0.6, and 0.2 at river miles
0.0, 1.0, 11.0, and 15.5.
Flow increments attributable to small feeder stream and non-point
sources of runoff were noted between the stream gages at river miles
15.5 and 2.8. Lovelace's non-point source program was applied to account
for these flow increases. Based on the flow differences between
the two gages for each day during the period June 4-7, 1973, daily
oxygen loadings (Ibs/day) were calculated and entered into the model for
even distribution between river miles 4.0 and 15.0. It was assumed
that a minimum of 4.0 mg/1 DO would be found in surface runoff and in
small feeder streams. Corresponding loadings for CBOD and NBOD were
not quantified. While estimates of 2.0 - 3.0 ppm BODr from urban
runoff were cited in older reports on the Patuxent Basin, much model
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12
testing of these estimates against stream quality conditions under
varying stream flow and surface runoff would be needed.
AUT0QD verification runs were made using the calibration
coefficients determined from the June 4-7, 1973 data to match field
data profiles for the period July 9-12, 1973. Daily concentrations
of DO, NBOD and CBOD were input into the model at starting mile 18.0
along with the daily pounds of DO from non-point sources at selected
daily flows for the period July 9-12, 1973. Figures 5-8 show
AUT0QD model verification and daily flows for the period
July 9-12, 1973.
PATUXENT ESTUARY CALIBRATION AND VERIFICATION
Slack water runs were made during April 3-5, 1973, to get a
feel for salinity gradients in the estuary and for rough calibration
of dispersion coefficients. From June 4-7, 1973, a series of low
and high slack water runs were carried out in the estuary. Temperature,
salinity and conductivity were measured at various depths, usually
at surface, 25 feet and 40 feet at stations below Benedict Bridge and
at surface, 10 feet and 20 feet at stations above the bridge. Cross-
sectional averages were calculated, based on the depth measurements
and cross-sections.
Seaward boundary conditions (river mile 0.0) were fixed from
the salinity data and daily freshwater flows entered into the model
at the fall line (river mile 55.0) and at the mouth of Western Branch
(river mile 45.0).
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13
AUT0QD was run and calibrated for the period June 4-7, 1973. The
results of the June 7 calibration run are shown in Figure 9. The
dispersion coefficients used in the model to represent tidal mixing
were as follows:
River Mile
0.50
1.50
2.50
3.50
4.50
5.50
6.50
7.50
8.50
9.50
10.50
11.50
12.50
13.50
14.50
15.50 - 54.50
Dispersion Coefficient (SQFT/SEC)
7,750
7,250
6,750
6,250
5,750
5,250
4,750
4,250
3,750
3,520
2,730
2,190
1,650
1,110
570
300
The above dispersion coefficients were used in model verification
to reproduce salinity profiles of the estuary based on the field data
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14
collected during slack water conditions covering the period July
9-12, 1973. The daily predictions of AUT0QD covering this period and
the freshwater flows used in the model are presented in Figures 10-13.
Efforts were concentrated in the critical reach of the estuary --
river mile 22.2, Benedict Bridge, to river mile 55.0, Hardesty, Maryland --
for the purpose of calibrating and verifying a model to predict dissolved
oxygen concentrations. Surface samples of dissolved oxygen were
collected during the June 4-7 and July 9-12, 1973 surveys. It was
found that the surface samples showed extreme fluctuations in
dissolved oxygen from day-to-day and station-to-station, possibly
attributable to wave action and wind interference and photosynthesis.
A survey was carried out from October 9-12, 1973, at which time both
surface and bottom samples were used as the initial conditions for
model verification.
AUT0QD was calibrated to match observed DO concentrations in the
upper one-half of the estuary for the June 4-7, 1973 and July 9-12, 1973.
Daily carbonaceous and nitrogenous loadings from the free-flowing Patuxent
River and from Western Branch, together with the daily stream flows,
were entered into the model at river miles 55.0 and 45.0, respectively.
The DO calibration curves for the last day of the two study periods
are set forth in Figures 14 and 15. In the application of all the
models average temperatures for the study periods were specified.
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15
The calibration constants used in the model were as follows:
CBOD decay rates (I/day base e) of 0.5 (mile 55.0), 0.4 (mile 45.0),
0.05 (mile 40.0); BBOD decay rates (I/day base e) of 0.3 (mile 55.0),
0.3 (mile 45.0), 0.05 (mile 44.0), 0.02 (mile 40.0), 0.02 (mile 33.0),
0.20 (mile 22.0); photosynthesis rates (gr. 02/m2/dajr), 0.0 (mile 46.0)
2.5 (mile 45.0), 2.5 (mile 38.0), 2.0 (mile 37.0), 2.0 (mile 22.0);
2
and the rates for oxygen uptake of sediments (gr. 0?/m /day) of
1.1 (mile 45.8), 1.2 (mile 43.5), 2.5 (mile 38.1), 3.2 (mile 33.0),
3.1 (mile 22.2).
The photosynthesis rates were estimated from observed chlorophyll
a^ data. The benthic demand rates were field measured during the
week of August 20, 1973, by biologists from the EPA, National Field
Investigations Center, Cincinnatti, Ohio. The stations measured --
Bristol Landing, Jug Bay, Nottingham, Lower Marlboro, and Benedict
Bridge -- correspond to the rates and river miles mentioned above.
AUT0QD verification runs were made using the above calibration
coefficients and the field data and flows measured for the period
October 9-12, 1973. Figures 16-19 show AUT0QD model verification
and daily flows for the October 9-12, 1973 period.
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16
DISCUSSION
The AUT0-QUAL Models discussed in this report were given to
staff members of the Maryland Environmental Service as part of the
technical assistance function of EPA provided by PL 92-500. The
models will provide an additional technical tool to the State of
Maryland in its development of Section 303(e) Basin Plans for the
Patuxent River.
The State of Maryland intends to adopt a policy on effluent
standards for municipal wastewater discharges into surface waters
in the Patuxent River Basin. This policy will require that all new
treatment plants of any capacity to 1.0 mgd or more be designed for
high degrees of removal of nitrogen, suspended solids and BOD5. All
existing plants over 1.0 mgd will be required by the State to meet
the stringent effluent standards by July 1, 1978.
It is believed that EPA could assist Maryland in the
identification and quantification of non-point sources of
pollution in the Patuxent River Basin. This assistance should
include a mass balancing of nutrient loadings in the free-flowing
mainstem of the Patuxent River and the Little Patuxent River to
account for and distinguish between point and non-point loadings
of nutrients at specific river mile locations. The fate of the
nutrients, including deposition and chemical change, should be
described in terms of their role in the biological balance of the
stream and the estuary.
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PATUXENT RIVER -FREE FLOWING SECTION
17.0-
16.0-
15.0-
14.0-
13.0-
12.0-
_ 11.0-
o.
5 10.0-
z
O 9.0H
O
z
O
O
8.O-
7.0-
6.0-
5.0-
4.0-
3.0-
2.0-
1.0-
0.0
FIELD
DATA
AVERAGE > RANGE
DATE: 7/15- 7/19. 1968
PARAMETER(S): DISSOLVED OXYGEN
NOTES: MODEL CALIBRATION
FLOW-120.1 cfs (RIVER MILE
-55.0) FIELD DATA
MODEL PREDICTION
o
33
m
46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82
RIVER MILE
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PATUXENT RIVER - FREE FLOWING SECTION
17.0-
16.0-
15.0-
14.0-
13.0-
12.0-
a
i 10.0-
O 9.01
<
cr
O
u
8.0-
7.0-
6.0-
5.0-
4.0-
3.0-
2.0-
1.0-
0.0
FIELD
DATA
AVERAGE
RANGE
DATE: 6/4 - 6/7. 1973
PARAMETER(S): DISSOLVED OXYGEN
NOTES: MODEL CALIBRATION
FLOW-413.4 cfs (RIVER MILE
-55.0) FIELD DATA
MODEL PREDICTION
c
JO
m
ro
46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82
RIVER MILE
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PATUXENT RIVER - FREE FLOWING SECTION
17.0-
16.0-
15.0-
14.0-
13.0-
12.0^
_ 11.0-
CL
9; 10.0 H
O 9.0-
h-
H 8.0 -
O
O
6.0-
5.0-
4.0-
3.0-
2.0-
1.0-
0.0
FIELD
DATA
AVERAGE
RANGE
DATE: 7/9 - 7/12 . 1973
PARAMETER(S): DISSOLVED OXYGEN
NOTES: MODEL VERIFICATION
FLOW-l64.2cfs (RIVER MILE
-55.0) FIELD DATA
MODEL PREDICTION
o
33
m
GJ
46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82
RIVER MILE
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LITTLE PATUXENT RIVER - FREE FLOWING SECTION
17.0-1
16.0-
15.0-
14.0 -
13.0-
12.0-
11.0-
Q.
Q. 10.0 -
O 9.0-
8.0 H
UJ
O
O
7.0-
6.0-
5.0-
4.0-
3.0-
2.0-
1.0 H
0.0
DATE: 6/7. 1973
PARAMETER(S): DISSOLVED OXYGEN
NOTES: NONPQDMODEL CALIBRATION
FLOW-223.3 cfs
8 9 10
RIVER MILE
II
FIELD DATA
MODEL PREDICTION
TO
12 13 14 15 16 17 18
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LITTLE PATUXENT RIVER - FREE FLOWING SECTION
17.0-
16.0-
I5JO-
14.0-
13.0-
12.0-
11.0-
10.0-
9.0-
2
UJ
O
o
8.O
7.0-
6.0-
5.0-
4.0-
3.0
2.0-
1.0-
0.0
DATE: 7/9. 1973
PARAMETER(S): DISSOLVED OXYGEN
NOTES! NONPQD MODEL VERIFICATION
FLOW- 126.1cf*
FIELD DATA
MODEL PREDICTION
o
TO
m
tn
6
8 9 10
RIVER MILE
II 12 13 14 15 16 17 18
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LITTLE PATUXENT RIVER - FREE FLOWING SECTION
17.0 n
16.0-
15.0-
14.0-
13.0-
12.0-
11.0-
Q.
Q- 10.0^
O 9.0-
z
UJ
O
O
8.0-
6.0-
5.0-
4.0-
3.0-
2.0-
1.0-
0.0
DATE: 7/10. 1973
PARAMETER(S): DISSOLVED OXYGEN
NOTES: NONPQD MODEL VERIFICATION
FLOW-117.5 cfs (RIVER MILE-
-0.0) FIELD DATA
8 9 10
RIVER MILE
MODEL PREDICTION
12 13 14 15 16 17 18
m
9
-------
LITTLE PATUXENT RIVER - FREE FLOWING SECTION
17.0-
16.0-
15.0-
14.0-
13.0-
12.0-
1 1.0
10.0
O 9.0^
z
UJ
O
O
8.0
7.0
6.0-
5.0-
4.0-
3.0
2.0-
1.0-
0.0
DATE: 7/11 , 1973
PARAMETER(S): DISSOLVED OXYGEN
NOTES: NONPQD MODEL VERIFICATION
FLOW-134.1 cfs (RIVER MILE-
-0.0) FIELD DATA
MODEL PREDICTION
8 9 10 II 12 13 14 15 16 17 18
RIVER MILE
-------
LITTLE PATUXENT RIVER - FREE FLOWING SECTION
17.0
16.0-
15.0-
14.0 -
13.0-
12.0-
11.0-
Q_
Q- 10.0 H
O 9.0-
H
£E 8.0-
7.0-
6.0-
5.0-
4.0-
UJ
O
O
3.0-
2.0-
1.0-
0.0
DATE: 7/12. 1973
PARAMETER(S): DISSOLVED OXYGEN
NOTES: NONPQD MODEL VERIFICATION
FLOW-l42.3cfs (RIVER MILE-
-0.0) FIELD DATA
MODEL PREDICTION
O
oo
a 9 10
RIVER MILE
II 12 13 14 15 16
i
17
i
18
-------
PATUXENT ESTUARY - SALINITY PROFILES
DATE: 6/7. 1973
a.
a.
TIDE: HSW_*_MW LSW_*_UKN.
NOTES: MODEL CALIBRATION
20 22 24 26 28 30 32 34 36 38 40 42
O
30
m
«o
-------
PATUXENT ESTUARY - SALINITY PROFILES
DATE: 7/9.1973
TIDE: HSW_2L_MW LSW_$_UKN.
NOTES: FLOW 304.0 cfs
MODEL PREDICTION
8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42
RIVER MILE
O
5
-------
PATUXENT ESTUARY - SALINITY PROFILES
15-
14-
13-
12-
II -
10-
9-
Q.
S; 8-
\ 7"
6-
5-
4-
3-
2
I H
o
DATE: 7/10.1973
TIDE: HSW_X_MW LSW.
NOTES: FLOW 281.0 cfs
.UKN.
MODEL PREDICTION
o
73
8 10 12 14 16
18 20 22 24 26 28 30 32 34 36 38 40
RIVER MILE
-------
PATUXENT ESTUARY - SALINITY PROFILES
DATE: 7/11. 1973
Q.
CL
>
H
z
TIDE: HSW_X_MW LSW.
NOTES: FLOW 673.0 cfs
MODEL PREDICTION
8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
RIVER MILE
.UKN.
73
ro
-------
PATUXENT ESTUARY - SALINITY PROFILES
DATE: 7/12,1973
TIDE: HSW X MW LSW.
NOTES: FLOW 318.0 cfs
MODEL PREDICTION
10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
RIVER MILE
.UKN.
7)
m
OJ
-------
PATUXENT RIVER ESTUARY
12.0-
11.0-
10.0-
9.0-
8.0-
U_l _
O 5.0-
O
O
4.0-
3.0-
2.0-
1.0-
0.0
X X
DATE: 6/7. 1973
PARAMETER(S): DISSOLVED OXYGEN
NOTES: MODEL CALIBRATION
FLOW 535.0 cfs
X FIELD DATA AT HSW
23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55
RIVER MILE
TO
-------
PATUXENT RIVER ESTUARY
12.0 -i
11.0-
10.0-
9.0-
8.0-
7.0-
< 6.0-
cc
H
2
UJ
O 5.0 H
z
O
u
4.0 H
3.0-
2.0
1.0-
0.0
DATE: 7/12.1973
PARAMETER(S): DISSOLVED OXYGEN
NOTES: MODEL CALIBRATION
FLOW 318.0 cfs
X FIELD DATA AT HSW
o
JO
23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55
RIVER MILE
-------
PATUXENT RIVER ESTUARY
12.0-
1.0-
10.0-
9.0-
8.0-
- 7.0-
2
O
< 6.0-
cc
Y-
Z
O 5.0-
2
O
O
4.0 H
3.0-
2.0-
1.0-
0.0
DATE: 10/9,1973
PARAMETER(S): DISSOLVED OXYGEN
NOTES: MODEL VERIFICATION
FLOW 185.0 cfs
MODEL PREDICTION
LSW HSW X
23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55
RIVER MILE
TO
-------
PATUXENT RIVER ESTUARY
11.0-
10.0-
9.0-
8.0-
a
- 7.0H
< 6.O
oc
l-
z
Id
O 5.0-
z
O
u
4.0 H
3.0-
2.0-
1.0-
0.0
DATE: 10/10.1973
X
PARAMETER(S): DISSOLVED OXYGEN
NOTES: MODEL VERIFICATION
FLOW 183.0 cfs
MODEL PREDICTION
LSW HSW X
23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55
RIVER MILE
O
3)
m
-------
PATUXENT RIVER ESTUARY
12.0-
11.0-
10.0-
9.0-
8.0-
a
- 7.0-
< 6.0
-------
PATUXENT RIVER ESTUARY
12.0-1
11.0-
10.0-
9.0-
_ 8.0-
Q.
£ 7.0 H
z
g
< 6.0-
Z
O 5.0-
O
O
4.0 H
3.0-
2.0-
1.0-
0.0
DATE: 10/12.1973
PARAMETER(S): DISSOLVED OXYGEN
NOTES: MODEL VERIFICATION
FLOW 178.0 cfs
MODEL PREDICTION
LSW
23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55
RIVER MILE
O
(O
-------
APPENDIX - A -
PATUXENT RIVER BASIN MAP
AND
STATION DESCRIPTIONS
-------
PATUXENT RIVER BASIN
ADE NO.I STP
PATUXENT STP
IN MILES
-------
PATUXENT RIVER BASIN
SELECTED RIVER MILES
ROCKY GORGE\
RESERVOIR
MILE 16.6 U.S. ROUTE I
MILE l?.7 BALT - WASH PKWY
MILE 81.0 ROCKY GORGE DAM
MILE 75.0 BALT - WASH PKWY
MILE 60.5 ROUTE 50 BRIDGE
MILE 2.B ROUTE 424 BRIDGE
MILE 63.5 ROUTE 3 BRIDGE
.E 54.6 QUEEN ANNE BRIDGE ( JjL
MILE 47.4 ROUTE 4 BRIDGE
MILE 38.1 NOTTINGHAM
MILE 33.0 LOWER MARLBORO
MILE 26.0 PEPCO CANAL
MILE 22.2 BENEDICT BRIDGE
MILE 18.7 SHERIDAN POINT
MILE II.0 BROOMES ISLAN
MILE 0.0 DRUM POINT
IN MILES
-------
Patuxent Estuary Sampling Stations
Station No. Location River Mile
E23 Off Drum Point -- Buoy 5 0.0
E22 Sandy Point Buoy 8 1.8
E21 Point Patience -- Buoy 10 4.6
E20 Off Hooper Neck -- Buoy 12 6.5
E19 Off Rodney Point -- Buoy 14 8.7
E18 Broomes Island -- Buoy 16 11.4
E17 Off Jack Bay -- Buoy 18 15.2
E16 Off Prison Point -- Buoy 20 16.7
E15 Sheridan Point -- Buoy 21 18.7
E14A Long Point -- Buoy 22 20.8
El4 Benedict Bridge 22.2
EISA league Point -- Buoy 29 22.9
E13 Chalk Point -- Buoy 30 24.3
E12 Off PEPCO Intake Canal 26.0
E10A Deep Landing 28.0
E10 Overhead Power Cable 29.7
E9 Lower Marlboro 33.0
E8A Below Hall Creek 35.8
E8 Nottingham 38.1
E7 Lyons Creek Wharf 41.6
E6C Lower Jug Bay 43.1
E6A Middle Jug Bay 43.5
E6B Upper Jug Bay 43.9
-------
Station No.
Location
River Mile
E6
E5B
E5
E2
Station No.
1
9
9A
9B
10A
11
12
13
13A
13C
13D
14A
14B
14D
Mouth of Western Branch
Bristol Landing
Route 4 Bridge
Queen Anne Bridge
Patuxent River Sampling Stations
Location
Route 50 Bridge
Route 3 Bridge
Above confluence with
Little Patuxent
Below Bowie-Bel air S.T.P.
Above Bowie-Belair S.T.P.
Near Bowie Race Track
Penn Central R.R. Bridge
Patuxent Wildlife Center --
Duvall Bridge
Patuxent Wildlife Center
Patuxent Wildlife Center
Below Laurel - Parkway S.T.P.
Brock Bridge -- above Laurel -
Parkway S.T.P.
Below Maryland City S.T.P.
Above Maryland City S.T.P.
44.8
45.8
47.4
54.6
River Mile
60.5
63.5
63.7
64.2
64.8
66.4
68.5
71.5
72.6
73.7
74.6
75.5
77.5
77.7
-------
Little Patuxent River Sampling Stations
Station No. Location River Mile
LI Above confluence with Patuxent 0.2
River
L1A Below Patuxent S.T.P. 1.8
L2 Route *24 Bridge -- above 2.8
Patuxent S.T.P.
L3 Below Fort Meade S.T.P. #1 6.5
L2B Above Fort Meade S.T.P. #1 6.7
L5A Below Fort Meade S.T.P. #2 11.0
L5B Above Fort Meade S.T.P. #2 11.2
L6 Baltimore-Washington Parkway 12.7
L6A Dorsey Run before confluence 12.8
with Little Patuxent River
L7C Below Savage S.T.P. 15.5
L7D Above Savage S.T.P. 15.7
-------
APPENDIX - B -
STREAM DISCHARGE DATA
-------
PATUXENT RIVER BASIN
FLOW DATA (CRS)
DATE
6/4/73
6/5/73
6/0/73
Q/7/73
7/9/73
7/10/.3
7/11/73
7/12/73
10/9/73
10/10/7;
10/llA;
10/12/7;
Rocky Gorge
(Patuxent R.)
80.9
Gage Flow
144
194
158
175
25
25
25
25
Bait. Washington
Parkway
( Patuxent )
75.0
Gage Flow
3.64
3.58
3.39
1.92
1.88
1.90
1.86
230.0
216.0
180.0
40.0
38.0
39.0
37.0
Brock Rdg. Rd.
(Little Pa tux.)
15.3
Gage Flow
2.20
2.26
1.84
1.80
1.86
1.82
(106)
200.0
115.0
128.0
98.0
93.0
100.0
95.0
St. Rt. 424
(Little Patux.)
2.8
Gage Flow
1.44
2.20
1.55
1.65
1.16
1.10
1.20
1.24
186.0
315.0
204.0
221.0
123.0
111.0
131.0
139.0
Rt. 3 Bridge
( Patuxent )
63.5
Gage Flow
6.68
7.76
6.99
6.70
5.80
5.66
5.86
5.81
344.0
740.0
442.0
349.0
175.0
155.0
184.0
177.0
Rt. 50 Bridge
( Patuxent )
60.5
Gage Flow
5.74
7.55
6.27
5.89
4.75
4.44
4.74
4.57
4.04
4.01
3.97
-J735
411.0
785.0
494.0
434.0
228.0
182.0
226.0
200.0
136
134
131
129
Western
Branch
(Largo)
Flow
19.0
25.0
20.0
19.0
15.0
35.0
108.0
24.0
9.3 '
9.0
8.4 "
B.2"1'
-------
APPENDIX - C -
WASTEWATER TREATMENT PLANT DATA
-------
TREATMENT PLANT DATA
STREAM Patuxent
DATE 10/11 - 10/12 19 72
24 hr. COMPOSITE x GRAB
PLANT
(RIVER MILE)
Western Branch
45.0
Bowie-Belair
64.5
Laurel Parkway
74.5
Maryland City
77.5
FLOW
mgd
5.1
1.7
3.8.
0.9
,
BOD
5
4.4
21.9
28.3
8.3
TKN
mg/1
14.08
27.97
22.41
30.74
NH3
mg/1
13.80
21.00
16.00
24.00
N02+N03
mg/1
4.35
2.10
0.17
1.28
TOC
mg/1
25.01
26.62
33.81
18.15
TC
mg/1
35.53
50.30
56.91
59.38
TP
mg/1
0.73
35.4
28.10
30.6
Pi
mg/1
0.34
34.3
23.80
28.7
-------
TREATMENT PLANT DATA
STREAM Little Patuxent
DATE 10/11 - 10/12
24 hr. COMPOSITE _x_
19 7P
GRAB
PLANT
(RIVER MILE)
Patuxent
2.0
Fort Meade #1
i
6.5
Fort Meade #2
11.0
!
Md. House of
Corr.-Dorsey
Run.
12.8
| Savage
i -i c r
15.5
1
FLO'v
rr.gd
2.3
1.7
1.4
0.4
2.9
BOD
5
47.60
29.0
21.1
25.4
25.0
TKN
mg/1
23.21
17.06
17.36
16.46
10.71
NH~
mg/1
17.00
14. 9C
15.85
15.30
10. 2C
N09+N0.
mg/1
0.06
2.85
2.40
0.28
4.55
TOC
mg/1
35.61
25.24
25.93
26.44
22.37
TC
mg/1
58.38
46.37
43.71
61.19
40.25
TP
mg/1
29.10
23.10
34.9
13.40
20.0
Pi
mg/1
27.30
20.38
14.32
12.70
17.56
-------
TREATMENT PLANT DATA
STREAM Patuxent
DATE 6/5 - 6/6
1973
24 hr. COMPOSITE X GRAB
PLANT
(RIVER MILE)
Western Branch
45.0
Bowie - Bel air
64.5
Laurel Parkway
74.5
Maryland City
77.5
FLOW
rcgd
5.4
2.5
5.4
0/6
BOD
2
62.2
8.6
2.2
0.6
3
77.6
19.6
6.6
3.6
5
89.8
19.2
7
111.0
22.6
0.6
11
136.8
29.8
3.8
2.6
15
143.4
37.4
18.0
7.0
21
148.8
73.0
16.4
24.0
TKN
mg/1
13.9
35.58
29.18
13.64
NH
mg/1
8.45
29.0
27.0
9.0
NO+NO
mg/1
1.9
0.08
0.26
1.55
TOC
mg/1.
38.95
23.63
45.72
11.84
TC
mg/1
61.76
54.23
73.95
38.95
TP
mg/1
25.26
33.91
67.86
46.68
Pi
mg/1
34.50
7.10
-------
TREATMENT PLANT DATA
STREAM Little Patuxent
DATE 6/5 - 6/6
19
73
24 hr. COMPOSITE x GRAB
PLANT
(RIVER MILE)
Patuxent
2.0
Fort Meade #1
6.5
Fort Meade #2
11.0
>
Md. House of
Corr. - Dorsey
Run
12.8
Savage
15.5
FLOW
mgd
2.8
2.1
1.8
0.7
4.4
BOD
2
11.6
11.2
6.6
15.6
10.8
3
18.4
20.4
4.8
23.6
16.2
5
30.6
24.0
1.8
32.0
27.4
7
27.6
32.6
0.8
36.8
28.4
11
32.6
55.4
4.6
50.2
73.4
15
39.6
90.0
5.2
67.0
73.0
21
76.0
124.0
8.4
121.6
99.4
TKN
mg/1
23.40
17.44
18.22
14.01
12.86
NH3
mg/1
16.80
13.35
14.70
10.95
10.25
N02+N03
mg/1
0.00
2.45
0.62
0.04
1.55
-
TOC
mg/1
20.90
18.65
25.94
26.53
9.91
TC
mg/1
49.37
39.57
47.76
54.95
38.94
TP
mg/1
11.34
36.49
26.59
12.81
40.61
Pi
mg/1
28.50
27.00
11.25
31.50
-------
TREATMENT PLANT DATA
STREAM Patuxent
DATE 7/10 - 7/11 1973
24 hr. COMPOSITE X GRAB
PLANT
(RIVER MILE)
Western Branch
45.0
Bowie - Bel air
64.5
Laurel Parkway
74.5
Maryland City
77.5
FLOH
mgd
5.2
2.1
5.1
0.7
BOD
5
2.20
29.80
28.04
20.68
TKN
mg/1
12.02
26.31
21.52
17.23
NH,
mg/1
10. 5e
30.31
22.64
14.20
N0,+N0,
mg/1
1.94
0.12
0.16
.
3.47
TOC
mg/1
15.65
32.59
34.88
19.63
TC
mg/1
33.52
54.13
59.98
47.29
TP
mg/1
13.74
37.38
21.92
38.39
Pi
mg/1
11.14
35.22
20.84
'37.56
-------
TREATMENT PLANT DATA
STREAM Little Patuxent
DATE 7/10 - 7/11 19 73
24 hr. COMPOSITE X GRAB
PLANT
(RIVER MILE)
Patuxent
2.0
Fort Meade #1
6.5
Fort Meade #2
11.0
Md. House of
Corr. - Dorsey
Run
12.8
Savage
15.5
FLOW
mgd
2.6
2.4
1.6
1.3
3.9
BOD
5
14.28
25,32
4.60
6.40
20.62
TKN
mg/1
19.02
14.12
15.05
8.07
13.45
NH3
mg/1
18.80
13.01
14.04
5.39
11.78
N02+N03
mg/1
0.10
1.45
1.49
2.53
0.13
TOC
mg/1
20.01
24.34
22.59
14.43
18.23
TC
mg/1
41.29
45.58
38.55
29.22
42.17
TP
mg/1
23.84
21.42
21.22
19.40
11.73
Pi
mg/1
24.62
17.43
14.39
12.04
8.50
-------
APPENDIX - D -
WATER QUALITY SAMPLING DATA
-------
FAT'JXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E23
RIVER MILE o.O
Date-Tine
6A/73 1258
6/4/73 0605
6/5/73 1342
6/5/73 0650
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
25"
A0»
AVG.
SUR
25'
4n«
AVG.
SUR.
25'
40'
AVG.
SUR
25'
40'
AVG.
r"
Temp
°C
22.44
20.62
19. LL
20.12
19.64
17.94
22.77
20.7
20.34
20.70
20.54
19.90
Sa 1 i n .
ppt
8.57
8.86
9.9
8.98
8.56
8.65
9.67
8.84
8.8
9.04
9.34
8.95
7.90
8.68
9.08
8.46
Cond .
DO
ppm
BOD5
ppm
TOC
ppm
3.83
5.01
TKN
ppm
.510
.425
NH.-N
PPin
.195
.285
N0?-n\0,
ppm J
.170
.200
Pi
ppn
.002
.007
TP
ppm
.060
.081
Chlcr
a.
3.0
-------
FATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E23 RIVER MILE 0.0
Date-Time
6/6/73 1-418
6/6/73 0738
6/7/73 1502
.
6/7/73 0820
!
;
Tide
LSW
HSW
LSW
HSW
Depth
SUE.
25'
40'
AVG.
STIR
25'
4O'
AVG.
SUR.
P5'
40'
AVG.
SUR
25'
40'
AVT,
Temp
°C
22.1
19.8
18.58
21.34
20.40
19.9?
20.84
19 54
17.87
21 74
20.30
19.45
Salin.
ppt
8.76
q.i
9.75
9.09
8.52
8.80
9.0
8.68
9.1
9.45
10.55
9.58
8.82
9.20
9.64
9,11
Con.d.
DO
ppm
7.10
1
BOD5
ppm
i
TOC
ppm
5.58
i
TKN
ppm
.A66
.
NH,-N
PP»i
.280
NOg+NO,
ppm "
.155
Pi
ppm
.020
-
TP
PP-
.078
Chlor
o_
!
-------
PATUXENT RIVER/ESTUARY
STATION NO. E23
SAMPLING STATIONS
RIVER MILE o.O
Date-Time
7/9/73 1638
1
7/9/73 1028
7/10/73 1128
7/10/73 1725
Tide
LSW
HSW
HSW
ISW
Depth
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR
25
iO'
AVG.
SIJR
25
40'
AVG.
Temp
°C
29.31
27.03
26.23
27.24
26.54
26 1
28 3
27.08
26 52
?7 Q7
26.96
26.1
Sal in.
ppt
8.88
8.84
9.86
9.18
8.72
9.02
9.3
9.02
8.84
9.1
9 4
9.11
8 8
9.02
10.0
9.26
Cond.
15.93
15.42
16.8
15.3
15.5
15.94
15.7
15.84
16 2
15.57
15.66
16.9
DO
pp;71
10.50
8.30
8.57
in .14
BOD5
ppm
2.58
TOC
ppm
6.31 .
|
TKN
ppm
.420
NH,-N
PPfi
.262
N02+i\0,
ppm -
.002
Pi
ppm
.008
TP
ppn
.078
Chlor
a_
9.06
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E23 RIVER MILE 0.0
Dats-Tirr.e
7/11/73 1228
7/12/73 1320
t
i
i
Tide
HSW
HSW
Depth
SUE.
25'
40'
AVG.
JSIIR
25'
40'
AVG.
Temp
°C
27.45
26.88
25.75
26.86
26.8
26.87
Salin.
ppt
9.1
9.38
10.4
9.62
8.95
9.04
9.44
9.14
Cond.
15.88
16.14
17.5
15.56
15.65
16.2
DO
ppm
7.73
7.04
BOD5
ppm
3.20
2.51
TOC
ppm
TKN
ppm
.555
.575
NH3-N
ppm
.407
.441
NOp+NO.,
Ppm
.001
.001
Pi
pprn
.016
.005
TP
pprn
.159
.137
Chi or
a
33.0
13.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E22 RIVER MILE 1.8
1
Date-Time
6/4/73 1305
6/4/73 0615
6/6/73 1427
6/6/73 0746
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
25'
40'
AVG.
SUE
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR
25'
40'
AVG.
Temp
°C
21.86
20.50
20.73
20.17
19.72
19.72
22.2
20.62
19.59
21 25
20. 7£
19.77
Sal in.
Ppt
8.56
8.9
9.04
8.68
8.60
8.70
8.. 90
8.60
8.83
9.0
9.3
8.89
8.80
8.80
9.23
8.78
Cond.
DO
ppm
6.47
BOD5
ppra
TOC
ppm
4.37
4.78
TKN
ppm
.450
.406
NH3-N
Ppni
.225
.270
N02+N0q
ppm w
.160
.135
Pi
ppm
.004
.010
TP
ppm
.066
.065
Chi or
a_
3.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E22 RIVER MILE 1.8
Date-Time
6/7/73 1510
6/7/73 0829
7/10/73 1734
^k
r
7/10/73 1135
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
Temp
°C
21.48
19.46
18.87
20.96
20.05
18.82
28.8
26.8
26.54
28.0
27.14
26.84
Sal in.
ppt
8.84
9.50
9.72
9.16
8.96
9.20
9.62
9.08
8.7
9.16
9.45
9.02
8.84
8.86
9.04
8.88
Cond.
15 56
15.78
16.25
15.65
15.38
15.68
DO
ppm
5.79
10.83
8.83
BOD5
ppm
1.90
3.48
TOC
ppm
4.50
TKN
ppm
.564
.590
NH--N
PPni
.120
N02+N0,
ppm -
.001
Pi
ppm
.010
.066
TP
ppm
.042
.328
Chi or
u
47.3
-------
rATJXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E22 RIVER MILE 1.8
1
Date-Time
7/12/73 1330
Tide
HSW
Depth
SUR.
25'
40'
AVG.
1
Temp
°C
26.8
26 76
26.73
Salin.
ppt
8.82
8.85
9.0
8.87
Cond.
15.38
15.38
15.58
1
DO
ppm
7.03
BCD5
PPm
3 02
-
TOC
ppm
TKN
ppm
.557
NH--N
ppiti
.i35
W02+i\!0,
ppm "
.001
Pi
ppm
.003
TP
Dr\»*i
[_.'!: i
.157
Chi or
o_
15.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION iiO. E21 RIVER MILE 4.6
Date-Tire
6 AA 3 1316
i
6/4/73 0621
6/5/73 1356
:
i
6/5/73 0703
!
i
i
i
i
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
25'
40'
90'
AVG.
SUR.
25'
40'
90'
AVG.
SUR.
25 «
40'
90'
AVG.
SUR.
25'
40'
90'
AVG.
Temp
°C
21.51
21.05
20.83
20. 2C
19.95
19. 7C
19. 6£
19.21
23.3
21.32
20 9£
20.16
21.76
20.36
20.13
19 .7C
Sal in.
ppt
8.37
8.73
8.76
9.14
8.54
8.60
8.76
8.85
9.16
8.63
8.3
8.8
8 95
9.38
8.64
8.28
8.9
9.0
9.22
8.64
Cond.
DO
ppm
BOD5
pprn°
TOC
ppm
/..30
4 Q3
i
TKM
ppm
./.35
4Oft
NH3-N
ppr.i
.195
lfi«>
N02+N0,
ppm u
.100
OfiO
Pi
ppn
.006
OT5
T?
ppm
.066
076
Chlor
a_
6.8
!
|
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E21 RIVER MILE 4.6
Date-Time
6/7/73 1520
6/7/73 0839
7/9/V3 1652
7/9/73 1044
i
Tide
LSW
HSW
LSW
HSW
Depth
sim.
25'
40'
90'
AVG.
SUR.
25'
40'
90'
AVG.
SUR.
25'
40'
90'
AVG.
SUE
25'
40'
90'
AVG.
Temo
°C
22.82
21 42
20.68
19.37
21.0
20.24
20.18
19.05
30.18
27.5
27.4
27.0
27 26
26.92
26.83
26.76
Sal in.
ppt
8.42
8.90
9.10
9.66
8.79
8.97
9.20
9.20
9.65
9.04
8.2
8.56
8.64
8.9
8.56
8.76
8.8
8.8
8.82
8.79
Cond.
15 0
15.04
15.11
15.5
15 24
15.2
15.2
15.32
DC
ppm
8 1O
12 95
5.54
BOD5
ppm
4.56
TOC
ppm
5 11
7.16
TKN
ppm
555
.486
NH.-N
ppm
.416
N02+N0,
ppm ^
001
Pi
ppn
.015
018
TP
ppm
.068
.184
Chi or
a_
36.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E21 RIVER MILE
4.6
1
Date-Ti-e
7/11/73
>L
r
Tide
HSW
Depth
SUR.
25'
40'
90'
AVG.
Temp
°C
28.78
26.68
26.3
24.9
V.
Sal in.
ppt
8.2
9.12
9.38
11.32
9.44
Cond.
14.62
15.92
16.42
18.98
DO
ppm
9.42
BOD,
ppm3
3.25
TOC
ppm
TKN
ppm
.614
!
i
NH3-N
pp:fi
.447
N0?+N0.
Ppm
.001
Pi
ppr,
.023
TP
ppm
.172
Chi or
a
~~
15.0
-------
PATUXENT RIVER/ESTUARY SAMPLING 'STATIONS
STATION NO. £20 RIVER MILE 6.5
j
Cats-Time
6/6/73 1439
6/6/73 0800
i
i
i
!
7/10/73 1747
4
7/10/73 1U6
j
,
Tide
LSW
HSW
LSW
HSW
Depth
SUR
25'
Z.O'
AVG.
S1JR
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR
25'
40'
AVG.
Temp
°C
21.84
PI .11
20.86
20.86
20.16
20 20
30.05
26.86
26.76
29.6
27.24
26.93
Sal in.
ppt
8.14
ft. a
8.85
8.48
8.90
9.20
9.20
8.99
7.93
8.9
9.1
8.6
8.1
8.92
9.2
8.7
Cond.
14.52
15.44
15.7
14.9
15.56
15.92
DO
ppm
7.6"?
12.85
10.37
BOD5
ppm
1.52
TOC
ppm
6 16
TKN
ppm
423
.753
NH--N
PP'.i
.155
.129
N0?+N03
ppm w
.060
.410
Pi
ppn
.020
.183
TP
ppm
.069
.358
Chi or
a_
28.5
-------
PA7UXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E20 RIVER MILE
6.5
Date-Time
7/12/73 1345
l
i
i
Tide
HSW
Depth
SUR.
25'
40'
AVG.
Temp
=C
27.06
26.84
26.36
Salin.
PPt
8.37
8.53
9.6
8.79
Cond.
14.54
14.83
16.4
DO
ppm
6.73
BOD5
ppm
2.90
i
!
TOG
ppm
TKN
ppm
.566
NH,-N
ppm
.422
i
N02+N0,
ppm w
.001
Pi
opn
1
.008
TP
PP~-
.162
1
Chlor
a_
45J.O
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E19
RIVER MILE 8.7
Date-Time
6/5/73 1410
6/5/73 0720
7/9/73 1057
7/9A3 1706
Tide
LSW
HSW
HSW
LSW
Depth
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR.
25'
AVG.
SUR^
25'
40'
AVG.
Temp
°C
23.62
20.57
20.4
22.20
19.90
19.76
28.84
27.07
30.5
26.74
26.64
Sa 1 i n .
PPt
7.82
8.44
8.78
8.00
7.86
8.66
8.88
8.11
8.0
8.6
7.44
7.8
8.6
8.74
8.22
Cond.
14.34
15.0
14.5
14.95
15.13
DO
ppm
10.26
13.60
BOD5
PPm
TOC
ppm
L 78
TKN
ppm
358
NH.-N
ppm
135
N02+N03
ppni
O55
Pi
ppn
OOQ
TP
ppm
n66
Chlor
a_
-------
:-Y.::/.Ei-;7 RIVER/ESTUAP.Y SAMPLING STATIONS
ST.'-.TION NO. E19 RIVER MILE 8.7
D?.t3-Ti>=e
7/LL/73 1300
!
|
:
1
i
Tide
HSW
Deoth
SUR.
25'
40'
AVG.
Temp
Of»
^
28.0
26.6
25.2
Sal in.
ppt
7.8
9.16
8.78
8.43
Cond.
l/i.18
16.02
16.5
DO
ppm
8.36
EODg
ppiii
TOC
ppm
TKN
ppm
NH3-f!
ppiii
f-'O^-i-riO,
ppri "
Pi
Dp
TP
? ?~:
Chi or
c_
1
i
i
!
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E18 RIVER MILE 11.4
Date-Time
6/4/73 1334
6A/73 0645
6/5/73 1419
6/5/73 0730
Tide
LSW
HSW
LSW
HSW
Depth
SUR-
25'
40'
AVG
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
Temp
°C
23.94
19.98
20.18
21.50
19.63
19.23
24.34
20.26
20.28
22 85
20:i6
19.68
Salin.
PPt
7-5
8.34
8.4
7.78
7.60
8.32
8.54
7.82
7.24
8.32
8.36
7.66
7.51
8-38
8.52
7.81
Cond.
DO
ppm
BOD5
ppm
TOC
ppm
4-75
5.27
TKN
ppm
.398
.400
MH.-N
PPni
.145
.130
N0?+N0.
ppm "
040
.030
'
Pi
ppn
010
.011
TP
ppm
.049
.081
Chlor
a_
6.0
-------
~ATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E18
RIVER MILE 11.4
Date-Tine
6/7/73 1539
6/7/73 0858
7/9/73 1715
I
-V
!
7/9/73 1106
i
i
i
|
i
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
Temp
CC
24 48
20 5
20.13
23.50
20.45
20,10
31.3
27.21
26.77
28.33
26.65
26.5
Sal in.
ppt
7.6
8.32
8.6
7.84
7.76
8.45
8.66
7.96
7.6
8.16
8;6
7.87
7.7
8.55
8.7
8.09
Cond.
14.24
14.3
14.8
13.76
14.87
15.0
DO
pprn
7.89
11.73
8.78
30D5
ppm
1.9
3.60
TOC
ppm
3.88
6.25
TKN
ppm
.506
.370
NH.-N
ppni
.462
N02+N03
pprn
.001
Pi
pprn
.023
.012
TP
ppm
.038
.119
Chlor
a_
16.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO.E18 RIVER MILE 11.4
Date-Time
7/10/73 1802
7/10/73 1157
7/11/73 1310
7/12/73 1400
Tide
LSW
HSW
HSW
HSW
Depth
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
Temp
°C
31.17
26.78
26.6
29.88
27.18
27.27
28.08
26.65
26.52
26.7
26.51
26.22
Sal in.
ppt
7.3
8.5
8.7
7.91
7.5
8.45
8,62
7.95
7.41
8.58
9.22
8.09
7.9
8.14
9.83
8.22
Cond.
13.6
14.8
14.96
13.74
14.7
15.1
13.52
15.18
15.75
13.72
14.28
16.72
DO
ppm
14.09
12.85
8.15
6.95
BOD5
ppm
2.28
4.32
2.89
TOC
ppm
TKN
ppm
.753
.681
.539
NH3-N
ppm
.210
.528
.428
N02+N0,
ppm
.595
.001
.001
Pi
ppm
.349
-
.039
.014
TP
ppm
.476.
.240
.147
Chlor
a_
22.5
45.0
61.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. El? RIVER MILE 15.2
Date-Time
6/6/73 1501
6/6/73 0821
7/9/73 1116
7/9/73 1728
i
i
!
i
:
Tide
ISW
HSW
HSW
LSW
Depth
STIR.
PS1
40'
AVG.
SUR
25'
40'
AVG.
STIR
P«5«
/r»i
AVG
SUR.
25'
40'
AVG.
Temp
°C
P4 ft
PO 4
20.18
20.39
19.93
19.82
PQ P
PS ;,ft
Pfi Pfi
31.1
26.4
26.2
Sal in.
ppt
7 0
a 02
8.1
7.33
7.30
8.24
8.33
7.59
7 1
ft 5P
ft ft
7.92
7.1
8.54
8.7
7.81
Cond.
IT,"?
14 66
Ti.n6
13.23
U.7
14.94
DO
ppm
7.60
10T17
12.36
BOD5
ppm
TOC
ppm
5 \L
TKN
ppm
.^75
NH3-N
PP«i
.125
N09+N0,
ppn °
.001
Pi
ppn
.030
T?
ppm
.099
Chi or
a
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E17 RIVER MILE 15.2
Date-Time
7/11/73 1322
Tide
HSW
Depth
SUR.
25'
40'
AVG.
Temp
°C
28.1
26 61
26.4
-
Sal in.
ppt
7.29
8.5
8.61
7.88
Cond.
13.05
15.0
15.08
DO
ppm
7.19
BOD5
ppm
TOC
ppm
TKN
ppm
NH3-N
Ppm
N02+N00
ppm w
Pi
ppm
TP
ppm
Chlpr
a_
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E16 RIVER MILE 16.7
Date-Time
6/5/73 1433
6/5/73 0745
7/10/73 1818
^
7/10/73 1214
. . .
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR.
25'
AVG.
SUR.
25'
AVG.
Temp
or
\s
24.4
20.26
20.02
22.67
19.71
19.30
31.0
26.55
29.4
26.7
Sal in.
PPt
6.67
8.01
8.2
7.05
6.80
8.14
8.26
7.16
6.42
8.5
7.12
6.74
8.54
7.35
Cond.
DO
ppm
1
12.11
14.68
12.37
14.86
11.05
9.30
BOD5
pp.-
1.86
TOC
ppm
5.70
TKN
ppm
.442
.813
NH.-N
pp;Yi
.010
.261
N0?+i\03
ppm
.001
.552
Pi
ppn
.015
.333
TP
ppm
.157
.770
j
Chi or
a_
12.8
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E16 RIVER MILE 16.7
D-:.t2-Time
7/12/73 U20
Tide
HSW
Depth
SUR.
25'
AVG.
Temp
°C
26.65
26-38
-.-.
Sal in.
ppt
7.75
9-1
8.21
Cond.
13.43
15.7
DO
ppm
5.37
BOD5
ppm
2 79
TOC
ppm
TKN
ppm
513
NH--N
Ppm
361
">
N02+N03
ppm
.001
Pi
ppm
.018
TP
ppm
Chlor
a_
66.0
-------
FATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E15 RIVER MILE 18.7
Date-Time
6/4/73 1352
6/4/73 0701
6/6/73 1513
1
6/6/73 0832
i
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
20'
AVG.
SUR.
20'
AVG.
SUR.
20'
AVG.
SUR.
20'
AVG.
Temp
°C
23.88
20.78
21.66
19.76
2^.8
21.8
23.54
20.30
Sal in.
PPt
5.64
7.6
6.22
6.48
7.80
6.84
5.85
7.3
6.26
6.52
7.94
6.92
Cond.
DO
pprc
7.89
BOD5
ppm
TOC
ppm
5.69
6.76
TKN
ppm
.405
,*>LL
NH--N
ppm
.095
-095
NOp+NO.
ppni ~
.030
.001
Pi
ppn
.019
-060
T?
ppm
.182
.222
Chi or
a_
22.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E15 RIVER MILE 18.7
Date-Time
6/7/73 1557
6/7/73 0915
7/9/73 1742
-v
7/9/73 1129
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
20'
AVG.
SUR
?O'
AVfi.
SUR.
25'
AVG.
SUR.
25'
AVG.
Temp
°C
24.9
22.53
97 QQ
pp. in
v.
29.76
26.84
29.83
26.65
Sal in.
PPt
5.8
7.12
6.16
£> «>n
7.
fi,6Q
6.1
8.02
6.74
6.73
8.24
7.24
Cond.
11.24
14.01
12.43
14.3
DO
ppm
8.45
7.96
8.94
BOD5
ppm
3.12
TOC
ppm
5.97
5.84
TKN
ppm
.564
.428
NH3-N
ppm
.377
N02+N0,
ppm °
.001
Pi
ppm
.055
.030
TP
ppm
.157
.224
Chlor
a_
19.5
-
_i
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E15 RIVER MILE 18.7
Date-Time
7/11/73 1334
Tide
HSW
Depth
SUE.
20 «
AVG.
Temp
°C
28 43
26.77
-
Sal in.
PPt
6.51
8 52
7.19
Cond.
11.98
14 7
DO
ppm
7.81
BOD5
ppm
6.88
TOC
ppm
TKN
Ppm
.782
NH.-N
ppm
.435
N09+N0,
pfo
.001
Pi
ppm
.074
T?
ppn:
.432
l
!
Chi or
?.
103.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO.EUA RIVER MILE
20.8
Date-Time
6/5/73 1447
6/5/73 0755
7/10/73 1830
>
7/10/73 1230
Tide
LSW
BSW
LSW
HSW
Depth
SITR
25'
40'
AVG.
SUR.
25'
40'
AVG.
SUR.
25'
AVG.
SUR
25'
40'
AVG.
Temp
°C
?/. 5R
22.34
21.12
22.84
21.0
20.32
30.6£
27.34
3Q~4
27.2
27.1
Sal in.
PPt
y, QP
6.55
6.86
5.52
6.16
7.27
7.60
6.53
5.4
7.75
6.39
6 23
8.0
8.2
7.01
Cond.
10.13
13.63
11 5A
13.96
14.3
DO
ppm
9.55
8.56
BOD5
ppm
2.62
TOC
ppm
5.68
TKN
ppm
.500
.830
NH3-N
ppm
.050
.177
N02+N03
ppm
001
.766
Pi
ppm
.026
.333
TP
ppni
.318
. .748
Chlor
a_
31.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. EUA RIVER MILE 20.8
1
Date-Time
7/12/73 1432
Tide
HSW
Depth
SUR.
25"
AVG-
Teino
°C
26.7
26.44
Sal in.
ppt
6.82
8.0
7.32
Cond.
12.05
13 94
DO
pprr,
5.78
BOD5
pom
3.34
TOC
Pprc
TKM
pp:vi
.557
MH3-N
pp:-,i
.309
KOp+NO,
ppni ~
.001
Pi
ppn
.042
T?
ppni
.230
Chlcr
?
99.0
-------
FATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E14 RIVER MILE 22.2
Date-Tine
6/4A3 1406
6/4/73 0713
6/6/73 1524
6/6/73 0845
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
20'
AVG.
SIIR.
20'
Avr,
SUR.
20'
AVG.
SUR.
20'
AVG.
Temp
°C
25.45
23.57
PI ,9Q
21 07
26.0
25.04
24.0
20.3£
Salin.
ppt
4.3
4.82
4.48
5,74
6.92
6.19
4.2
4.77
4.40
5.76
6.0
5.80
i
Cond.
s
DO
ppm
7.92
BOD5
ppm
TOC
ppm
6.19
6.76
TKN
ppm
.465
.587
NH--N
PPfn
.060
.045
N02+N03
ppm
.040
.001
Pi
ppm
.023
.100
TP
ppm
.290
. .441
Chi or
a_
54.8
-------
rATUXEMT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. EU RIVER MILE 22.2
Q?.te-Ti^e
6/7/73 1610
6/7/73 0925
7/9/73 1752
-&
^
7/9/73 . 1U4
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
20'
AVG.
SUR.
20 f
AVG.
SUR.
25'
AVG.
29.0
15'
AVG.
Temo
13 C
26.58
25.22
24.10
23.90
31.08
30.1
6.1
28.42
Sal in.
ppt
4.12
4.6
4.28
5.83
6.10
5.88
4.6
5.0
4.78
11.1
6.35
6.21
Cond.
8.75
9.34
9.51
11.45
DO
ppm
9.07
8.14
BCD-
pprr,
3.19
2.94
TOC
ppm
7.07
6.7
TKN
ppm
.613
.428
NH--N
ppm
.194
KOp+NO,
ppm J
.001
Pi
pprn
.085
.054
TP
ppm
.280
.319
Chi or
a_
43.5
-------
PATUXEHT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E14 RIVER MILE
22.2
1
Date-Ti~,e
7/11/73 1348
>
10/9/73 0830
10/9/73 1458
10/10/73 0900
Tide
HSW
LSW
HSW
LSW
Depth
SUR.
20'
AVG.
SUR
20'
AVG.
SUR.
20 «
AVG.
SUR.
20'
AVG.
Temp
°C
28:.65
27.14
22.35
22.44
§i
22. 4C
22.35
22. 3C
22. OC
Sal in.
ppt
6.11
7.86
6.89
9.60
Cond.
11.16
13.8
14.55
10.20 15.00
10.20
10.80
9.40
9.60
16.24
17.10
14.80
15.36
DO
ppm
6.80
6.73
5.87
6.30
6.61
5.48
6.05
6.39
5.16
5.78
BOD5
ppm
3.00
2.27
3.55
TOC
ppm
6.00
6.91
TKN
ppm
.521
.495
.518
1
NH--N
PP«i
.349
.230
.240
N0?+N0,
ppm "
.001
.060
.025
Pi
ppm
.058
.155
.180
TP
ppm
.268
.300
.306
Chlor
a_
27.0
43.5
-------
FATUXEN7 RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E14 RIVER MILE 22.2
Date-Time
10/10/73 1435
10/11/73 0945
i
I
10/11/73 1510
10/12/73 1007
i
1
i
i
!
Tide
HSW
LSW
HSW
LSW
Depth
«JTTR
PfV
AVG
SIJB_
20'
AVG.
SUR.
20'
AVG.
SUR.
20'
AVG.
Tenp
°C '
>? ^4
PP PT
22.50
20.80
22.10
21.50
21.20
20.71
Salin.
PPt
10,7ft
11 ?O
9.10
9.05
10. 40
10.78
9.72
10.65
Cond.
17 rv,
17,PP
14.85
13.45
17.09
17.24
15.15
15.82
DO
ppm
6 RP
4.Q5
5.89
6.06
5.39
5.73
5.80
5.84
5.82
5.80
5.52
5.66
BOD5
ppm°
4.10
2.22
TOC
ppm
6.71
6.35
TKN
PPm
.627
.526
NH.-N
ppm
.150
.265
N02+NoJ
ppm J
.555
.030
Pi
ppm
.175
.190
T?
PP-
.620
.400
Chi or
a_
-------
PATUXE'NT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E13A RIVER MILE 22.9
Date-Time
6/5/73 0745
6/5/73 U40
i
!
i
i
7/10/73 1745
A
//TV
I V
1
7/10/73 1240
Tide
HSW
LSW
LSW
HSW
Depth
SUR.
10'
AVG.
SUR.
10'
AVG.
SUR.
SUR.
Teinp
°C
23 12
22.04
25.7
22.24
32.45
30.82
Sal in.
ppt
5 29
6.39
5.63
3.8
4.53
4.02
4.66
5.5
Cond.
8.75
10.52
DO
ppm
7.65
7.94
6.48
BOD5
ppm
5.76
TOC
ppm
6.50
TKN
ppm
.592
.667
NH.-M
ppffi
.065
.390
N02+iNO,
ppm u
.030
.001
Pi
ppm .
.024
.029
TP
Pprc
.349
. .798
Chlor
a_
96.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E13A RIVER MILE
22.9
, .
.Date-Tine
7/12/73 1432
<
Tide
HSW
Depth
Sal in.
Ppt
6 59
Ccnd.
11 n
DO
pp^i
5 rtft
BOD5
ppm
? ^i
TOC
ppm
TKN
ppm
51?
NH.-N
ppm
?ift
N02+N0,
ppm ~
om
.
Pi
ppm
051
T?
ppm
256
Chior
a_
58.5
-
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E13 RIVER MILE 24.3
Date-Time
6/6/73 1545
6/6/73 0850
7/9A3 1135
7/9/73 1800
Tide
LSW
HSW
HSW
LSW
Depth
SUR.
10'
AVG.
'
SUR.
10'
AVG.
STTH
sim.
Temp
°C
25.95
26. U
24.4
23.7
rt
32.Z.5
Salin.
PPt
2.8
3.44
3.08
4.25
5.35
4.74
/ 6
i.q
Cond.
« ?
7 .L
DO
ppm
8.50
Q Ql
7.Z.O
BOD5
ppm
TOC
ppm
7.11
TKN
ppm
.712
NH.-N
Ppm
.045
N02+N03
ppm
.105
Pi
ppm
.140
TP
ppm
.105
Chlor
a_
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E13 RIVER M!LE 24.3
Date-Time
7/11/7 1 T3A5
'/ -Li/ ' ^ ±.J*tS
10/10/73 0905
^
10/10A3 1455
10/12/73 1020
Tide
HSW
LSW
HSW
LSW
Depth
SUR
STTO
10«
AW,
SUR.
10'
AVG.
SUR.
10f
AVG.
Temp
°C
2Q 8
y\ fln
1O.50
21.88
21.80
20 80
20.98
Sal in.
ppt
* 1
a in
q.io
10. 3'.
10.7<
-
8.59
9.30
Cond.
Q -^
IP an
1Z 10
! 16.04
i 16.42
13.25
14.60
DO
PP^i
g 2"?
6.1ft
6.00
6.09
5.89
5.22
5.56
6.50
5.99
6.25
BOD5
ppm
1.^6
TOC
ppm
7.86
6.58
TKN
ppm
.502
.557
NK3-N
ppm
.180
.170
N02+N0,
ppm "
025
.020
Pi
ppn
.215
.160
TP
ppm
.379
.395
Chlor
a_
-------
7UXEN7 RIVE"/ESTUARY SAMPLING STATIONS
ATIOM NO. E12
RIVER MILE 26.0
Dr.te-Tr.ie
6/4/73 0720
6/4/73 1350
6/6/73 1550
6/6/73 0900
Tide
HSW
LSW
LSW
HSW
i
Depth
SUE.
10'
AVG.
SUR.
10'
AVG.
SUR.
10'
AVG.
SUR.
10'
AVG.
__^__
Tsmo
°C
23.00
22.17
25.85
24.85
25.25
25.15
26.4
24.45
Sal in.
ppt
2.75
4.77
3.48
1.5
2.4
1.82
1.56
1.8
1.63
3.95
4.5
4.11
Cond.
DO
ppm
7.78
7.38
BOD5
ppm
TOC
ppm
7.28
6.82
TKN
ppm
.630
'
.760
NH3-,N
ppn:
.070
.070
vn ^r.:p
:
' "
PP-
.321
.575
n-'ipv
W < ! . '- '
-\
'-L
22.5
. .... .
]
j
-------
P.: YEP./ESTUARY SAXFLINS STATIONS
r-T.-vnc:-; >;o. 212 P.IVZR MIL-
| TO --,p j 22 1 "; ^ .
-,-.;. -.-, -r-^r> ^nr.r'n, c:~ ' r.1T
J.. .-- : . . I _ ! i : .: _ | ^ i ! ~- . r ,J '-
1 i ;
6/7 /> 3 101 *> HSW i SUR.1 J>? 15 /J
10« ! PS 1 4.1
AVG ! ! A .05
! i
! 1
1 \ i 1
rt/7/71 ncun j HSW i SUR. 26.52! 4.0
10' 25.64! 3.90
1 AVG. i 3.92
i |
1 ., 'p -
! !
i 1 i
6/7/73 1^20 I.qw e!TrRi 9^. i "" .76
in« P5.16I 2.1A
: i
AVG. 1 1.Q5
!
; 1
|
7/9/73 1806 LSW SUR. 30.6 | 1.5
i
4 1 i
V i !
X !
; ' i
Cf" ^H
w i nJ
2.6
26.0
DO !
p?^ I
6 W \
i
j
i
|
i
I
i
1
!
1
5.27
30 D-
,__3
I-1!-'1"
l.QZ.
2.60
TOC
ppm
7.15
6.28
T /:.:
. i\ii
PpiTl
.75A
1
.725
i
r
i
.'in-, -r\
np-"?!
,r,,
.162
I
]
:\V/j~.\\^~
pp;:i c
"
.412
Pi
pp~
.090
.156
--, |
^i »^.-*i
-^ii.t
i
.313
i
1
.4^6
Chlcr !
i
i
j
:
i
!
1
'
i
i
;
22.5 j
i
.. i
i
J
-------
1.1/,!.1" 7.IVEP./ESTUARY SAMPLING STATIONS'
C-;-; >;:.
26.0
::.te-T-;~e
7/9/73 1150
7/10/73 1250
7/10/73 1755
7/11/73 1353
iide
:
HSW
HSW
LSW
HSW
'
SUR.
SUR.
SUR.
sira
;fp
12.8L.
32.76
32.05
31 £*>
Sa n n .
P?t
. 4 62
4.75
2.55
"
8.Q5
9.0
4.46
Q 4
OCT.
i
6,04
6.61
7.85
6 -17
BOD.
p nfl
TOG
ppm
TKN
ppm
«irv,
3
r i * * '
-
nni
-> i
corn
OftO
?i»
.
717
Cn:cr
'
T7 5
.. j
-------
., . _. .._ _,.,.., ! -~T::-, ri\/ C"\Y-->: "VI"1 C^ f.T ' O VC
.'.-. i > A" ii : :\i v I.'./ C.C i vie Tide Dsoth j CC ppt
i !
i i
: 7/12/73 LU3 HSW SUR. i 29.0 ! 4.26 17.85
i
I
i i
! - i i
: ' !
: ; !
i 10/9/73 084-4 ' LSW SUR. 22.80 5.80 10.03
: ! 10« 23.92 7.41 12.22
i j AVG.
: i ' i i
! i
! ~ I ; !
i i
1 . !
, 10/9/71 1512 HSW §yRt 24.40 9.15 J 1/..16
i
1 10' 21.70 8.80 14.70
i AVG. I
= I i i
i i i
10/11/731000 LSW ' SUR. ! 23.15: 6.85 i 11.56
! i j
10' ' 24.40! 8.25 12.75
AVG. j
i ! !
j i
I "' : i
! i
I . ! : 1
r\o
DC
PplTi
7.15
7.03
6.66
6.85
6.79
6.35
6.57
6.61
7.38
7.00
BOD.
?p:n°
!
i
t
ICC
ppm
22.72
6.26
i
1
TKN
n *^:"*i
}J Uflil
1.897
1
i
i
!
.533
i
1
.
NH,-N
P?M!
.160
.255
p. ~:--r> D-: ~? f^-^y
i < -w p . \ w > . 1 . 1 - . . '_ I
n -* , np^rv> -^r->i j
OVIi! |J.jl.l .y|^,.: ' .: |
: : i
i i
j
i
i !
i ' -
!
.020 .410 1.527 ! 510.0
i
! i
i
(' i
! :
i i
j
i - i
t ;
!
.045 i .210 .480
!
j
i ' i
|
1 ' I ;
i i ' .
-------
P.--'JXE;-;T P.: VE11./ESTUARY SAMPLING STATIONS
NO. E12
RIVER MILE
26.0
. '
j :.':= -'\~i~:'=
10/11/73 1525
i
i
:
; T G 5
HSW
.
3-2 pth
STIR
20'
AVG.
-
i
1 2:1':D
OP
'"
2^5Q_
21. QZ.
'
.
Sal -n.
PPt
9 20
8.70
_
Co P.O.
1L 60
Lt.10
DO
??^
7.11
6.53
6.82
CvlL/r
0
P.,..!"
TOC
ppir,
TV.
TKN
ppm
.
;N'H7-i\
PFa
I'lj^-nO-,
?6n J
?i
PP^
pp:-:
w ! . '^ f
,-*
'
.
1
i
i
1
!
1
I
I
- 1
..
-------
'ATUXHNT : I YE"/ESTUARY SAMPLING STATIONS
~TAT *'"; NO. E10A RIVZR MILE
28.0
Dite-Tir.s
6/5/73 0805
6/5/73 1450
7/10/73 1802
.-1
V^
7/10/73 1300
Tide
HSW
LSW
LSW
BSW
Depth
SUR
10'
AVG.
SUR.
10'
AVG.
sim
SUR.
T3":p
cc
23 94
2^.26
24.86
24.33
?n is
32.77
1
!
1
Sal In.
ppt
2.98
3.65
3.25
0.55
0.5
0.51
j__n
3.36
Ccnd.
? T>
6.65
DO
ppm
7.61
/ 7P
i
7.81
i
i
i
300,
ppin0
/ i/
"
i
i
!
1
!
i
TOC
ppm
6.12
1
1
TKN
PPSTI
617
6fY7
i
I
1
!
i
j
i
i-
NH3-N
P P:-i
FP"1
05O
/!/.
'
i
'
i
» !^ . "\
i\:J«T|XU^
P&» i
165
1
nni
i
?i j T? Chlcr
ppn | pc::; | ^_
; i
i
052 ' Z57
!
: 1
i
i 1
1
1
!
1
!
!
m^ .354 !fr7 s
|
i
i i
! ;
1 !
1 1
1
i I
i
-------
rj.YTJXEr;T RIVER/ESTUARY SAMPLING STATIONS
E1QA
RIVZR MILE 28.0
j:.t2-T"i:"(;?
7/12/73 1450
~l
v
\
10/10/73 0915
10/10/73 1505
10/12/73 1045
;T1ce
HSW
LSW
HSW
LSW
Dspth
SUR.
SUR.
10'
AVG.
SUR.
10'
AVG.
SUR.
10'
AVG.
Tsrco
°C '
29.3
21.80
22.00
22.34
22.92
20.45
20.05
Sal in.
ppt
2.54
4.50
5.30
6.90
8.40
3.^6
4.08
Ccnd.
4.42
7.60
8.75
10.98
12.80
5.25
6.34
no
U'wl
nr;rrj
^- /i 1 1
1
7.07
6.56
5.94
6.25
8.95
5.38
7.17 '
7.05
6.63
6.84
BOD.-
0
Owi-Ti
1.86
6.16
L.6&
TOC
ppm
11.59
3.Z2
TKN
ppm
.610
'
.725
.6^9
NH,-N
ppiii
.071
.075
.030
..w^w . ..
KOp-5-KO.
ppm w
.222
.025
.055
Pi
opr,
.092
.213
.170
TP
pp-
,411
518
510
Color
^
85.5
-
-------
5IVEn./ESTUARY SAMPLING STATIONS
;G. E10 RIVER MILE 29>7
I
I'l tG-T"i"':3
6/4/73 0745
6/4/73 1400
6/5/73 1505
6/7/73 1030
Tide
HSW
LSW
LSW
HSW
.
'
D2?th
SUR.
10'
AVG.
RIJP
1Q'
AVT.
SUR.
10'
AVG.
SUR.
10'
AVG.
TsiriO
°C
22.66
22.92
?4 4*
?? fi
25.2
25.
25.17
25.22
Sal in.
ppt
1.79
2.36
2.10
n pn
n PS
n,PP
0.08
0.07
0.06
1.77
1.95
1.87
Cond.
DO
ppm
7.63
7.16.
BCD,
n-v-°
p.-1"'
1
Tn/^
1 U^
ppm
6.5i
8.55
T:
-------
rjxEN RIVEVESTUARY SAXPLIKG STATIONS
ELO RIVER MILE
29.7
. " " O _ ; " "*"O
6/7/73 0950
6/7/73 1630
7/9/73 1820
! c
; ^
V
7/9/73 1200
;
Tic-
HSW
LSW
LSW
HSW
Depth
sim
10-
AVG.
SUR.
10'
AVG.
SUR.
SUR.
i ")
Tsir:D
oC
P6 *?fi
25.36
24.9
24.43
29.32
31.2
Saiin.
ppt
i in
1.74
1.63
0.32
0.26
0.27
0.2
1.31
Cord.
0.32
2.46
DO
op.
4.06
6.31
BOD-
n
PP*~
1.98
'
TOC
ppm
6.23
TKN
ppiTi
'
.7 00
?-;:-:3-,\
?pii!
.
.259
ri'O^'hNG*
pb J
1
.675
?i
PP.
.
.368
T> |ch1cr[
rsr-; i .'; 1
l- f^ " " " ," ^.* i
i
i
i
i
.722 128.5
j
|-
1
!
i
I
- 1
1 I
i
-------
.".-:TJXE?" RIVER/ESTUARY SAMPLING STATIONS
STATIC-:-; :<;:. EIO ' RIV:R MILE 29.7
!
Date-Tims
7/10/73 1305
7/10/73 1809
7/11/73 1405
^l
V^
7/12/73 1500
!
Tide
HSW
LSW
HSW
'
HSW
Depth
SUR.
SUR.
SUR.
sim
TSTip
Op
31.45
PQ.5-*
30.26
pft.q
Sal in.
ppt
1.66
0.1
1.55
1 27
Ccnd.
3.08
0.5
.
3.0
P 05
nr>
LJO
ppm
6.26
3.67
6.24
5 4Q
BOD.
PPro°
3.62
TOC
ppm
TKN
ppm
.639
NH.-N
pp3
.100
VP>, i^:^l
"^'SU3
P.-i
.308
D-'
'
ppm
.124
TN
;
^ »-t.N>
'. i i : i
.549
i
C:i"cr
.i
112.5
j
i
i
-------
E9
RY SAMPLING STATIONS
RIVER MILE
33.0
jr-ts-TrviS
6/4/73 0800
6/4/73 1410
6/5/73 0820
6/6/73 1610
Tic's
HSW
LSW
HSW
LSW
C-spth
SUR.
10 '
AVG.
SUR.
10'
AVG.
sin?
irv
AVT,
SUR.
10'
AVG.
Ts:"D
"C
22.74
22 77
24.55
24.35
21 71
p? 6ft
25.5
25.28
Sa Tin.
ppt
0.6
0.6/.
0.6l
0.1
0.15
0.11
n 54
nrsft
Q.55
0.0
0.0
0.0
Cond.
rsp
^v
ppm
6.9A
6 ftp
8.93
300,
-,-..,0
j^;j:;i
TOC
pprr,
6.35
7 5ft
Z 49
T;
-------
AlVER/ESTUASY SAMPLING STATIONS
;?.. E9 R1VZR MILE
33.0
D:»t<2-7-in;2
6/6/73 0920
6/7/73 1045
6/7A3 0958
6/7/73 1640
T-;d3
HSW
HSW
HSW
LSW
Ospth
SUR.
10'
AVG.
SUR.
10'
AVG.
SUR.
10'
AVG.
SUR.
10'
AVG.
Terco
°C
24.6
24.55
25,
25.
25.30
25.26
24.9Z.
24.96
Sal in.
ppt
0.6
0.63
0.61
.7
.7
0.69
.62
.70
0.66
0.16
0.14
0.14
Ccnd .
i
1
DO
DCTi
7.31
i
I
BOD5
pp;"
i
t
2.40
i
TOG
pprr,
7.07
1
T:
-------
vYTJXE.NT SIVEVESTuARY SAMPLING STATIONS
STATIC-;-; NO. E9
RIVER MILE
33.0
Date-T-;.-;2
7/9/73 1830
I '
^v
7/9/73 1210
7/10/73 1818
~\
\
7/10/73 1315
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
SUR.
SUR.
SUR.
Teno
°C
29.55
29.46
30.0
29.76
Sal in.
PPt
O 2
0.28
0.0
0.3
'
Ccnd.
n P5
0.61
0.15
0.5
DC
ppm
4 T?
5.Z2
4.46
3.76.
BOD,
ppin°
4.42
TOC
ppm
^ O15
TKN
ppm
6*0
m
.573
NH--N
ppiii
2B9
.170
NOp+NO.
ppm w
6^9
.001
Pi
ppm
392
_O2Q
Ti?
' '
-\ r\.^i
rV.:.
572
,2J?Q
^ 'r> 1 p V
s/ ! ! ' * .
r>
10 r»
?6.O
i
1
1
|
-------
?./ESTUA3Y SAMPLING STATIC-MS
" " '" "^ ". ' '"*
-., .:.f,_T.;-;o
7/11/73 1415
^ifx
7/12/73 1509
:
10/9/73 0915
10/9/73 1530
E9
7 ": C 0
i
HSW
HSW
LSW
HSW
-
SUR.
..
SUR.
SUR
10'
AVG.
SUR.
10
AVG.
: > j.
i o^-->
O f*
29.55
28.5
21.24
21.44
20.70
21.70
;IR MIL:
Sal In.
P?^
0.55
0.25
.50
.41
4.00
4.10
Cond.
0.8
0.35
1.12
1.20
6.52
6.88
.
33.0
DO
ppm
A 33
4.72
7.95
7.45
7.70
8.13
7.12
7.63
BODg
PP-"
2 36
1.60
2.35
i
1
TOC
ppm
8.23
PDiTI
630
.
.734
.770
ppni
274
.227
.030
1
ppm "
1AQ
-
.582
^LQ
?i TP ! C::"cr
P66 ! fi^n PP -5 '
i :
1 i
i i
i
.288 ! .777 30.8
i
: I
I
1 1
.190 J .455 J66.0
i i
1
i
i 1
1
j i
i -
i
-------
P.-'.T'JXEM 'IVER/ESTUARY SAMPLING STATIONS
:TAT::-'; SO. E9 SIVIR
33.0
:-:-.J:«-T->-,s
10/11/73 1025
10/11/73 1545
Tide-
LSW
HSW
Oepth
SUE.
10'
AVG.
SUR.
10'
AVG.
T^TIO
or-
21.05
19.70
2iT6n
21. 5A
.
Sal in.
ppt
1.25
.90
1.7ft
4.22
Cond.
1.83
1.94
6 ?fl
6.^2
DO
pp~
7.30
7.28
7.29
8,25
7.51
7 QO
f .00
BOD-
^n-5
lj }"'''
2.70
1
TOC
PPm
8.21
TKN
PPtt
.627
1 '
NH3-K
pp;ii
.140
\i\in~i\\Jf,
ppm ~
.n6s
Pi
pp~
.225
Tr
pp:'i
.520
'
Cli1cr
"~ i
1
i
-------
7.IVE3/ESTUARY SAMPLING STATIONS
~- ', V-/-V vn
E8A
RIVER MILE
35.8
1
f'- J-o_T-j (o
6/4/73 0815
6/4/73 1420
6/5/73
6/5/73 1520
Tide
HSW
LSW
HSW
LSW
Depth
SUR.
20'
AVG.
SUR
20'
AVG.
SUR.
20'
AVG.
SUR.
20'
AVG.
Teinp
°r
22.68
22.60
25 77
24.33
23.66
23.8
26.05
24.95
Sal in.
ppt
0.22
0.22
0.21
0.18
0.08
0.12
0.16
0.16
0.15
0.0
0.0
0.0
Cond.
1
DO
pprr,
6.30
6.75
BOD.
-,-,-0
jJk/:ii
i
!
j
;
I
1
TOG
ppm
6.65
6.68
TKN
ppiTi
.706
.671
1
NH--N
apiii
.130
"
.070
IvDp-r'xO^
ppm J
.845
.760
?i
pp~
.164
.146
r^
?p;v.
.552
.542
'
!
i
!
!
1
Color !
a
25.5 !
1
i
i
j
s
i
.
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. . E8A RIVER MILE
35.8
Date-Time
6/6/73 1620
6/6/73 0930
6/7/73 1055
6/7/73 . 1007
Tide
LSW
HSW
HSW
HSW
Depth
SUR.
20'
AVG.
SUR.
20 '
AVG.
SUR.
20'
AVG.
SUR.
20'
AVG.
Temp
°C
25.88
25.48
24.5
24.35
--.
24.95
24.93
25.3
25.3
Sal in.
ppt
0.08
0.08
0.07
0.07
0.06
0.06
.10
.10
0.09
Cond.
DO
ppm
8.74
7.83
BOD5
ppm
TOC
ppm
7.58
6.86
TKN
ppm
786
.950
NH3-N
ppm
oao
N02+N0.
ppm
7P*5
Pi
ppn
?nn
.158
TP
ppm
7CT7
.347
Chlor
a_
-------
PATUXENT RIVES/ESTUARY SAMPLING STATIONS
STATION NO. E8A RIVER MILE
35.8
Date-Tirr.G
6/7/73 1710
7/9/73 1840
1-
i
7/9/73 1225
7/10/73 1322
1
Tide
LSW
I£W
HSW
HSW
n o n * H
_/ w ..r i> 1 1
SUR.
20'
AVG.
SUR.
SUR.
SUR.
Temp
O.'-
o
25.46
25.1
29.75
29.0
29.85
Sal in.
ppt
0.07
0
0.03
0.09
0.1
0.0
Ccnd.
0.22
0.3
0.19
DO
ppm
4.88
3.67
3.87
30D5
ppn-,0
2.39
1.79
TOC
ppm
5.97
TKN
ppm
.650
NH--N
pp:n
.310
'JOg+NO.
ppm "
.584
Pi
ppn
.391
TP
ppm
.686
Chlor
a_
16.5
-------
:V,T:JXE:-;T SIVES/ESTUARY SA;-;PLI;-;G STATIONS
."vr::;v ?;D. ESA RIVER MILE
35.8
:-:.-=-T-'T:2
7/10/73 1830
7/11/73 1427
X
V
\
7/12/73 1517
10/10/73 0940
!T1d2
!
1
LSW
i
j
i
i
! HSW
HSW
_
Ififf
'
.
iDGOth
1 SUR
1
SUR.
SUR.
-
SUR.
20'
AVG.
T**
^ .*
\s
in o
29.0
27.55
20.80
20.70
Sc 1 1 n .
ppt
"
n
0.2
0.0
.40
.30
.
f* f\ vsyi
-*'-"
n
0.3
0.2
.66
.70
i
DO
pon
.
3.90
5.26
6.66
7.00
6.83
om
- ^/^ r-
PP.--3
1.68
'
1
.
TOC
pprn
9.00
i
i
im
ocm
.765
.
.709
r;H3-f\
PP'.i!
.330
.075
.">, j-r-.-^
..Wrt :.'^~.
P& -
.637
.
.460
^
r s
p_ prvi
* '
.345
"
.290
-- -*
v*
.709
.592
^ X 1 o V-
1
28.5
"
!
"
-------
E8A
35.8
10/10/73 1525 HSW I SUR. 21.23 1.80 ' 2.74 i 8.22
! 20' 21.00: 1.86 :' 3.06 ' 7.35 '
AVG. !
7.79
10/12/73 1103
LSW Sim- 19.68 .80 1.2Q
20' 19.42 .83 1.32
AVG. . ;
7.52
J 7.50
'8.23 .711
.115 .230 .630
-------
~ I'1")/ ~C~-' i 10V
i : :..<./ ._- i o'.--..\ '
:-"::-TC:- NO. v« RI/£S :"L:
J&O
; !
': \ Tsinp Sa'in.
r-:.t2-T1~2! T-;d2 -r2p";h ; "C ppt
6A/73 0830 HSW ! SUE. 22.76 0.15
! 20' 22.70| 0.10
AVG. 0.12
i
!
:
! i
6A/73 Lt35 LSW i SUE. 2-i.55 0.11
i 20' 24.06; 0.15
! AVG. 0.12
i
i i
! ;
; i 1
!
£>/*/7l np^o HSW 1 am?. ?3.^fl n T,
1 i
! pn« I PT fts n in
1
i AVR, n n
!
1 !
! i
6/5/73 1525 I£ff ! STIR. 26.75
i j
! 20' i 24.7
i !
! AVG.
i i !
i ! !
! ! i
Ccnd.
38.1
DO
ppn
6.47
A «Q
PP.n
fc/w r-
p?rr.°
'
TOC
ppm
6.96
5 #1
i
i
i
TKN
ppm
.728
708
".
:
I
Nn,-N
pp;^
1^5
095
1
'."> iV.«
:<_> r.-.-
pp:r, -
890
805
r^ I "' C^'O-
"pn ; pp.r. £._
i
179 ! 567 25 5
!
]
:
i
;
_
!
i£a noa
\
1 i
1
!
j
i
i ! i
- I j
! !
! 1 . '
-------
^TAT:;::' NO £8
\RY SAMPLING STA7:ONS
RIVER ''ILE38.1
^.~ T-^-T" T.r*
> -----
I 6/6/73 1630
:
!
!
6/6/73 0935
1
':
1
; 6/7/73 1105
:
. 6/7/73 1017
.
1 I
! 1 ;s;"o ! Sal in.
Tics hcpt'n 1 -C j ppt
LSW 1 SUR. ! 26.88 J 0.06
i I :
I 20« j 25.55! 0.1
i AVG. 1 i 0.07
i i i
! i !
HSW i SIJR ! P^M! n 1
1 i 1 "
! 20' ! 2Z..5 ! O.na
AVG. i i o.nft
i j
! :
' ' !
i ! i
HSW SUR. | 24.9 \
| 20' 1 25. ! .08
AVG. ' 1 0.04
i ! i
i ! !
i !
HSW SUR. i 25.32' .05
1 :
1 20« ! 25.3 : .03
AVG. ! : 0.03
i ; 1
i 1 :
i i !
Ccnd. i CO
; -^ PMT,
i *"'"
'I
1 Q.ft/
1
I
i
i
j
i
!
i
i
i
i
i
i 7.89
p
j'
s
!
i
1
BCD,
pST,a
'
1
i
i
!
i
i
i
i
i
TCC
ppm
6 «/
1
6.41
i
!
j
i
i
t
i
TKN
r^ ^vi
po:i!
7ft<^
.937
"< M
\\r\^-i\
n r\"\
fj^, i
(X^O
1
]
'"> ^:-O
*'-"} 11'- 7
^ ;"ro *~
ry..i
71*5
^ _
pen
335
170
~?
.-?":
678
348
.
1
Ch icr i
i
i
-\
1
;
i
1
;
i
j
i
i
,
i
-------
-."T'J.XEXT RIYES/ESTJASY SAMPLING STATIONS
.',0,
E8
38.1
: [I r. 1 2 - T 1 ~ 2
6/7/73 1720
7/9/73 1850
i
<
h
!
7/9A3 1235
i
7/10/73 1835
.
(
v
\
1 _ I
: : -. /-, o
,----
LSW
LSW
HSW
LSW
n .0 "IT >;
SUR.
20-
AVG.
SUE.
SUE.
.
SUR.
TG!r=D
0 :-
25.
2^.7
28.7
_
29.55
29.13
Salln.
-.r»7-
i>:-"-
0
0
0.0
0.19
.
-
0.11
0.0
Ccnd.
0.2
0.23
0.2
r
00
-*."»*₯
KK'"
?
4. -40
/t.36
4.66
30Dr
0
pp:r- i
1.32
'
3.50
TCC
PP-
6.35
T i/ ;»
I ixi*
pern
.634
.496
KH.-N
^
n**»''i
V ^ I - 1
.374
.387
/> . -,:^
.-.Jp-h-j^
?P- "
.628
.001
. . _. ^
Pi T? Ch^cr
"*i T1"1 : *^ «« * J
j ** i '. . .-' .
1
i
1
i
!
i
i
.395 j .719 9.0
j
i 1
i
1
i
.036 j.208 37.5
i
i
!
!
! i
!
-------
~ """ """"" "* ",' V "*. 1
:':.t2-T-'r.s
7/10/73 1330
V/ll/73 1435
7/12/73 1525
10/9/73 0940
:s
Tide
HSW
HSW
HSW
LSW
.
-.~-i-o
,**
SUR.
SUR.
_ . ..
SUR.
SUR.
20'
AVG.
RIVER MILE 38a
T.?~D Sslln.iccnd. \ DO J30D,
°C ppt j porr. jpprr.3
30.0 i 0.0 i 0.1 4.90 j
1 !
!
i ! !
! I
i
29.55 0.2 J0.3 5.30 ! 2.47
i i
i : !
! ' '<
. i 1
j
1
; i
!
27.35 0.0 0.19 5.85 11.78
i
i i
!
! 1
i
20.66 ' i .20 6.14 i
20.20; .42 .68 6.11 1
i 6.13 !
: I 1
I
TOC
!
!9.58
i
t
j
t
1
i
TKN
pprn
82*
.780
.853
1
1
1
KH,-N '
P1Q
"
.25?
i .185
i
i
i
SRT
SAP
.690
?-;
:
117
?7Q
i.280
i
~r ! Chlor i
P?""1 i '^ j
1 1
i
i
!
i
1 1
fi«ift ! 9«5 «;
i
! :
i i
1
! i
: i
. £Q/ 99 «>
i |
i i
i i
1
|
.528 ! 31.5
' i
I
i !
i
:
1 '
-------
- . .^ ^ ^. ._,...-..
J.iiJ ^ : r\ >. JL'JAb
5 /7I.:.-: NO. «» Kivcrs ;^ilL
1 . .
: pp-~; sri ! : r>
j I ^- ! . f* \» -*...!
-.-io.--;r.? iT'cs Dcoth °C cst
! ' ! ' '
10/9/73 1550 HSW SUR. I 21.20! .60
20' ! 21.2^1 .60
AVG.
i1
i
' \ _ . '.
! 1
10/11A3 1040 ! LSW 1 SUR. ,' 20.45! 0.00
20' 20.65 0.00
AVG.
1
; i
1
10/11/7 3 1^00 HSW pira Pi , 44 .52
?O' ?1 Qg QO
AVG.
i I
t
i
' ! i
; !
!
!
j :
i
: !
; ! !
Ccnd.
.82
.96
.45
.45
1 14
1 20
JV.L
ss.- :
L> Lfi.l :
i
8.28
8.43
8.36
7.85
5.97
6.91
8.^6
8.60
8.53
vr-.r\
--"5
pp:r.
TGC
P?i71
8.72
.
TKN
pcm
.808
NH.-N
PP^
040
s
..^ ,-.r,
..J?-i-..,7
P5n -
.275
.
.
F^;
p. nrv:
.-.
270
T"^
717
Cn "'?<" i
i
:
i
!
!
i
-------
SIVE^/ESTUARY SAMPLING STATIONS
E-7
RIV^R MILE
41.6
."- ~.o_ J-' ;"0
6/4/73 0845
6/4/73 1445
6/5/73 0900
6/5/73 1535
T-:GS
HSW
LSW
HSW
'
LSW
i i ;
TeTip j Sal in.
Depth "C i ppt
: 22.6!
i
i
i
! i
I !
26.55
i
i
i
1
!
i ;
SUR. 23.65 0.07
20 23.65 0.08
i
!
!
i
SUR. 25 j
L
;
!
i
i
!
Ccnd.
i
rvo
-'Vj
ppm
5.68
5,77
i
i
i
i
BODr
ppm°
1
:
TCC
PF-m
5.82
'
4.54
i
j
i
T: ~\-~
.-!"'
.245
.246
7? ! r '-" nv
i "* - ' ;
.652 j 15.8
i
i
i
t
i
i
!
i
- j
.626 !
i
!
;
i
i
I [
r
i t
r
i
i
-------
-7
/
RIVilR MILE 41.6
L ~ t'3-T"!"V2
6/6/73 1640
6/6/73 0945
6/7/73 1115
6/7/73 1735
j
Tide
LSW
.
HSU
HSW
.
LSW
Deoth
SUR.
in1
SUR.
Tar-o
°C '
25.01
9&.V
24.45
?5
24.5
Sal in.
ppt
i
-
Ccnd.
rci
uy
DP:TI
6.17
6.43
30D.
PP!"°
1.89
TCC
ppm
5.69
5.97
TKN
PP'71
.967
_
1.020
NH.-N
PP^
.420
i\'9o + riQ~
ppm =
1.165
Pi
ppr,
.715
.315
_
n
"
PP.'".
1.142
.344
r '' r\ v
w i : '
1
1
1
1
.
.
-------
v.7':/:;-;: AIYER/ESTU.'-.P.Y SA;-;FLI
"-.;..-_-
7/9/73
: 7/9/73
. 7/10/7
-' E-7
r.\*
1240
1900
3 1845
7/10/73 1340
T:do
HSW
LSW
LSW
HSW
-«^^j.-
SUR.
'-,'£ S : A~
A I
Tsno
28.46
ICKS
./ERI-IILE 41.6
SQ! 1 n . Ccnd .
opt
0.09
I
,
SUR.
SUR.
28.52
29.55
r\o i
0.26 4.42 i
! i
! i
BODr
i
! i
i
0.15 0.2 j 6.74
!
i
0.0 0.2
1
1
SUR.
29.75
6.47
TOP
: V w
T:
-------
.v.TJXENT RIVE?/ESTUARY SAMPLING STATIONS
RIVER MILE 41.6
i
j
j-:.te-Ti;"e
7/11/73 1445
7/12/73 1535
v[
>-
\
'
Tide
HSW
HSW
.
Depth
SUR.
SUR.
TeiTio
°C
28.72
27.25
Sal in.
pot
0.2
0.0
-
Ccnd.
0.3
0.25
DO
ocrr,
'
6.12
6.37
EODg
ppin°
2.31
f
1
|
TOC
ppm
1
!
!
'
TKN
ppm
.
'
.875
1
NrL~rt
pp;:i
.231
;o^-5-rio..
pfe "
.808
Pi
??n
.232
'
*- -^
pp:r;
.658
.
r '.-i " « /*
w . . L. .
r-t
55.5
i 1
1
!
-------
E-7
STUARY SA;--;?LI;-;G STATIONS
P.IVERKILE 41.6
! ! Tsrr
: :^-;«-~-:::2 Tide pept'n j °C
I 10/9/73 0955 LSW SUR. | 19.
! 10 i 19.
i AVG. !
!
i
: 10/9/73 1610 HSW| SUR. j 20.
1 18 ! 20.
! AVG. i
i
I !
i
: 10/10/73 1000 LSW SUR. | 19.
: 10 20.
: . AVG. i
i
i |
\ 10/10/73 1547 HSW SUR. 20.
; 10 19.
! AVG. j
' i
? j Sal i n . Cord .
; -~ »> !
| l'"'^
24 i
08 1
i
1
1 i
30 j
30 i
!
!
i
i
20j 0.00 .20
10 .10 .20
!
|
!
i
70 i
80 i
i
!
1
i
DC |
!-:J'" |
5.82
5.71
5.77
1
i
6.43
6.27
6.35
5.37
5.35
5.36
7.03
6.92
6.98
,
BODg
ppm
2.49
TCC
ppm
8.22
8.02
i
.
1
TKN
ppm
.861
1
.853
.
.230
.200
*%*Q2
.875
.745
1
?i T- j Cnlcr
"""" i
.380 .655 : 42.0
i
i
i
i
i i
i
; 1
j
i
.405 .722
j
i !
i
i
i
i
-------
:--.\TL:XEM RIVER/ESTUARY SAMPLING STATIONS
MO. E-?
RIVER MILE 41>6
""- rn_T"i :"'.o
10/11/73 1050
: 10/11/73 1611
10/12/73 . 1121
.
Tics
LSW
HSU
LSW
Depth
SUR.
10
AVG.
SUR.
30
AVG.
SUR.
20
AVG.
_______
Teno
°C '
19.39
18.55
19.14
20.55
19.07
18.68
Sal in.
ppt
0.00
0.00
0.00
0.00
0.00
.32
Cond.
.25
3.20
.62
.52
.28
.25
no
L/U
ppm
5.70
5.49
5.60
7.07
6.98
7.02
6.04
6.18
6.11
80D5
ppi-
3.22
TOC
ppm
6.93
8.18
TKN
ppm
.871
'
.757
NH3-N
pp;;i
.150
.070
KO-TNO.
PN *
.840
.645
D-i j ~2 r :,-.-,./.
ppn ; pp:- 1
.425 .870
j
I
1 i 1
1
i i
I
|
.320 .700
i
i
:
!
i i
i ;
i
i
i
i
i
i i
-------
FATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-6C RIVER MILE
43.1
Date-Time
6/4/73 0900
6/4/73 1455
i
Tide
HSU
LSW
Depth
Temp
°C
22.6
25.62
Sal in.
PPt
Cond.
DO
ppm
5.81
30Dr
ppm3
TOC
ppm
5.73
TKN
ppm
.833
NH.-N
ppm
.295
NOp+NO.
ppm
.995
Pi
ppm
.322
TP
ppm
.702
Chlor
a_
16.5
-
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-6A
RIVER MILE 43.5
Date-Time
6/4/73 0910
6/5/73 0910
6/6/73 0950
6/7/73 1125
Tide
HSU
HSU
HSU
HSU
Depth
SUR.
Temp
°C
22.7
23.72
24.25
24.4
Sal in.
ppt
Cond.
DO
ppm
5.61
5.66
5.57
5.89
BOD5
ppm
1.93
TOC
ppm
4.94
5.89
4.62
5.94
TKN
ppm
.900
:983
.967
.987
NH3-N
PPin
.340
.305
.375
N02+N0,
ppm °
.995
.960
.975
Pi
ppm
.339
.353
.530
.465
TP
ppm
.725
.756
.860
.708
Chlor
a_
17.3
-------
PATl'XENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-6A RIVER MILE
43.5
Date-Tims
7/9/73 1907
-f
7/11/73 1452
1-
i
i
Tide
LSW
HSW
n."5r>-'l
.» *~ ft U 1 1
SUR.
SUR.
Temp
op
28.03
29.0
Sal in,
ppt
0.03
0.16
Cond.
0.25
0.25
DO
ppm
6.91
5.81
BOD5
ppm
2.40
TOC
ppm
5.22
TKN
ppm
.881
.824
NH3-N
PFi
.410
.232
N0?+N03
ppm
1.079
..813
Pi
ppm
.648
.300
TP
ppni
1.079
.709
Chlor
a_
13.5^
28.5
-.
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION .NO. E-6A RIVER MILE
43.5
Date-Time
10/9/73 1010
10/9/73 1623
10/10/73 1005
10/10/73 1600
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
SUR.
5
AVG.
SUR.
SUR.
Temp
°C
18.52
20.50
20.30
V
19.60
20.20
Salin.
PPt
.16
Cond.
.20
DO
ppm
4.98
6.07
6.07
6.07
4.41
6.35
BOD5
ppm .
2.42
TOC
ppm
6.27
5.29
TKN
ppm
1.173
1.028
NH--N
PPin
.360
.355
N02+N03
ppm
1.315
1.250
Pi
ppm
.815
.875
-
TP
ppm
1.313
1.228
Chi or
a_
25.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-6A RIVER MILE
43.5
Date-Time
10/11/73 1100
10/11/73 1623
10/12/73 1131
i
Tide
LSW
HSW
LSW
Depth
SUR.
SUR.
5
AVG.
SUR.
Temp
°C
17.90
18.92
20.28
17.88
Sal in.
ppt
0.00
0.00
0.00
0.00
Cond.
.32
.38
.38
.46
DO
ppm
3.86
6.41
6,62
6.52
5.01
BOD5
ppm
1.84
TOC
ppm
6.61
7.19
TKN
ppm
1.067
.866
NH3-N
ppm
.310
.170
N02+i\0,
ppm ~
1.270
1 .055
Pi
ppm
.810
.5QR
TP
ppm
1.245
i fiRn
Chi or
a_
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-6B
RIVER MILE 43.9
Date-Time
6/4/73 1000
6/6/73 1000
Tide
HSW
HSW
Depth
Temp
°C
22.58
23.95
Salin.
PPt
i
Cone!.
DO
pom
5.38
5.69
BOD5
ppm
TOC
ppm
6.80
5.37
TKN
ppm
.908
.993
NH3-N
ppm
.406
.445
N0?+N0q
ppm w
1.115
1.130
Pi
ppm
.478
.645
TP
ppm
1.002
.995
Chi or
a_
11.3
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-6B RIVER MILE
43.9
Date-Time
7/10/73 1347
7/10/73 1855
7/12/73 1545
i
Tide
HSW
LSW
HSW
Depth
SUR.
SUR.
SUR.
Temp
°C
29.23
26.6
24.85
1
1
Salin.
ppt
0.0
0.0
0.0
Cond.
0.18
0.25
0.2
1
DO
ppm
6.23
5.43
5.96
BOD,
ppm3
TOC
ppm
TKN
ppm
NH--N
PPiii
N02+N0,
ppm °
Pi
P?m
TP
ppm
Chlor
s_
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-6 RIVER MILE 44.8
Date-Time
6/4/73 0925
6/5/73 0920
6/6/73 1005
6/7/73 1135
Tide
HSW
HSU
HSW
HSW
Depth
Temp
CC
22.18
22.75
23.1
23.4
Sal in.
Ppt
Cond.
DO
ppm
5.43
5.31
5.58
4.95
BOD5
PPro
1.91
TOC
ppm
4.50
4.61
3.76
6.55
TKN
ppm
.938
.958
.967
1.136
i
NH3-N
Ppm
.405
.375
.445
.490
NOp+NO.,
ppm w
1.250
1.125
1.215
1.130
Pi
ppn
.518
.577
.820
.635
TP
ppm
1.024
1.047
1.184
.927
Chlcr
a_
16.5
-------
3ATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-6
RIVER MILE 44!.8
Date-Time
7/9/73 1915
V
7/9/73 1255
7/10/73 1857
\
'\
7/10/73 1352
i
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°c J
23.35
27.0
'
25.6
27.78
Salin.
PPt ^
0.2
0.12
0.0
0.0
Cond .
0.25
0.22
0.3
0.13
DO y
ppm
6.23
5.76
5.88
6.02
BOD5
ppm-/
1.17
1.04
TOCV
ppm
6.61
TKN
ppm >/
1.885
1.540
NH3-N
ppiTl /
1.497
1.086
N02+N03
ppm/
.813
.676
Pi
PPm
1.274
1.323
TP
ppm
1.501
2.758
Chlor
1 w
25.5
7.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-6 RIVER MILE 44.8
Date-Time
7/11/73 1500
7/12/73 1548
Tide
HSW
HSW
Depth
SUR.
SUR.
Temp
°C
23.65
24.85
V-
Salin.
PPt
0.21
0.0
Cond.
0.18
0.2
DO
ppm
4.98
5.18
BOD5
ppm
4.34
2.25
TOC
ppm
TKN
ppm
1.118
1 .078
NH3-N
ppm
.591
.311
N0?+N0_
ppm w
1.018
1.406
Pi
ppm
.728
.703
TP
ppm
2.040
1.401
Chi or
a_
7.5
24.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-6 RIVER MILE
44.8
Date-Time
10/9/73 1028
10/9/73 1623
10/10/73 1015
10/10/73 1615
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
10
SUR.
20
SUR.
10
SUR.
10
Temp
°C
18.00
18.00
19.80
19.70
v.
17.90
17.30
19.84
19.50
Sal in.
ppt
0.00
0.00
Cond.
AVG.
AVG.
.18
.20
AVG.
AVG.
DO
ppm
4.72
4.91
4.81
5.83
5.78
5.80
3.85
3.80
3.82
6.37
6.83
6.6
BOD5
ppm
1.86
1.70
TOC
ppm
6.59
6.29
TKN
ppm
1.234
1.195
NH--N
ppm
.630
.490
N02+N0,
ppm J
1.710
1.285
Pi
ppm
1.517
1.200
TP
ppm
1.517
1.646
Chi or
£
6.0
:
1
-------
PATuXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-6 RIVER MILE 44.8
1
Date-Time
10/11/73 1111
10/11/73 1630
.
10/12/73 1140
j
i
1
Tide JQeptii
LSW
HSW
LSW
SUR.
SUR.
5
SUR.
Temp
°C
17.85
19.02
19.72
.-.
16.55
Sal in.
PPt
0.00
0.00
0.00
0.00
Cond.
.29
.30
.32
AVG.
.50
DO
ppm
5.32
6.29
6.38
6.3
4.59
30D5
ppm
1.35
1.93
TOC
ppm
6.01
6.89
TKN
ppm
1.075
NH,-N
ppm
.385
!
.873
.190
N02+N0,
ppm °
1.415
1.430
Pi
ppm
1.530
1.550
TP
ppm
1.900
1.550
Chlor
a_
-------
7ATUXENT RIVER/ESTUAP.Y SAMPLING STATIONS
STATION NO. E-5B RIVER MILE 45.8
Date-Tine
6/5/73 0925
6/6/73 1015
6/7/73 1140
;
i
Tide
HSU
HSW
HSW
Depth
Tercp
°i"
\s
22.18
21.9
22.9
Sal in.
ppt
Ccnd.
DO
ppm
5.45
4.59
i
i
i
T^n
OV^ Ji-
PpIT!3
!
i
!
TOG
ppn
4.61
6.62
i
TKN
ppm
1.017
1.194^
NH3-N
ppi:i
.385
'
i'lUrt^i'i'J-J
ppm
1.400
Pi
ppn
.810
.700
TP
?p;v.
1.196
.
.970
Chi or
5
i
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATIC;-; NO. E-BB RIVER MILE 45.8
D?.te-Tirce
7/9/73 1300
7/9/73 1922
7/10/73 1904
i
j
7/10/73 1356
i
Tide
HSW
LSW
LSW
HSW
Depth
SUR.
SUR.
SUR.
SUR.
Temp
*C
26.2
25.33
-
26.27
27.93
Sal in.
ppt
0.13
0.0
0.0
0.0
Cond.
0.25
0.18
0.3
0.13
DO
Pptf
4.92
5.89
5.96
6.31
BOD5
ppm
2.28
TOG
ppin
TKN
ppm
.856
NH.-N
ppni
.331
N02+N0,
ppm "
1.339
Pi
ppn
.699
TP
ppm
1.496
Chlor
a_
15.0
-
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-5B RIVER MILE 45.8
Date-Time
7/11/73 1506
7/12/73 1550
i
'
.
Tide
HSW
HSW
Depth
SUR.
SUR.
Temp
°C
26.48
24.25
Sal in.
ppt
0.25
0.0
.
Cond.
0.33
0.3
DO
ppm
6.43
5.26
SOD,
PP'T°
2.46
TOC
ppin
TKN
ppn
1.140
NH3-N
PPM
.525
N02+N0,
ppm "
1.395
Pi
ppn
.691
TF
ppm
1.318
Chlor
a
21.0
-------
PAT'JXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-5B RIVER MILE 45.8
D?.te-Ti^e
10/9/73 1040
10/9/73 1640
10/10/73 1025
1
10/10/73 1625
Tide
LSW
HSW
LSW
HSU
Depth
SUR.
10
AVG.
SUR.
AVG.
SUR.
10
AVG.
SUR.
10
AVG.
Terno
°C '
17.32
17.30
19.30
19.10
17.10
18.60
19.50
18.90
Sal in.
ppt
0.00
0.00
Cond.
2.20
.24
DO
pprn
5.34
5.10
5.22
5.80
5.39
5.59
4.20
4.43
4.32
5.33.
7.89
6.61
BOD5
ppm
1.82
TOC
ppm
6.74
5.51
TKN
ppm
1.402
1.251
NrL-N
ppm
.740
.565
N02+N0,
ppni
1.500
1.740
Pi
Ppm.
1.700
,
1.305
T?
ppm
1.700
.1.700
Chlor
Q_
27.0
-------
FAT'JXENT RIVER/ESTUARY SAMPLING STATIONS
STATIC:-; .NO. E-5B RIVER MILE 45.8
Date-Tine
10/11/73 1116
10/11/73 1635
10/12/73 1147
i
Tide
LSW
HSW
LSW
Depth
SUR.
10
AVG.
SUR.
10
AVG.
SUR.
20
AVG.
Temp
°C
18.96
16.52
18.36
19.38
17.03
16.50
Sal in.
ppt
0.00
0.00
0.00
0.00
0.00
0.00
Cond.
.24
.28
.34
.30
.37
.42
DO
ppm
5.16
4.52
4.84
5.85
5.82
5.84
4.24
4.20
4.22
BOD5
ppm
2.28
TO:
ppm
5.80
6.61
TKN
ppm
1.294
1.059
NH--N
ppm
.670
.415
NOpH-NO.
ppm ~
1.755
Pi
ppm
1.400
1.800
TP
ppm
2.250
1.800
Chlor
a_
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-5 RJVER MILE 47.4
Date-Time
6/4/73 0935
6/5/73 0930
6/6/73 1015
6/7/73 1145
Tide
HSW
HSW
HSW
Depth
Temp
°C
21.31
20.05
'
21.9
22.1
Sal in.
PPt
Cond.
DO
ppm
6,13
6.09
5.29
5.49
BOD5
ppn
1.61
TOC
ppm
6.48
3 4?
5.90
6.80
TKN
ppm
.773
833
1.019
.995
NH3-N
ppm
.285
?70
.375
.410
N02+N03
ppm
1.650
1 510
1.100
1.335
Pi
ppm
.800
qofi
.790
.760
TP
ppm
1.112
1 1Q4
1.169
1.006
Chlor
a_
11.3
-------
FATUXEKT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-5 RIVER MILE 47.4
Date-Tirce
7/9/73 1930
7/9/73 1310
7/10/73 1910
7/10/73 1402
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
SUR.
SUR.
SUR.
Tern
°C
26.04
25.65
25.4
27.55
Salin.
ppt
0.0
0.1
0.0
0.11
Cond.
0.2
0.21
0.18
0.13
DO
ppm
6.03
6.33
6.03
7.10
BOD,
ppm°
1.90
1.83
i
TOC
ppm
3.69
TKN
ppm
.807
.856
N'rL-N
pp;Tl
.405
.337
N0?+N03
ppm
1.635
1.454
Pi
ppn
1 .044
.806
TP
ppm
1.378
1.046
Chlcr
a_
4.5
6.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-5 RIVER MILE
47.4
Date-Time
10/9/73 .1047
10/9/73 1650
10/10/73 1035
10/10/73 1635
t
Tide
LSW
HSW
LSW
HSW
Depth
SUR.
10
AVG.
SUR.
10
AVG.
SUR.
10
AVG.
SUR.
10
AVG.
Temp
°C
17.40
16.40
18.50
18.10
..
17.50
17.20
18.54
18.00
Sal in.
ppt
0.00
0.00
Cond.
.20
.20
DO
PPm
5.83
6.03
5.93
4.56
4.72
4.64
5.04
5.10
5.07
4.60.
7.51
6.06
BOD5
ppm
2,34
TOC
ppm
5.7E
5.32
TKN
ppm
1.417
1.363
NH,-N
PPm
.815
.715
N02+N0,
ppm
1.500
1.400
Pi
ppm
2,117
2.123
TP
ppm
2,117
2.123
Chlpr
a^
3.0
-------
rATJXENT RIVER/ESTUARY SAMPLING STATIONS
STATIC;-: NO. -E-S RIVER MILE 47.4
1
Date -Tine
7/11/73 1511
7/12/73 1600
-
rice
HSW
HSW
Depth
SUR.
SUR.
Tsnio
- 1^
25.1
24.85
Sal in.
PPt
0.2
0.0
Ccnd.
0.25
0.25
DO
pp~
7.07
6.10
n f\r\
suD5
ppm
3.19
3.65
TOC
ppm
TKi'J
pprr,
.899
1.149
N.w-N
pp;ii
.365
.429
riOn'rl'J
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-5 RIVER MILE 47.4
Date-Time
10/11/73 1125
10/11/73 1645
10/12/73 1200
Tide
LSW
HSW
LSW
Depth
SUR.
10
AVG.
SUR.
15
AVG.
SUR.
20
AVG.
Temp
°C
18.00
16.69
18.40
17.68
-
16.30
17.70
Sal in.
PPt
0.00
0.00
0.00
0.00
0.00
0.00
Cond.
.35
.31
.28
.32
.25
.33
DO
ppm
5.24
6.46
5.85
4.62
4.74
4.68
5.10
5.09
5.10
30D5
ppm
1.98
TOC
ppm
5.93
6.31
TKN
ppm
1.380
1.244
NH--N
ppm
.755
.615
N02+K0,
ppm w
Pi
ppm
2.050
2.000
TP
ppm
2.550
2.550
_ . . _
Chlor
a_
-------
TATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-3 RIVER MILE 51.0
Date-Time
10/11/73 1105
10/12/73 1145
Tide
Depth
SUR.
SUR.
Tenp
°C
18.50
17.00
Sal in.
ppt
Cond.
DO
PP^
5.64
5.50
30D5
ppm
2.51
3.56
TOG
ppm
5.09
6.96
TKN
ppm
1.549
1.542
NH--N
ppm
.930
.915
|
NOp+NO.,
ppm J
Pi
ppn
3.350
2.900
T?
OPT,
3.440
3.425
Chlcr
a
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-2 RIVER MILE 54.6
Date-Time
6/4/73 1836
6/5/73 1848
6/6/73 1657
6/7/73 1700
Tide
Depth
Te:np
CC
20
22.5
-
23.0
Sal in.
ppt
Cond.
DO
ppm
7.04
6.05
6.39
6.46
BOD5
ppm
2.86
TOC
ppm
3.83
9.32
7.64
6.30
TKN
ppm
.863
1.233
1.127
1.194
NH,-N
PPin
.305
.280
.450
N02+N03
ppm
1.800
1.185
1.268
Pi
ppm
1.096
.732
.980
1.120
TP
pprc
1.571
1.653
1.582
1.537
Chlpr
a_
18.0
-------
P/YTJXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-2 RIVER MILE
54.6
Date-Time
7/9/73 1630
7/10/73 1500
7/11/73 1530
7/12/73
1
i
Tide
LSW
LSW
HSU
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°C
24.6
25.5
25
23
Sal in.
ppt
Cond.
DO
ppm
6.04
;
5.68
,
4.94
5.66
30D5
pp:n
2.75
TGC
ppm
5.11
TKN
prm
.897
1.164
1.269
1.238
NH3-N
Ppm
.933
.549
.543
,5 79
.
K02+N0,
ppni "
1.650
1.816
1.697
1.688
Pi
ppn
1.144
1.338
.968
1.206
T?
ppm
1.693
13.196
1.895
2.206
.
Chlor
a_
12.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 12 RIVER MILE
68.5
!
Date-Time
7/9/73 1340
7/10/73 1210'
7/11/73 1200
7/1.2/73 1130
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°C
24.4
24.5
23
21
Sal in.
ppt
Cond.
DO
ppm
5.41
4.29
7.13
4.22
BOD5
ppm
3.80
TOG
ppm
5.26
TKN
ppm
1.421
2J35
2.173
2.555
NH--N
ppm
.822
1.416
1.599
3.475
N02+N0,
ppm °
1.259
1.307
1.341
1.778
Pi
pprn
1.444
2.241
2.426
1.992
TP
ppm
1.834
2.886
2.869
2.047
Chlor
a_
1.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 13 RIVER MILE
71.5
Date-Time
6/4/73 1449
6/5/73 1454
6/6/73 1314
6/7/73 1300
Tide
Depth
Temp
°C
19
19.5
. 18
18.0
Salin.
PPt
Cond.
DO
ppm
8.02
7.09
7.84
7.79
-
BOD5
ppm
2.05
TOC
ppm
3.14
7.44
4.01
4.24
TKN
ppm
1.080
1.508
1.079
.987
NH3-N
ppm
.525
.705
.495
K0?+N0,
ppm °
1.485
1.065
1.155
Pi
pprn
.906
.832
.805
.920
TP
ppm
1.186
1.198
1.022
1.065
Chi or
L
5.3
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-l RIVER MILE
60.5
Date-Time
7/9/73 1540
7/10/73 1430
7/11/73 1430
7/12/73 1330
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°C
24.8
25.5
.
25
22.5
Sal in.
PPt
Cond.
DO
ppm
6.16
5.27
6.40
5.68
BOD5
ppm
3.04
TOC
ppm
4.35
TKN
ppm
1.079
1.232
1.353
1.520
NH3-N
PPm
.915
.646
.556
.924
N02+N03
ppm
1.650
1..776
1.798
1.779
Pi
ppn
1.469
1.533
1.761
1.532
T? '
ppm
1.996
1 .792
2.324
2.405
Chlor
a_
18.0
-------
PA7UXENT RIVER/ESTUARY SAMPLING STATIONS
STATIOM NO. 9 RIVER MILE 63.5
Date-Time
6/4/73 1710
6/5/73 1718
I
!
1
6/6/73 1533
!
6/7/73 1530
Tide
Depth
Tenp
°C
22
23
22.5
22.5
Sal in.
apt
Cond.
i
DO
ppm
7.16
6.56
6.83
6.76
BOD5
ppm
1
'
TOC
Ppm
4.04
9.17
5.63
5.23
TKN
ppm
1.227
1.208
1.295
1.260
i
NH3-M
ppm
.675
.355
.605
j
N02+N0,
ppni °
1.783
1.055
1.285
Pi
ppn
1.705
.924
1.260
1.485
Tp
ppn-,
2.055
1.487
1.654
1.731
Chi or
a_
6.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 9 RIVER MILE
63.5
Date-Time
7/9/73 1452
7/10/73 1345
1
7/11/73 1355
7/12/73 1245
Tide
Depth
SUR.
SUR.
SUR.
Temp
°C
26
26
24.5
22
Sal in.
ppt
Cond.
DO
ppm
6.09
5.40
5.53
6.18
BOD5
ppm
3.86
TOC
ppm
5.32
TKN
ppm
1.260
1.805
1.505
1.565
NH3-N
ppm
.896
1.118
.616
1.046
N02+N0,
ppni ~
1.770
1.713
1.785
1.706
Pi
ppm
1.560
2.066
1.941
1.788
TP
ppm
1.919
2.127
2.465
2.266
Chlor
a_
10.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 9-A ' RIVER MILE 63.7
Date-Time
6/4/73 1640
6/6/73 1513
6/7/73 1510
i
|
Tide
Depth
Terip
°C
20
21
.-.
21.0
Sal in.
ppt
Cond.
DO
ppm
7.37
6.97
6.66
BOD5
ppm
TOC
ppm
3.54
7.05
4.89
TKN
ppm
1.298
1.304
1.389
NH3-N
PPi'i
.675
.604
NOg+NoJ
ppm J
1.705
1.215
Pi
ppn
1.705
1.115
1.358
TP
ppm
2.055
1.190
1.610
Chi or
a_
10.5
-------
PATUX-ENT RIVER/ESTUARY SAMPLING STATIONS
STATION MO. 9-A ' RIVER MILE
63.7
Date-Time
7/9/73 1500
7/10/73 1400
7/11/73
.
7/12/73 1300
Tide
Depth
SUR.
SIIR.
SUR.
SUR.
Temp
°C
24.0
24.5
.-.
23.5
21.0
Sal in.
Ppt
Cond.
DO
ppm
5.98
5.18
5.76
5.41
BOD5
ppm
3.52
3.15
4.58
3.89
TOC
ppm
5.51
TKN
ppm
1.501
2.071
2.169
2.396
NH--N
Ppm
1.145
1.381
1.558
1.550
N02+N0,
ppm ^
1.168
1.773
1.099
1.815
Pi
ppm
1.686
"
2.466
2.444
.235
TP
ppm
2.452
2.639
3.212
3.061
Chi or
a_
6.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 10-A RIVER MILE
64.8
Date-Time
6/4/73 1605
6/6/73 1500
6/7/73 1440
Tide
Oepth
Temp
°C
22
21
20.0
Salin.
ppt
Cond.
DO
ppm
7.97
7.40
"
7.25
BOD5
ppm
.
TOC
ppm
6.58
6.95 .
6.11
-
TKN
ppm
4.275
2.745
2.106
NH3-N
PPm
6.050
2.800
N02+N07
ppm "
1.440
1.120
Pi
ppn
.420
2.230
TP
?pm
4.738
2.880
2.238
Chlcr
a_
9.0
-------
PATUXEiNT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 10-A RIVER MILE 64.8
Date- Time
7/9/73 1425
7/10/73 1320
7/11/73 1330
7/12/73 1215
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Temp
CC
24.0
24.5
.-
23
21
Sal in.
Ppt
Cond.
DO
ppm
6.70
5.80
5.13
5.78
BOD5
ppm
TOC
ppm
7.75
TKN
ppm
3.804
3.534
4.279
2.758
NK--N
PPm
.736
3.645
3.589
N02+N0,
ppm w
.995
1.616
.879
1.818
Pi
ppn
3.928
5.392
.286
TP
ppm
4.770
3.515
6.062
3.478
Chi or
a_
16.5
-------
PATUXENT RIVEP./ESTUARY SAMPLING STATIONS
STATION NO. 11 RIVER MILE 66.4
1
Date-Time
6/4/73 1530
6/5/73 1535
6/6/73 1423
6/7/73 1415
|
Tide
Depth
Temp
°C
19
21
'
19.5
20.0
Sal in.
ppt
Cond.
DO
ppm
7.97
6.47
7.46
7.37
BOD5
pprci
1.88
TOC
ppiTl
3.92
7.49
4.51
5.27
TKN
ppm
.750
.750
.906
.912
NH,-N
ppiii
.185
.155
.290
,
xo2+,\o3
pun ~
1.520
.805
1.175
Pi
ppn
.488
.335
.712
.720
TP
Ppm
1.106
.725
.850
.898
Chi or
a_
9.8
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 11 ' RIVER MILE
66.4
Date-Time
7/9/73 1400
7/10/73 1250
7/11/73 1230
7/12/73 1200
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°C
23.2
23.5
V-
23
21
Sal in.
ppt
Cora.
DO
ppm
6.03
5.40
6.91
5.20
BOD5
ppm
1.96
3.42
3.40
TOC
ppm
4.19
TKN
ppm
.897
1.155
1.379
1.198
NH3-N
Ppm
.421
.497
.693
.422
N02+N03
ppm w
1.124
1.172
1 .407
1.828
Pi
ppm
1.228
1.366
2.048
1.391
TP
ppm
1.459
4.924
2.324
1.391
Chlor
a_
6.0
-------
FATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 12 RIVER MILE 68.5
Da -' ^-Timo
C» \* . 1 1 1 . 1 w
6/4/73 1515
6/5/73 1520
6/6/73 1405
6/7/73 1345
1- -
Tide
Depth
Temp
°C '
19.5
21
..
20
20.0
Salin.
PPt
Cond.
DO
ppm
7.98
6.77
7.93
7.76
BOD5
ppm
1.28
TOC
ppm
2.67
7.39
4.59
3.80
TKN
ppm
.765
.833
.906
.837
NH,-N
ppm
.225
.260
.205
N02+N0.,
ppm °
1.425
.865
1.095
Pi
ppm
.674
.475
.525
.575
TP
ppm
.875
.868
.676
.708
Chi or
a_
7.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-2 RIVER MILE 54.6
Date-Time
10/9/73 1340
10/10/73 1400
10/11/73 1235
10/12/73 1120
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°C
19.50
20.00
17.00
Sal in.
ppt
Cond.
DO
ppm
6.12
6.35
6.12
6.15.
BOD5
ppm
3.16
2.70
3.54
2.85
TOO
ppm
5.67
5.18
5.82
5.68
TKN
ppm
1.802
1.610
1.780
1.569
NH3-N
ppiTi
1.115
-
.970
1.140
.925
N0?+N0.,
ppm w
1.575
1.700
Pi
ppn
3.217
3.003
3.700
3.050
TP
ppm
3.217
3.003
3.700
3.500
Chlpr
a_
1.5 '
-
-------
PAu'XENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. E-l RIVER MILE 60.
1
^2 t &-~\ iiy, -3
6/4/73 1823
6/5/73 1909
6/6/73 1634
.
6/7/73 1630
T-icie
Depth
Tario
CC
22
22.5
23
22.5
Sal in.
ppt
Ccnd.
DO
ppm
6.79
6.42
6.31
6.59
BOD,
ppr,3
TOC
ppiTi
3.57
:
8.35
6.71
5.23
T!/\l
! i\h
ppm
1.073
1.225
1.226
1.177
NH.-i!
pp:::
.510
.320
.550
f'.'Op+NO.,
pp-i
1.885
1.090
1.350
,
Pi
ppn
1.694
.893
1.305
1.440
7-
^ -^->^
,,;:,
1.977
1.582
1.792
1.738
Chi or
1
6.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO.' 13 RIVER MILE 71.5
Date-Time
7/9/73 1250
7/10/73 1115
7/11/73 1110
7/12/73 1045
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°C
23.0
23
\:
22.0
20.0
Sal in.
PPt
Cond.
DO
ppm
6.15
4.60
7.07
3.05
BOD5
ppm
5.26
TOC
ppm
5.05
TKN
ppm
1.317
3.157
2.396
3.200
"
NH.-N
ppm
.850
2.762
1.535
3.895
N02+N0,
ppm °
1.016
1 .620
1.716
1.519
Pi
ppm
1.453
2.192
3.168
TP
ppm
1.806
3.033
3.010
3.538
Chi or
a_
4,5 '
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 13-A RIVER MILE 72.6
Date-Time
6/4/73 1437
6/5/73 1424
I
6/6/73 1329
6/7/73 1310
Tide
Depth
Temp
°C
18
19
18
18.0
Salin.
PPt
Cond.
i
DO
ppm
7.97
7.33
8.08
8.16
BOD5
ppm
2.72
TOC
ppm
2.69
6.34
3.43
5.42
TKN
pp;n
1.350
1.683
1.373
1.252
NH3-N
ppifi
.835
.890
.855
N09+i\0,
pfri °
1.425
1.055
1.155
Pi
ppn
.516
.930
1.035
1.025
T?
pc;:i
i
1.436
1.347
1.215
1.138
Chi or
a_
5.3
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 13-A' RIVER MILE
72.6
Date-Time
7/9/73 1305
7/10/73 1130
7/11/73 1130
7/12/73. 1100
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°C
22.7
23.0
-.
23
19.5
Sal in.
PPt
Cond.
DO
ppm
5.58
4.81
8.56
5.32
BOD5
ppm
5.72
TOC
ppm
6.73
TKN
ppm
2.429
2.507
3.489
2.528
NH3-N
PPf"
2.217
1.933
2.436
3.341
N02+N03
ppm
1.481
1.465
1.389
1.422
Pi
ppm
2.762
2.516
3.324
2.179
TP
ppm
L3.706
4.628
3.819
2.564
Chlor
a_
3.0
-
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 13-C RIVER MILE
73.7
Date-Time
6/4/73 1427
i 6/5/73 1413
!
1
!
6/6/73 1338
6/7/73 1320
i
J
Tide
DO nth
->-f L;l
Ts;:ip
nr~
o
18
20
18
18.0
Sal in.
ppt
,
Cond .
DO
pprc
8.52
7.65
8.32
8.26
30D5
ppin0
2.45
TOC
ppun
3.41
7.26
4.12
5.94
TKN
ppm
1.545
1.850
1.658
1.310
NH3-M
ppiTi
.985
1.065
1.065
NOp+NO.,
ppm w
1.360
1.100
1.140
Pi
ppm
1.156
1.022
1 .050
1.170
TP
ppn i
1.422
1.411
1.280
1.259
C'nlor
o_
9.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 13-A RIVER MILE
72.6
Date-Time
7/9/73 1305
7/10/73 1130
7/11/73 1130
7/12/73. 1100
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°C
22.7
23.0
23
19.5
Sal in.
ppt
Cond.
DO
ppm
5.58
4.81
8.56
5.32
BOD5
ppm
5.72
TOC
ppm
6.73
TKN
ppm
2.429
2.507
3.489
2.528
NH3-M
Ppm
2.217
1.933
2.436
3.341
NOg+NO.
ppm "
1.481
1.465
1.389
1.422
Pi
ppm
2.762
2.516
3.324
2.179
TP
ppm
3.706
4.628
3.819
2.564
Chlpr
a_
3.0
-------
PATUXEHT RIVER/ESTUARY SAMPLING STATIO.NS
STATION NO. 13-C RIVER MILE
73.7
Date-Time
6/4/73 1427
6/5/73 1413
6/6/73 1338
6/7/73 1320
Tide
Depth
TS;:D
°C '
18
20
18
18.0
Sa 1 i n .
ppt
.
Cond.
DO
ppm
8.52
7.65
8.32
8.26
30D,
pp!71°
2.45
TOC
PP
3.41
7.26
4.12
5.94
TKM
ppm
1.545
1.850
1.658
1.310
NH--N
PPin
.985
1.065
1.065
N'Op+NO-
ppm
1.360
1.100
1.140
Pi
ppm
1.156
1.022
1.050
1.170
TP
ppm
1.422
1.411
1.280
1.259
Chlor
a_
9.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 13-C RIVER MILE 73.7
Date-Time
7/9/73 1315
7/10/73 1135
7/11/73 1120
7/12/73 1110
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°C
22.5
24.5
-.
22.5
20.5
Sal in.
ppt
Cond.
DO
ppm
5.96
5.28
9.26
6.06
BOD5
ppm
4.59
7.50
3.71
TOC
ppm
7.76
-
TKN
ppm
3.557
3.602
2.127
3.085
NH3-N
ppffi
2.993
3.185
1.550
3.742
N02+N03
ppm
1.271
1.269
1.516
1.250
Pi
ppm
3.569
1.887
2.724
TP
PPm
4.523
3.151
2.222
3.259
Chlpr
a_
3.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 13-D RIVER MILE 74.6
Date-Time
6/4/73 1345
6/5/73 1210
6/6/73 1120
6/7/73 1130
Tide
Depth
Temp
°C
21
19
22
18.0
Sal in.
ppt
Cond.
DO
ppm
8.43
7.45
8.49
8.11
30D5
ppm
1.26
TOC
ppm
7.71
10.97
4.08
8.05
TKN
ppm
3.000
4.525
1.144
2.280
NH.-N
ppm
2.550
3.650
;450
N02+N0,
ppni ~
1.240
.960
1.125
Pi
ppm
.177
2.329
.478
2.450
TP
ppm
2.132
3.264
.550
2.268
Chi or
o_
7.5
-------
PATUXEMT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 13-D RIVER MILE
74.6
Date-Time
7/9/73 1125
7/10/73 1035
7/11/73 1035
7/12/73 1015
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°C
22.5
24.0
22.5
19.5
Sal in.
ppt
Cond.
DO
ppm
6.76
6.03
7.27
6.02
BOD5
ppm
1.36
TOC
ppm
12.95
TKN
ppm
7.237
7.170
9.247
9.193
NH3-N
ppm
7.076
7.125
6.388
8.057
N02+N0,
ppm
.876
.768
.786
.684
Pi
ppm
2.063
7.799
8.719
TP
ppm
7.744
5.140
10.043
10.236
Chlor
a_
15.0
-------
r/YTUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 14-A RIVER MILE 75.5
Date-Time
6/4/73 1205
6/5/73 1232
6/6/73 1140
6/7/73 1200
Tide
Depth
Temp
°C
18
18
19
18
Sal in,
ppt
Cond.
DO
ppm
8.76
8.30
8.90
8.45
BOD5
ppm
TOC
ppm
4.62
5.84
2.84
3.58
TKN
ppm
.848
.792
.837
.738
NH--N
ppm
.185
.200
.200
N02+N03
ppm
1.310
1..175
1.455
Pi
ppn
.081
.124
.200
.065
TP
ppm
.290
.415
.227
.139
Chlor
a_
4.5
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 14-A RIVER MILE 75.5
Date-Time
7/9/73 1030
7/10/73 0955
7/11/73 1000
7/12/73 0940
Tide
Depth
SUR.
SUR.
SUR.
SIIR.
Temp
°C
?1.2
22.5
21.5
1Q.5
Salin.
ppt
Cord .
DO
ppm
7.01
6.59
6.66
7.37
BOD5
ppm
2.01
1.95
5.40
1.38
TOC
ppm
4.30
TKN
ppm
.832
.967
.975
.937
NH--N
ppffi
.360
.517
.228
.363
N0?+N03
ppm ~
1.077
1.023
1.039
.951
Pi
ppm
.337
.493
.054
.166
TP
ppm
.665
1.103
.317
.396
Chlpr
a_
6.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 14-B RIVER MILE 77.5
Date-Time
6/4/73 0950
6/5/73 1008
6/6/73 0933
6/7/73 . 0915
Tide
Depth
Temp
°C
11.5
17
.'
16
17.0
Sal in.
ppt
Cond.
DO
ppm
8.86
8.70
8,96
8.60
BODg
ppm
1.18
TOC
ppm
3.06
4.99
3.12
3.20
TKN
ppm
.713
.771
.777
.771
NH3-N
PPin
.215
.230
.235
N'O^iNO.,
ppm °
1.330
1.235
1.165
Pi
ppn
1.373
.205
.180
.092
TP
ppn
1.420
.360
.181
.110
Chi or
a_
6.0
i
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 14-B RIVER MILE 77.5
Date-Time
7/9/73 1005
7/10/73 0935
7/11/73 0940
7/12/73 0920
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Temp
°C
20.3
20
20
17.5
Sal in.
ppt
Cond.
DO
PPm
7.89
7.76
5.96
8.04
BOD5
ppm
TOC
ppm
5.11
TKN
ppm
1.194
K018
1.353
1.220
NH.-N
ppiTi
.647
.528
.725
.735
N02+N03
ppm
1.023
.996
1.017
.971
Pi
ppm
.552
.544
.131
.316
TP
ppm
.817
.788
.339
.502
Chlor
a_
3.0
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 14-D RIVER MILE 77.7
Date-Time
6/4/73 0940
6/5/73 0955
6/6/73 0921
6/7/73 0905
Tide
Depth
Temp
°C
17
18
-
17
17
Salin.
ppt
Cond .
DO
ppm
8.75
8.69
9.05
8.73
BOD5
ppm
1.40
TOC '
ppm
3.32
4.61
2.42
3.09
TKN
ppm
.518
.595
.725
.639
NH.-N
ppm
.095
.105
.115
NOg+NO^
ppm w
1.300
1.220
1.140
Pi
ppm
.035
.028
.043
TP
ppm
.177
1.220
.142
.083
Chlor
a_
4.5
-------
P/YPJXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. 14-D RIVER MILE 77.7
Date-Time
7/9/73 0940
7/10/73 0920
7/11/73 0930
7/12/73. 0915
Tide
Depth
SUR.
SUR.
SUR.
SUR.
TeniD
°C '
20.5
20.5
19.5
17.0
Sal in.
ppt
Cond.
DO
pptn
7.93
7.96
7.33
8.28
BOD5
ppm
1.22
1.11
1.98
1.05
TOC
ppm
4.61
TKN
ppm
.634
.744
.782
.796
NH--N
ppm
.240
.326
.198
.214
N02+N03
ppni
1.046
.985
1.019
1.035
Pi
ppm
.032
.149
.050
.018
TP
ppm
.129
.750
.179
.081
Chlor
a_
6.0
-------
L-l
!NG STATIONS
RIVZR i'ilLE
0.2
1
L. .
1 j:.t2- i ". "r : ! ":G£
; 6/5/73 1825;
1 !
! i
i i
1
;
! 6/6/73 1620
i
i
i
: i
: i
: i
i
;
6/7/73 1615 i
! i
! i
!
1
i i
j
1 i
i ' !
i
! i
: i
i
,
'2Dtn
'
T3!TiD
or
24
24
23
Sa". in.
ppt
Tono
u w i i *!
1
DO
3CT;
1
6.83
6.70
6.66
BOD-
^-..,°
1" ."* " "
'
2.96
1
TOC
ppm
8.35
6.75
5.21
TKN
f\ ^J*!
1" >U ' ' '
1.125
'
1.355
1.185
1
MH^-N
PP^'
.295
.565
i
i
vn j.\:,1
t\ */ tj I \ *t ^.
^ <-v,, -
1.280
1.395
?i
y,~';-!
.867
.
1.345
1.555
«-\ i-«.ti
1.611
1.929
1.838
Chlcr
.-;
1
i
i
(
-------
"ATJXE.M RIVER/ESTUARY SAMPLING STATIONS
STATIC;-; KG. |_-1 - RIVER MILE 0.2
]
i
Dcite-Ti-s
7/9/73 1445
7/10/73 1427
7/11/73 1430
7/12/73 1305
i
Tics
Depth
SUR.
SUR.
SUR.
SUR.
Tsrr.o
°C
26
25
24.5
23.0
Sal In.
ppt
Cond.
DO
p. cm
6.15
5.61
4.72
6.51
BOD5
ppin
3.48
2.87
3.74
3.00
TOC
pprn
4.71
TKN
ppin
1.251
'
1.600
1.387
1.441
NnVN
pp;i
.706
1.035
.771
.748
.\0,^ixO-
PP^i C
1.637
1.704
1.729
1.666
?i
ppn
1.560
2.030
1.737
TD
pp:v.
1.748
1.339
2.182
1.788
r ",* "i p y*
,^
3.0 '
!
1
-------
-AT:XE;;T IOR/ESTUARY SAMPLING STATIONS
rATICM MO. L-1A RIVER MILE 1.8
D-Lte-T-'se
6/4/73 1745
6/5/73 1735
6/6/73 1548
6/7/73 1545
lids
Depth
Tsmp
"C
24
24
'
23.5
23.0
-
Sal in.
ppt
COPQ .
DO
ppm
7.27
6.79
7.01
6.92
,
30D,
^.^
jjfj.n
2.60
I
T r\r*
iO'«
ppm
5.28
11.98
7.51
6.64
TKN
ppm
1.838
1.725
1.839
1.592
NH^-N
ppfn
1.140
.600
1.165
i
r* I* '
1.705
.1.290
1.350
opr,
'
2.505
1.159
p::".
2.497
1.847
2.052
1.865
C'-.lcrl
3.8 ]
I
-------
.V-.TJXENT RIVEVESTUARY SAMPLING STATIONS
STATIC;-; NO. 1-2 RIVER MILE 2.8
1
jz.t9-Ti~e
6/4/73 1800
6/5/73 1758
6/6/73 1601
6/7/73 1605
Tide
_
Depth
Temo
°C '
23
23
23.5
24.0
Sal in.
ppt
Cond.
DC
ppm
7.40
.
7.06
6.98
BOD,
ppm°
TOC
ppm
3.46
8.07
5.28
TKN
ppm
.833
1.114
.953
Nh'-N
ppm
.350
.320
"P. "'PI
ii'Jo^nU^
.ppr, =
1.860
1.405
Pi'
ppn
1.657
1.430
1.580
-*. .^
^ rx.-»i
;..V..,
1.886
1.814
1.720
i
r ',t ~. !\v
w i . */ i
-i
2.3
i
-------
?.IYE?./ESTUARY SAMPLING STATIONS
'Ij. L-2
RIVER MILE
2.8
ji-te-T-irs
7/9/73 1423
7/10/73 1400
7/11/73 1415
7/12/73 1252
.
T -i '-' r-
' *'>-
Depth
SUR.
SUR.
SUR.
SUR.
_
f o;yn
°c
27
26
25.5
23
Sal in.
ppt
Cond .
np
U'J
PP~i
6.47
i
6.35
5.48
7.03
,
BOD-
- -°
P.L-I.i
2.44
TOG
ppm
5.12
TKN
ppm
.848
1.052
1.034
1.052
NH,-N
ppm
.342
.534
.338
.311
v^, i*:n
li'J/5 l\'J^.
PP": "
1.611
1.564
1.599
1.625
*s
Y I
pp~
1.616
1.433
1.456
1.212
OC:"
1.661
2.502
1.738
1.212
T
r '.. " r*v
*S '. , ^ .
''. !
1
10.5 !
t
1
1
i
1
1
-------
/.-M'JXENT RIVER/ESTUARY SAMPLING STATIONS
L_3
RIVER MILE
6.5
:-:to-T-:.-=e
6/4/73 0741
6/5/73 0822
6/6/73 0817
6/7/73 0805
:
Tide
n.in-'-n
--.-«"
Tei-p
°C
19.5
21.0
21.0
22
22
Sal in.
ppt
Cord.
DO
n PT
r* r^ *
7.59
7.25
7.18
7.19
BOD-
pprc0
TCC
ppm
4.19
10.10
7.67
5.96
T:
-------
ST;:::?:: /::. L-S
6.5
" - ';.>_"" ".?.
! 7/9/73 0938
i
!
!
: 7/10/73 1008
; 7/11/73 0916
;
' 7/12/73 0920
1
:
1
- r« /-i
.
"^ o n " h
SUR.
SUR.
SUR.
SUR.
"
"sir.? jSQlir..
CC ";"-t
i :
25 !
i
|
i
!
25 !
j
!
i
24 j
!
!
i
i
1
21.51
i
1
i
I
1
Po*"^
w U 1 1 <
1
1
DO
-Cir;
7.02
6.67
5.80
7.03
*-0^
r,-.T.5
1.76
I
!
i
TGC
w win
5.31
i
T-/:>;
1 IN. 1
nr»n
ri
1.211
"
1.305
1.261
1.229
NH^-N
ppi-fi
.730
.751
.635
.510
v- i-.:r.
!i>//5 iV.,-.
cSn °
1.532
1.463
1.488
1.548
"^ -
1.704
1.674
1.725
1.372
T2 /~'"" .^v*
; "
^-^.-», i
.._ j
2.071 12.0 1
I
I
2.432 i !
\ i
! !
i
i ;
1
2.122
i
i
I
i
1
1.372
i
i
S 1
-------
;-ATj.X~;\T RIVER/ESTUARY SAMPLING STATIONS
"A7IG:-; NO. L-2B £IVER MILE
6.7
j-. tl2-"i""'"'i9
i
6/4/73 0821
6/5/73 0806
6/6/73 0806
6/7/73 0755
,
1
T "! 0 9
Osoth
Temp
°c
20
20.5
21.5
22
Sal in.
ppt
PnnH
\J \* I 1 wl
no
U'wl
DOT.
'
7.67
7.25
7.02
7.02
BOD5
PP!n
TOG
ppm
4.00
6.78
6.04
4.65
TKN
ppm
.675
.775
1.105
1.036
f!H3-N
ppffi
.260
.165
.302
vr>. iMO ' 2-' ' '"> " ">v
:> jp~i\'j^ . : : r - ! -
ppm wj op~ pp:r, .^
1.765 j 1.513J 1.626 3.0 ]
i
!
;
! ' i
! I
1.435 1.131 ! 1.748
i i i
iitl
i
I . i
i
'
1.525 1.405 1.688:
i
1
1
I |
i
i
i 1.526
i
1
i
! :
-------
- :-;- ~. 7 V-- /"xTI! \?V "/
::/":::, ;-:o. L-2B
ILE 6.7
'
\ 7/9/73 0910
i
!
: 7/10/73 0943
|
.
, 7/11/73 0900
,
i
!
i
7/12/73 0900
1
;
iica
r* ^ n. "T 'i.
SUR.
SUR.
SUR.
S1IR.
; etfp
or
"
24.5
25
24
-
91
SQ 1 1 n .
*^ »^ *
;,P,
Cond.
DO |
Dp~ |
6.67
.
i
6.48
.
7.37
6.88
3 CD-
fc" *" "* *^
pplTf
2.36
;
1
ICC
ppm
4.67
7 '/ M
i is!X
ppn
.790
.916
1.000
.928
I
1
i:-:3-N
pp;:i
.288
"
.410
.370
.275
NO^NC,.
ppn "
1.620
1
.1.528
1.582
1.639
Pi |T- j Z-:~cr
ppm j pp:" i r._
1.723J 1.900 9.0 ]
!
i
1 i
j i
i >
1.466! 2.442
:
_
j . 1
-i
1.581 2.102
1
j j
! !
1
1.232 1.232 i
\
\
1 1
I
-------
s. .';.-'_ :;:; ST;."IC:;S
L-5A
11.0
i pc.i
6/4/73 0913
19.5!
8.28
4.97 1.335 ' .805 ' 1.660! 1.965: 2.132 4.5 !
6/5/73 0916
21.0
7.90:
' 8.57 ! .983 .315 ' 1.445 i 1.035' 1.686
6/6/73 0850
21.5
7.53.
, 8.76 1.960 i 1.375; 1.415 , .415 3.724
6/7/73 0840
22
7.35 0.87 i 7.94 I 1.882
3.350 3.408
-------
L-5A
SAMPLING STATIONS
P.IVER KILE
11.0
LT^e-T-i-s
7/9/73 1020
7/10/73 1050
7/11/73 0955
7/12/73 0943
Tide
i jeiro
Depth | °C '
SUR. 25.0
i
i
!
i
SUR. 1 25.0
!
-i
i
!
|
SUR. ! 23.5
i
i
i
i
SUR. i 20.5
!
i
j
i
'Sal in.
pot
"
Co no.
DC
ppm
i
7.25
i
7.17
5.43
7.73
i
1
!
p.on_
0
i'V1"
.84
..
i
1
i
i
1
TOC
ppm
5.12
i
i
!
TKN
nr»7i
fj i-- 1 1 1
1.144
.
1.848
1.496
1 1 .485
i
NH--N
pp;;:
.637
1.182
.781
,
.687
i
1
KO?-H\oJ ?', \ TP | CMcr
c6;n "\ pprr, ! op::: I r-.
I . ._ .
1.632 | 2.063! 2.242 \ 4.5 !
! i
! i
! !
I < 1
i i '
! ! !
1.485 I 2.283 3.348 j
! i i i
! j
! i i
!
! ! ' "~\
\ i !
1.384 2.084 2.708 j
i
!
i 1
! !
1 i
1.439 1.414 1.590 1
! i
i : '
1
I
-------
".-\::c:. :;:. 1-5
'; :-;.te-7-:"2
6/4/73 0900
i
i
i 6/5/73 0904
6/6/73 0856
i
:
:
6/7/73 0840
:
1
!
i
B
Tics
.
~] .0 r» * >f\
J _ w or!
-
_
°c
19.5
20.5
"
21.5
?1 .5
v-K i-ii!.
Sa 1 1 n .
»-s -» 7"
i-:' L
1 11.
Co nd.
2
r-.r,
-'-'
DD~
8.17
7.91
7.57
7.48
SOD-
r h" " '
.
TOG
ppm
3.79
8.15
6.89
5.03
pp.171
.735
.767
1.205
.937
pp;Ti
.315
.110
.345
; i i !
?:jni "j P-3^ P^::; I :1
1.715 j .549 1.804 j 2.3 j
1 1
i
i ;
i
1 i i
1.480 i .604 1.173
1 i I
! i
;
1 i
i
1.443 i 1.663 2.206 !
! 1
i
i i
i i
i i
i '
I 1.350 1.774J
i !
i :
! i
i !
j
j
-------
R/ESTU^Y
SAMPLING STATIONS
r.vric:; ;\o. L-5
: j.-.-;«-7 'I1, s
i 7/9/73 1030
i
; 7/10/73 1040
'
'
:
i 7/11/73 1006
'
:
_
7/12/73 0953
.
;
.
i
;
B
Tide
P.i
!
I TO:",-",
-^iV. i o,-'"'"
SUR. i 25
i
!
i
!
SUR. j 25
1
i
i
j
1
SUR. i 23.5
i
1
1
i
I
i
i
SUR. 1 20.5
i
i
i
I
;
1
*:R MIL:
Ss"i 1 n .
»** r\ 4~
HP'-
: 11.2
Ccnd.
r.p i
POT.
7.30
i
!
7.32
4.52
7.87
;
1
BOD-
1.42
70C
pom
3.70
7KN
.741
.890
.950
-
.884
1
NH--N
1.345
"
.329
.297
.193
i
i
'?«, ^
1.479
1.397
1.391
1.506
.
Pi
1.722
1.499
1.761
1.093
%
1.731
1.694
2.021
1.093
,
C '". "::-
4.5
i
!
'
T
-------
VESTUA3Y SAMPLING STATIONS
L-6
12.7
}
i 6/4/73 1050
j
i
!
1
: 6/5/73 Till
!
:
. 6/6/73 1041
.
6/7/73 1045
Tide
~>j°D'th
| o:-,rj
c
21
22
22
21.5
Salln.
ppt
Ccr.d.
nf>
U'_f
OCTi
8.10
7.98
7.52
7.15
BOD.
PPm3
TOC
ppm
3.04
8.37
4.94
4.66
TKN
ppn
.758
.950
.881
1.152
!
i\h«-:\
PP:^
.200
.110
.205
KO?*iO,
pom w
1.625
.1.575
1.350
; !
Pi TP ; Cr.lcr
pprr, pp:: ; ?._
1.141 1.181 3.0 .
'.
i !
.665 1.248
j
: 1
1
!
i
1.370 1.448
i
1 .
!
i 1
.877 j
i
I
! ;
-------
:;-:^T AIVER/ESTUASY SAXPLINS STATIONS
no:-. :-;o. i_-e RIV-R;'
12.7
_ .
J >."<;- ! ~s '"-
7/9/73 1315
7/10/73 1158
7/11/73 1305
7/12/73 1117
i
T ~ n o
1 i _:
'
.
Teeth
SUR.
SUR.
SUR.
SUR.
Tei^D ' Sal in.
*C ' j ppt
26 !
i
i
I
1
!
» i
i
i
i
I
i
!
!
24 !
!
J
i '
!
i
i
!
21 i
i
i
i
!
i
!
i
i
i
Co no ..
DC
PPT. i
i
7.40
7.21
4.39
7.67
BO'Dr
?p:n°
1
1.58
1.46
TOG
ppm
3.95
T: j.-.:n
i>'^^ :\U^
Pfe ^
1.364
1.366
1.309
1.404
p,;
'
ppn
1.542
1.316
1.427
-
1.213
"~?
«^ KX.t-
:?
1.630
1.595
1.758
1.435
Chi or
"'. i
i
10.5 1
i
i
-
i
-------
PATUXENT RIVER/ESTUARY SAMPLING STATIONS
STATION NO. L-6A
RIVER MILE 12.8
Dc;te-Ti:ie
6/4/73 1137
6/5/73 1125
6/6/73 1034
6/7/73 1050
!
Tide
Depth
Temo
°C '
21
21
22
21.5
Sal in.
ppt
Ccnd.
"
DO
ppT,
7.94
7.65
7.18
7.62
BODg
»-» *^irt
i'!-:"
'
1.71
i
i
TOC
ppm
6.97
7.88
4.98
4.58
7 y w
.1 i\ii
ppm
.885
'
.825
1.165
.904
MM -N
. ifl-, :S
PP«
.410
.190
.475
1
'
V P :.: A r» : -» ^ :, " « -.^
AU^"i\u- ' i : - l '- '
c^ "= ppr, -:::
'
1.440 .582 1.148 4.5
1.065 .218 .605
1.020 .705 .993
i
.580 1.021
i
i i
1
-------
-,- I-/-V- .-» T \;-r; / rcT: '"> ny
-.-'.: o.\ci\ "" 1 V-1:./ ilc ! Un.A .
STATION NO. L-6A
i
7/9/73 1307
7/10/73 1250
7/11/73 1320
7/12/73 1108
'
Tids
i
Depth
SUR.
'
£ 7
_
i 2P:p
°C
25
\
SUR
25
SUR.
24
t
.'ER MILE 12.8
Sal 'in.
ppi
Cond.
DO BOD,
opTi ppin
! 1 6.71
i
1
i
fi.Rl
|
TOC
ppm
4.45
.
1.095 .534
r::;ii "l ~r''r'
1.604 i .746
i
j
.
i
|
j
i 1 i
1.224 .549 1.622 j 1.999
i
i !
I !
! !
| 5.11 2.62
i
!
i j
i
SIJR.
-
20 . 5' !
: 1
; !
.
1
1
1
1
.849
i
.209 1.362.! .596
7.2l! 1
i
J
I |
i
i
i
i
1
1
1.158J .368 1.648! 1.233
I
!
|
i
I
per.
.895
1.260
.768
1.646
vc"i
3.0 |
;
i
i
i
i
1
;
i
I
1
|
I
i
;
:
i
i
i i
i i
i i '
-------
I.VESTUARY
SA:-:?LI;\S STATIC
L-7C
15.5
: ;
i
-'te-T"!:"" iTIco
6/4/73 1035 I
1
i
I
i
I
6/5/73 1045 '
j
!
i
i
i
i
. 6/6/73 0958 j
i
!'
i
i
i
6/7/73 0950 j
I
: i
!
|
I
"l.^Ct-1".
1
, 0;".r>
0.-'"'"
20.5
21.5
21
21
Sal in.
??t
_ . i _ ~ i
Ccr.a. | DO
i 3 ^.T;
i
1 8.98
|
i
1
i
i
i 8.38
!
I
i
!
1
:
I
i 7.61
!
i
:
i
j
1 8.76
i
i
i
!
!
Bj'Dr-
n
0.21
T~~
TOC
-» p-*i
rT-:-
5.39
11.83
44.50
8.53
'.
T:
-------
SA-XPLING STATIONS
'3. L-7C
15.5
i Dr.ts-T'ir.is 7 'Ids
i 7/9/73 1130
i
!
7/10/73 1135
i
|
i
! 7/11/73 1052
i
1
1 7/12/73 1030
1
i
;
: i
~i « ri -^ '«
SUR.
SUR
SUR^
SUR.
~o;y.n
op
26
25 5
23.5
21.5
SQ! 1 n .
P?^
Co no.
no j
L* ' J
pp"i
8.67i
8.72
4.28
9.48
BOD-
??'"
1.32
TOC
ppm
i
4.06
T:
!
. I
1
I
-------
?.IVEP./ESTUA?.Y SAMFLIKG STATIONS
vD. L-7D SIVER MILE
15.7
j.'.'i-D-T'ir.is
6/4/73 1020
6/5/73 1030
6/6/73 0952
6/7/73 0950
i
; " f\ Q
rinn-f-'n
1* - - ^ . :
! 2"p
c r1
»/
20.5
21.5
22
21.5
1
Sal 1r:.
ppt '
Ccnd.
r."
Vv)
OPT.
1
9.40
8.37
8.57
8.63
BODg
ppir;
0.81
TT"
! \J -^
_ppi?,
3.90
8.82
3.58
3.44
TKN
PPn
.375
.533
.820
.
.580
i'
.077
.843
.218
.172
r 'r> ~. r- /
- -"
,-t
i
2.3
:
1
|
i
.
-------
ENT A IVR/ESTUARY SAMPLING STATIONS
::; NO. -L-7D RIVER MILE
15.7
'2 ~ "t'^-T "!.".: 2
7/9/73 1120
7/10/73 1120
7/11/73 1040
7/12/73 1013
-
.
;
Tide
Depth
SUR.
SUR.
SUR.
SUR.
Ta-,,
f\ r\
"
25.5
25.5
.
23.5
20.0
Sal in.
ppt
Cond.
r,^.
\j\j
o^m
9.66
10. It
4.74
10.5C
30D5
TV".
rr-"1
.68
1.43
1.42
i 1.27
.
TCC
PF^
3.24
TKN
ppm
.453
.513
.597
.601
1
NH--N
PpS
.033
.125
.110
.029
:r\ ~''^
"-?"^3
PP" -
1.081
.919
-
1.080
1.097
Pi i
??~ j
.032 1
!
i
.018 i
i
i
i
.016
!
.034
~2
0^;"
.096
.994
.117
.135
C"ic-
^\
4.5
i
i
i
!
i
!
.
------- |