U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
PACIFIC NORTHWEST ENVIRONMENTAL RESEARCH LABORATORY
An Associate Laboratory of the
NATIONAL ENVIRONMENTAL RESEARCH CENTER - CORVALLIS, OREGON
and
NATIONAL ENVIRONMENTAL RESEARCH CENTER - LAS VEGAS, NEVADA
ft GPO 697-O32
-------
REPORT
ON
DEEP CREEK LAIC
GARRETT COUNTY
WRYLM)
EPA REGION III
WORKING PAPER No, 355
WITH THE COOPERATION OF THE
MARYLAND DEPARTMENT OF NATURAL RESOURCES,
flARYLAND DEPARTMENT OF HEALTH AND I^NTAL HYGIENE,
AND THE
MARYLAND NATIONAL GUARD
JUNE, 1975
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REPORT ON DEEP CREEK LAKE
GARRETT COUNTY, MARYLAND, EPA REGION III
by
National Eutrophication Survey
Water and Land Monitoring Branch
Monitoring Applications Laboratory
National Environmental Research Center
Las Vegas, Nevada
and
Eutrophication Survey Branch
Pacific Northwest Environmental Research Laboratory
National Environmental Research Center
Corvallis, Oregon
Working Paper No. 355
OFFICE OF RESEARCH AND DEVELOPMENT
U.S. ENVIRONMENTAL PROTECTION AGENCY
June 1975
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CONTENTS
Page
Foreword i i
List of Maryland Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
III. Lake Water Quality Summary 5
IV. Nutrient Loadings 10
V. Literature Reviewed 14
VI. Appendices 15
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11
FOREWORD
The National Eutroph1cat1on Survey was Initiated 1n 1972
1n response to an Administration commitment to Investigate the
nationwide threat of accelerated eutrophlcatlon to freshwater
lakes and reservoirs.
OBJECTIVES
The Survey was designed to develop, 1n conjunction with
state environmental agencies, information on nutrient sources,
concentrations, and impact on selected freshwater lakes as a
basis for formulating comprehensive and coordinated national,
regional, and state management practices relating to point
source discharge reduction and nonpolnt source pollution
abatement 1n lake watersheds.
ANALYTIC APPROACH
The mathematical and statistical procedures selected for
the Survey's eutrophication analysis are based on related
concepts that:
a. A generalized representation or model relating
sources, concentrations, and impacts can be
constructed.
b. By applying measurements of relevant parameters
associated with lake degradation, the generalized
model can be transformed into an operational
representation of a lake, its drainage basin, and
related nutrients.
c. With such a transformation, an assessment of the
potential for eutrophication control can be made.
LAKE ANALYSIS
' In this report, the first stage of evaluation»of lake and
watershed data collected from the study lake and its drainage
basin is documented. The report is formatted to provide state
environmental agencies with specific information for basin
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iii
planning [§303(e)], water quality criteria/standards review
[§303(c]], clean lakes [§314(a,b)], and water quality monitoring
[§106 and §305(b)] activities mandated by the Federal Water
Pollution Control Act Amendments of 1972.
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condi-
tion are being made to advance the rationale and data base for
refinement of nutrient water quality criteria for the Nation's
freshwater lakes. Likewise, multivariate evaluations for the
relationships between land use, nutrient export, and trophic
condition, by lake class or use, are being developed to assist
in the formulation of planning guidelines and policies by EPA
and to augment plans implementation by the states.
ACKNOWLEDGMENTS
The staff of the National Eutrophication Survey (Office of Research
and Development, U.S. Environmental Protection Agency) expresses sincere
appreciation to the Maryland Department of Natural Resources and the
Maryland Department of Health and Mental Hygiene for professional involve-
ment and to the Maryland National Guard for conducting the tributary
sampling phase of the Survey.
Paul W. Slunt, Chief, Water Quality Services, James T. Allison,
Natural Resources Manager, Water Quality Services, of the Maryland
Department of Natural Resources, and Earl S. Quance, Chief, Division
of Water and Sewerage, Maryland Department of Health and Mental Hygiene
provided invaluable lake documentation and counsel during the course of
the Survey.
Major General Edwin Warfield III, the Adjutant General of Maryland,
and Project Officer Colonel Bernard Feingold, who directed the volunteer
efforts of the Maryland National Guardsmen, are also gratefully acknowl-
edged for their assistance to the Survey.
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iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF MARYLAND
LAKE NAME COUNTY
Deep Creek Lake Garrett
Liberty Reservoir Carroll, Baltimore
Loch Raven Reservoir Baltimore
Johnson Pond Wicomico
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79'25'
79 20
79'15'
DEEP CREEK LAKE
Tributary Sampling Site
x Lake Sampling Site
«O Drainage Area Boundary
1 ? ? J 5
~~ "
39'35'
/ Map Location
7^
w.
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DEEP CREEK LAKE
STORE! NO. 2402
I. CONCLUSIONS
A. Trophic Condition*'
Deep Creek Lake is characterized as mesotrophic on the
basis of survey data. Nutrient concentrations and potential
for primary productivity as measured by algal assay control
yield were low, while Secchi disc transparency was high. No
algal blooms or aquatic weeds were noted by survey limnologists,
and chlorophyll a_ levels were moderately low. However, oxygen
depletion occurred below 9.7 meters during summer and fall,
and bottom hydrogen sulfide formation was reported at
station 2 during October sampling.
B. Rate-Limiting Nutrient:
Algal assay results indicate that Deep Creek Lake was
limited by available phosphorus levels. Spikes with phos-
phorus, and nitrogen and phosphorus simultaneously result
in increases in assay yield. Additions of nitrogen alone
did not stimulate a growth response. The ratio of available
nitrogen to phosphorus in sampled waters substantiates phos-
phorus limitation.
* See Appendix E
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C. Nutrient Controllability:
1. Point Sources - During the sampling year, the mean
annual phosphorus load impacting Deep Creek Lake was
less than the "permissible" (oligotrophic) rate pro-
posed by Vollenweider (in press) for a lake of such
volume and detention time. Shoreline septic tanks,
estimated to account for 9% of the total phosphorus
load, are the only known discharges reaching the
lake. Future point sources should be carefully
evaluated in order to maintain the existing high
quality of Deep Creek Lake.
2. Nonpoint Sources - The mean annual phosphorus load
from nonpoint sources was about 91% of the total
reaching the lake. Measured tributaries accounted
for 24.0% of the total phosphorus load and ungaged
tributaries accounted for 57.3%
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
Lake and drainage basin characteristics are itemized below.
Lake morphometry was provided by the State of Maryland; tributary
data were provided by the Maryland District Office of the U.S.
Geological Survey (USGS) (outlet drainage area includes the lake
surface area). Mean hydraulic retention time was obtained by
dividing the lake volume by mean flow of the outlet.
All outflow from this reservoir is diverted through a
tunnel to the power generators of the Pennsylvania Electric
Company [site F(l)]. This outflow was combined with estimated
seepage from Deep Creek Dam to determine total outflow.
Precipitation values are estimated by methods as outlined
in National Eutrophication Survey (NES) Working Paper No. 175.
A table of metric/English conversions is included as Appendix D.
A. Lake Morphometry:
p
1. Surface area: 15.78 km .
2. Mean depth: 8.1 meters.
3. Maximum depth: 21.9 meters.
4. Volume: 127.842 x 106 m3.
5. Mean hydraulic retention time: 1.1 years.
-------
Tributary and Outlet:
(See Appendix A for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2) (nrysec)
B(l) Cherry Creek 32.1 0.49
C(l) Meadow Mountain Run 7.8 0.19
D(l) North Glade Run 10.3 0.13
E(l) Pawn Run 5.6 0.16
Minor tributaries &
immediate drainage - 95.8 2.58
Totals 151.6 3.55
2. Outlet - F(l) Outlet Aqueduct 167.6 3.55
Precipitation:
1. Year of sampling: 129.9 centimeters.
2. Mean annual: 121.4 centimeters.
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III. LAKE WATER QUALITY SUMMARY
Deep Creek Lake was sampled three times during the open-water
season of 1973 by means of a pontoon-equipped Huey helicopter. Each
time, samples for physical and chemical parameters were collected
from four stations on the lake and from a number of depths at each
station (see map, page v). During each visit, depth-integrated
samples were collected from each station for chlorophyll a_ analysis
and phytoplankton identification and enumeration. During the first
visit, 18.9-liter depth-integrated samples were composited for algal
assays. Maximum depths sampled were 19.5 meters at station 1,
17.1 meters at station 2, 12.2 meters at station 3, and 11.0 meters
at station 4. For a more detailed explanation of MES methods, see
NES Working Paper No. 175.
The results obtained are presented in full in Appendix B and
are summarized in III A for waters at the surface and at the maxi-
mum depth for each site. Results of the phytoplankton counts and
chlorophyll ^determinations are included in III B. Results of the
limiting nutrient study are presented in III C.
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PARAMETER
TEMP 1C)
DISS OXY (MG/L)
CNDCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/L)
ORTHO P (MG/L)
N02*N03 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
INORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L)
SECCHI (METERS)
A. SUMMARY OF PHYSICAL AND
1ST SAMPLING ( 4/21/73)
4 SITES
CHEMICAL CHARACTERISTICS FOR DEEP CREEK LAKE
STORET CODE 2402
2ND SAMPLING ( 7/28/73)
4 SITES
3RD SAMPLING (10/ 4/73)
4 SITES
RANGE
6.1
10.5
55.
7.7
10.
0.006
0.002
0.400
0.020
0.200
0.450
0.600
4.3
1.8
- 11.9
- 11.4
- 65.
8.3
10.
- 0.017
- 0.005
- 0.580
- 0.080
- 0.600
- 0.620
- 1.010
- 7.0
3.0
MEAN
8.6
11.1
59.
7.9
10.
0.009
0.003
0.455
0.045
0.292
0.500
0.747
5.2
2.2
MEDIAN
8.0
11.2
60.
7.9
10.
0.007
0.004
0.460
0.050
0.200
0.500
0.665
4.8
2.0
RANGE
10.6
1.3
40.
5.8
10.
0.009
0.004
0.160
0.030
0.200
0.240
0.440
4.7
3.0
- 24.4
8.3
59.
6.9
20.
- 0.017
- 0.009
- 0.360
- 0.360
- 0.500
- 0.590
- 0.730
9.5
4.3
MEAN
20.5
6.1
53.
6.2
12.
0.012
0.006
0.252
0.126
0.300
0.378
0.552
7.9
3.7
MEDIAN
23.5
7.7
56.
6.1
10.
0.011
0.006
0.250
0.055
0.300
0.335
0.525
8.6
3.7
RANGE
9.7
0.2
48.
5.9
10.
0.008
0.002
0.040
0.090
0.300
0.150
0.350
3.0
2.3
- 19.9
8.0
75.
6.7
23.
- 0.100
- 0.010
- 0.140
- 0.850
- 1.100
- 0.890
- 1.150
6.9
3.8
MEAN
17.8
5.8
SS.
6.2
11.
0.018
O.«06
0.078
0.229
0.585
0.308
0.663
5.3
3.1
MEDIAN
18.9
7.3
53.
6*2
10.
0.014
0.006
0.075
0.110
O.SOO
0.190
0.595
5.7
3.1
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B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
04/21/73
07/23/73
10/04/73
Dominant
Genera
1. Flagellates
2. Dinobryon
3. Asterionel la
4. Cryptomonas
5. Ankistrodesmus
Other genera
Total
1. Chrysocapsa
2. Dinobryon
3. Flagellates
4. Stephanodiscus
5. Melosira
Other genera
Total
1. Tabellaria
2. Dinobryon
3. Flagellates
4. Melosira
5. Synura
Other genera
Total
Algal
Units
jer ml
334
167
128
128
69
107
933
686
591
528
169
137
370
2,481
821
692
315
231
147
203
2,409
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2. Chlorophyll a. -
Sampling
Date .
04/21/73
07/28/73
10/04/73
Station
Number
1
2
3
4
1
2
3
4
1
2
3
4
Chlorophyll a
(ml crograms/Tl ter
5.0
4.3
4.7
7.0
4.7
8,9
8.4
9.5
5.6
3.0
5.8
6.9
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C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Spike(mg/1)
Control
0.05 P
0.05 P + 1.0 N
1.00 N
Ortho P
Cone. (mg/1)
0.008
0.058
0.058
0.008
Inorganic N
Cone. (mg/1)
0.482
0.482
1.482
1.482
Maximum Yield
(mg/1 -dry wt.)
0.2
7.2
13.4
0.1
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum, indicates that the potential for primary produc-
tion in Deep .Creek Lake was low at the time of sampling. The
increase in yield with the addition of 0.05 mg/1 phosphorus
indicates phosphorus limitation. Spikes of nitrogen alone
produced no positive growth response. Maximum growth poten-
tial was achieved with the simultaneous addition of both
phosphorus and nitrogen.
The ratio of inorganic nitrogen to dissolved phosphorus
was about 64:1 in the field samples for Deep Creek Lake,
indicating the lake was phosphorus limited at the time of
assay sample collection.
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10
IV. NUTRIENT LOADINGS
(See Appendix C for data)
For the determination of nutrient loadings, the Maryland
National Guard collected monthly near-surface grab samples from
each of the tributary sites indicated on the map (page v), ex-
cept for the high runoff months of February and March when two
samples were collected. Sampling was begun in May 1973, and
was completed in May. 1974.
Through an interagency agreement, stream flow estimates
for the year of sampling and a "normalized" or average year
were provided by the Maryland District Office of the USGS for
the tributary sites nearest the lake.
In this report, nutrient loads for sampled tributaries were
calculated from mean annual concentrations and mean annual flows.
Nutrient loadings for unsampled "minor tributaries and im-
mediate drainage" ("ZZ" of USGS) were estimated by using the mean
annual concentrations in Cherry Creek Meadow, Mountain Run and
North Glade Run at stations B(l), C(l), and D(l) and mean annual
ZZ flow.
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11
A. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
% of
Source kg P/yr total
a. Tributaries (nonpoint load) -
B(l) Cherry Creek 205 7.2
C(l) Meadow Mountain Run 90 3.2
D(l) North Glade Run 130 4.6
E(l) Pawn Run 255 9.0
b. Minor tributaries & immediate
drainage (nonpoint load) - 1,625 57.3
c. Known municipal STP's - None
d. Septic tanks* - 255 9.0
e. Known industrial - None
f. Direct precipitation** - 275 9.7
Total 2,835 100.0
2. Outputs - Outlet Aqueduct 890
3. Net annual P accumulation - 1,945 kg.
*Estimate based on 900 lakeside residences.
**Estimated (see NES Working Paper No. 175).
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12
B. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
% of
Source kg N/yr total
a. Tributaries (nonpoint load) -
B(l) Cherry Creek 9,285 7.0
C(l) Meadow Mountain Run 4,715 3.5
D(l) North Glade Run 6,205 4.7
E(l) Pawn Run 10,665 8.0
b. Minor tributaries & immediate
drainage (nonpoint load) - 75,635 56.8
c. Known municipal STP's - None
d. Septic tanks * - 9,590 7.2
e. Known industrial - None
f. Direct precipitation** - 17.040 12.8
Total 133,135 100.0
2. Outputs - Outlet Aqueduct 68,106
3. Net annual N accumulation - 65,029 kg.
*Estimate based on 900 lakeside residences.
**Estimated (see NES Working Paper No. 175).
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13
Z. Mean Annual Nonpolnt Nutrient Export by Subdralnage Area:
Tributary kg P/km2/yr kg N/km2/yr
B(l) Cherry Creek 6 289
C(l) Meadow Mountain Run 12 604
D(l) North Glade Run 13 602
E(l) Pawn Run 46 1,904
D. Yearly Loading Rates:
In the following table, the existing phosphorus loading
rates are compared to those proposed by Vollenwelder (1n press).
Essentially, his "dangerous" rate is the rate at which the
receiving waters would become eutrophic or remain eutrophlc; his
"permissible" rate is that which would result in the receiving
water remaining oligotrophic or becoming oligotrophic 1f mor-
phometry permitted. A mesotrophic rate would be considered one
between "dangerous" and "permissible".
Total Yearly
Phosphorus Loading Rate
(grams/m^/year)
Estimated loading rate for Deep Creek Lake 0.18
Vollenweider's "dangerous" or eutrophic rate 0.53
Vollenweider's "permissible" or oligotrophic rate 0.26
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14
V. LITERATURE REVIEWED
U.S. Environmental Protection Agency. 1975. "National
Eutrophication Survey Methods 1973-1976." Working Paper
No. 175. NERC, Las Vegas, Nevada and PNERL, Corvallis,
Oregon.
Vollenweider, Richard A. (in press). "Input-Output Models."
Schweiz Z. Hydro!.
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15
VI. APPENDICES
APPENDIX A
TRIBUTARY FLOW DATA
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TRIBUTARY FLOW INFORMATION FOR MARYLAND
9/16/75
LAKE CODE 3402 DEEP CREEK RESERVOIR
TOTAL DRAINAGE AREA OF LAKE(SO KH)
SUB-DRAINAGE
TRIBUTARY AREA(SO KM) JAN
FES
167.6
MAR
APR
MAY
NORMALIZED FLOMS(CMS)
JUN JUL AUG
SEP
OCT
NOV
DEC
MEAN
2402A1
2402B1
2402C1
240 201
240 2E1
240 2F1
2402ZZ
171.5
32.1
7.8
10.3
5.6
167.6
111.6
0.15
0.79
0.28
0.22
0.27
3.71
4.13
0.16
0.88
0.31
0.24
0.31
3.14
4.45
0.20
1.08
0.40
0.28
0.40
3.40
5.61
0.14
0.76
0.28
0.21
0.26
3.03
3.96
0.10
0.54
0.20
0.15
0.18
2.72
2.86
0.06
0.28
0.12
0.08
0.08
2.58
1.53
0.04
0.20
0.09
0.06
0.05
2.89
1.10
0.05
0.22
0.09
0.06
0.06
4.08
1.19
0.03
0.11
O.OS
0.03
0.03
3.71
0.62
0.03
0.15
0.07
0.05
0.04
4.28
0.82
0.06
0.31
0.13
0.08
0.08
4.53
1.61
.11
.59
0.23
0.17
0.20
4.33
3.14
0.09
0.49
0.19
0.13
0.16
3.54
2.58
240281
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
73
73
73
73
73
73
73
73
74
74
74
74
73
73
73
73
73
73
73
73
74
74
74
74
0.10
0.07
0.02
0.03
0.02
0.05
0.11
0.19
0.25
0.12
0.13
0.15
0.54
0.37
0.09
0.12
0.09
0.23
0.57
1.05
1.44
0.62
0.68
0.82
12
10
16
12
9
14
11
9
13
9
9
14
12
10
16
12
9
14
11
9
13
9
9
14
167.6
167.5
TOTAL DRAINAGE AREA OF LAKE
SUM OF SUB-DRAINAGE AREAS
NOTE ** SEE WRITE-UP ON DEEP CREEK RESERVOIR
MEAN MONTHLY FLOWS AND OAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY FLOW DAY
2402A1
0.16
0.05
0.03
0.02
0.01
0.02
0.06
0.08
0.37
0.15
0.13
0.23
0.88
0.22
0.10
0.07
0.02
0.08
0.28
0.40
2.12
0.85
0.71
1.30
24
24
24
24
SUMMARY
TOTAL FLOW IN
TOTAL FLOW OUT
FLOW DAY
FLOW
0.13
0.13
0.71
0.68
42.79
43.51
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LAKE CODE 3402
TRIBUTARY FLOW INFORMATION FOR MARYLAND
DEEP CREEK RESERVOIR
9/16/75
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR
2402C1
240201
2402E1
2402F1
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
73
73
73
73
73
73
73
73
74
74
74
74
73
73
73
73
73
73
73
73
74
74
74
74
73
73
73
73
73
73
73
73
74
74
74
74
73
73
73
73
73
73
73
73
74
74
74
74
MEAN FLOW DAY
0.20
0.14
0.05
0.06
0.05
0.10
0.22
0.37
0.48
0.24
0.26
0.31
0.15
0.10
0.03
0.03
0.03
0.06
0.15
0.28
0.37
0.17
0.19
0.22
0.18
0.10
0.02
0.03
0.02
0.06
0.18
0.37
0.54
0.21
0.23
0.28
5.80
4.16
3.20
2.80
1.39
1.98
2.80
3.40
6.91
7.90
4.93
3.45
12
10
16
12
9
14
11
9
13
9
9
14
12
10
16
12
9
14
11
9
13
9
9
14
12
10
16
12
9
14
11
9
13
9
9
14
12
10
16
12
8
3
2
19
15
2
FLOW DAY
0.31
0.09
0.05
0.03
0.01
0.04
0.12
0.16
0.68
0.31
0.26
0.45
0.24
0.06
0.03
0.02
0.01
0.02
0.08
0.11
0.54
0.22
0.19
0.34
0.31
0.06
0.03
0.01
0.01
0.02
0.08
0.12
0.85
0.28
0.23
0.48
0.99
0.0
1.19
0.0
2.75
2.83
4.19
7.25
5.61
3.09
24
24
24
24
24
24
16
17
16
28
14
FLOW DAY
0.26
0.25
0.19
0.18
0.24
0.23
2.80
2.60
7.14
7. 56
0.0
FLOW
28
31
17
4.25
9.71
3.26
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LAKE CODE 2402
TRIBUTARY FLOW INFORMATION FOR MARYLAND
DEEP CREEK RESERVOIR
9/16/75
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY
2402ZZ
5
6
7
8
9
10
11
12
1
2
3
4
73
73
73
73
73
73
73
73
74
74
74
74
2.86
1.90
0.54
0.65
0.54
1.22
2.97
5.38
7.16
3.31
3.57
4.25
12
10
16
12
9
14
11
9
13
9
9
14
FLOW DAY
4.47
1.19
0.59
0.37
0.14
0.45
1.47
2.12
10.34
4.28 24
3.62 24
6.65
FLOW DAY
FLOW
3.65
3.54
-------
APPENDIX B
PHYSICAL and CHEMICAL DATA
-------
STORE! RETRIEVAL DATE 75/09/16
240201
39 30 38.0 079 23 22.0
DEEP CREEK LAKE
24023 MARYLAND
DATE
FROM
TO
73/04/21
73/07/28
73/10/04
TIME
OF
DAY
13 30
13 30
13 30
13 30
13 30
13 30
13 30
11 40
11 40
11 40
11 40
11 40
11 40
11 40
11 40
11 40
15 50
15 50
15 50
15 50
15 50
15 50
DEPTH
FEET
0000
0006
0015
0022
0032
0045
0060
0000
0005
0010
0015
0020
0025
0030
0040
0050
0000
0005
0015
0025
0045
0057
00010
WATER
TEMP
CENT
11.9
10.8
9.4
7.0
6.5
6.2
6.1
23.5
23.5
23.5
23.3
22.1
18.0
15.5
13.6
10.6
19.1
19.0
18.9
18.5
11.6
9.7
11EPALES
00300
DO
MG/L
11.3
11.4
11.4
11.0
10.9
10.7
8.0
8.3
8.2
6.9
3.0
7.6
7.2
6.8
0.2
0.4
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
120 60
55
55
55
55
55
55
144 56
56
56
54
50
45
42
40
40
149 51
50
50
48
50
55
3
00400
PH
SU
7.80
7.90
8.00
8.00
8.00
7.90
7.90
6.70
6.60
6.20
5.80
5.80
6.70
6.20
6.10
6.00
5.90
6.00
00410
T ALK
CAC03
MG/L
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
13
17
2111202
0064
00610
NH3-N
TOTAL
MG/L
0.060
0.050
0.050
0.050
0.050
0.050
O.OBO
0.040
0.040
0.050
0.090
0.210
0.190
0.180
0.190
0.140
0.630
0.830
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.600
0.600
0.200K
0.200
0.200K
0.200K
0.204K
0.3*0
0.200K
0.200K
0.200K
0.400
0.600
0.500
0.700
0.700
1.000
1.100
00630
N024NO3
N- TOTAL
MG/L
0.400
0.410
0.400
0.400
0.400
0.400
0.430
0.300
0.290
0.290
0.360
0.310
0.140
0.130
0.140
0.110
0.050
0.050
00671
PHOS-OIS
ORTHO
MG/L P
.005
.004
.004
.0*4
.004
.004
0.002K
0.007
0.007
0.009
0.008
0.006
0.005
0.003
0.002
0.008
0.003
0.002
K VALUE KNOWN TO «E
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/09/16
DATE
FROM
TO
73/0^/21
OF
OAY FEET
73/07/28
73/10/04
13
13
13
13
13
13
13
11
11
11
11
11
15
15
15
15
15
15
30
30
30
30
30
30
30
40
40
40
40
40
50
50
50
50
50
50
0000
0006
0015
0022
0032
0045
0060
0000
0015
0020
0030
0050
0000
0005
0015
0025
0045
0057
0665
S-TOT
i/L P
0.007
0.006
0.006
0.006
0.006
0.006
0.008
0.010
0.012
0.017
0.011
0.011
0.008
0.008
0.008
0.011
0.014
0.018
32217
CHLRPHYL
A
UG/L
5.0
4.7
5.6
240201
39 30 38.0 079 23 22.0
DEEP CREEK LAKE
24023 MARYLAND
11EPALES
3
2111202
0064 FEET
DEPTH
-------
STORET RETRIEVAL DATE 75/09/16
240202
39 31 40.0 079 20 54.0
DEEP CREEK LAKE
24023 MARYLAND
DATE
FROM
TO
73/04/21
73/07/28
73/10/04
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
14
14
14
14
14
14
14
12
12
12
12
12
12
12
12
12
15
15
15
15
15
10
10
10
10
10
10
10
30
30
30
30
30
30
30
30
30
25
25
25
25
25
0000
0006
0015
0022
0030
0040
0052
0000
0010
0015
0020
0025
0030
0035
0040
0045
0000
0005
0015
0025
0045
CENT
11.
10.
10.
8.
6.
6.
6.
24.
23.
23.
23.
19.
15.
14.
13.
12.
19.
19.
18.
18.
14.
6
9
0
2
9
7
7
2
9
8
5
2
5
5
6
9
1
1
7
5
0
00300
DO
MG/L
11.
11.
11.
11.
11.
10.
8.
8.
7.
2.
1.
8.
7.
7.
0.
4
4
4
2
0
9
0
0
2
9
3
0
4
2
2
11EPALES
00300
DO
MG/L
11.4
11.4
11.4
11.2
11.0
10.9
8.0
8.0
7.2
2.9
1.3
8.0
7.4
7.2
0.2
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES HICROMHO
84 58
60
58
60
60
60
60
168 57
57
56
55
50
48
47
47
48
144 53
51
51
52
75
3
00400
PH
SU
7.70
7.90
7.90
7.80
7.70
7.80
7.70
6.60
6.40
5.80
5.80
5.90
6.10
6.00
6.00
6.00
6.30
2111202
0056 FEET DEPTH
00410
T ALK
CAC03
MG/L
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
14
14
10
10K
10
10
23
00610
NH3-N
TOTAL
MG/L
0.030
0.040
0.030
0.030
0.060
0.050
0.060
0.050
0.030
0.050
0.350
0.360
0.100
0.100
0.100
0.110
0.850
00625
TOT KJEL
N
MG/L
0.400
0.200K
0.200
0.200
0.200
0.200K
0.200
0.200K
0.200K
0.200K
0.400
0.500
0.500
0.500
0.400
0.400
1.100
00630
N02&N03
N-TOTAL
MG/L
0.480
0.490
0.460
0.460
0.440
0.420
0.440
0.270
0.270
0.260
0.220
0.230
0.100
0.090
0.080
0.080
0.040
00671
PHOS-OIS
ORTHO
MG/L P
0.004
0.005
O.OOS
0.002K
0.002
0.002
0.005
O.OOS
0.006
0.005
0.005
0.009
0.006
0.010
0.007
0.004
0.006
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/09/16
DATE
FROM
TO
73/04/21
73/07/28
73/10/04
00665 32217
TIME DEPTH PHOS-TOT CHLRPHYL
OF A
DAY FEET
14
14
14
14
14
14
14
12
12
12
12
12
15
15
15
15
15
10
10
10
10
10
10
10
30
30
30
30
30
25
25
25
25
25
0000
0006
0015
0022
0030
0040
0052
0000
0015
0020
0030
0045
0000
0005
0015
0025
0045
MG/L P
0.008
0.008
0.007
0.007
0.007
0.006
0.006
0.009
0.010
0.010
0.011
0.012
0.010
0.015
0.010
0.014
0.100
UG/L
4.3
8.9
3.0
240203
39 31 40.0 079 20 54.0
DEEP CREEK LAKE
24023 MARYLAND
11EPALES
3
2111202
0056 FEET
DEPTH
-------
STORET RETRIEVAL DATE 75/09/16
240303
39 30 25.0 079 18 42.0
DEEP CREEK LAKE
24023 MARYLAND
DATE
FROM
TO
73/04/21
73/07/28
73/10/04
TIME DEPTH
OF
DAY FEET
14 40 0000
14 40 0006
14 40 0016
14 40 0026
14 40 0036
13 05 0000
13 05 0005
13 05 0010
13 05 0015
13 05 0020
13 05 0025
13 05 0030
15 05 0000
15 05 0005
15 05 0015
15 05 0025
15 05 0032
00010
WATER
TEMP
CENT
10.7
10.4
9.0
7.6
7.1
24.4
24.1
24.0
23.9
23.6
20.0
14.7
19.2
19.2
18.9
18.7
17.2
11EPALES
00300
DO
MG/L
11.2
11.2
11.2
11.1
8.2
8.0
4.8
2.0
8.0
7.8
7.4
2.6
00077
TRANSP
SECCHI
INCHES
75
144
104
00094
CNDUCTVY
FIELD
MICROMHO
60
60
60
60
60
58
58
57
57
56
53
50
55
53
52
53
62
3
00400
PH
SU
8.00
8.00
7.90
7.90
7.70
6.50
6.30.
5.90
6.00
6.30
6.20
6.20
6.30
6.00
00410
T ALK
CAC03
MG/L
10K
10K
10K
10K
10K
10
10K
11
16
10K
10K
10K
10K
15
2111202
0040
00610
NH3-N
TOTAL
MG/L
0.040
0.040
0.040
0.050
0.050
0.060
0.030
0.160
0.280
0.100
0.100
0.100
0.100
0.360
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.400
0.200
0.300
0.200
0.200
0.300
0.200
0.200
0.400
0.500
0.400
0.400
0.300
0.700
. 00630
N02&N03
N-TOTAL
MG/L
0.460
0.470
0.480
0.450
0.460
0.240
O.d40
0.260
0.220
0.080
0.080
0.070
0.070
0.040
00671
PHOS-DIS
ORTHO
MG/L P
0.003
0.005
0.002K
0.003
0.003
0.006
o.ooa
0.005
0.006
0.006
0.007
o.ooa
0.006
0.007
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/09/16
DATE
FROM
TO
73/04/21
73/07/28
73/10/04
00665 32217
TIME DEPTH PHOS-TOT CHLRPHYL
OF A
DAY FEET
14
14
14
14
14
13
13
13
13
15
15
15
15
15
40
40
40
40
40
05
05
05
05
05
05
05
05
05
0000
0006
0016
0026
0036
0000
0015
0025
0030
0000
0005
0015
0025
0032
MG/L P
0.007
0.007
0.013
0.011
0.007
0.010
0.014
0.012
0.011
0.013
0.014
0.013
0.016
0.020
UG/L
4.7
8.4
5.8
240203
39 30 25.0 079 18 42.0
DEEP CREEK LAKE
24023 MARYLAND
11EPALES
3
2111202
0040 FEET
DEPTH
-------
STORET RETRIEVAL DATE 75/09/16
240204
39 28 40.0 079 17 26.0
DEEP CREEK LAKE
24023 MARYLAND
DATE
FROM
TO
73/04/21
73/07/28
73/10/04
TIME DEPTH
OF
DAY FEET
15 10
15 10
15 10
15 10
15 10
13 35
13 35
13 35
13 35
13 35
13 35
13 35
14 40
14 40
14 40
14 40
0000
0006
0015
0022
0032
0000
0005
0010
0015
0020
0025
0030
0000
0005
0015
0024
00010
WATER
TEMP
CENT
11.2
10.5
7.8
6.9
6.6
24.4
24.3
24.2
24.1
23.9
20.5
16.5
19.9
19.1
18.9
18.5
HEP ALES
00300
DO
MG/L
11.4
11.4
10.6
10.5
8.1
8.0
7.4
1.4
8.0
7.8
6.6
00077
TRANSP
SECCHI
INCHES
72
120
90
00094
CNDUCTVY
FIELD
MICROMHO
65
60
60
60
60
57
59
59
56
56
56
57
60
56
56
57
3
00400
PH
SU
8.30
8.10
8.00
8.00
8.00
6.90
6.70
6.00
6.00
6.40
6.40
6.30
6.30
00410
T ALK
CAC03
MG/L
10K
10K
10K
10K
10K
12
12
12
20
10K
10K
10K
10K
2111202
0036
00610
NH3-N
TOTAL
MG/L
0.030
0.020
0.040
0.040
0.050
0.040
0.040
0.080
0.300
0.110
0.090
0.100
0.110
FEET DEPTH
00625
TOT KJEL
N
MG/L
0.500
0.400
0.400
0.300
0.300
0.400
0.300
0.300
0.500
0.800
0.400
0.300
0.400
00630
N021N03
N-TOTAL
MG/L
0.500
0.500
0.580
O.S10
0.480
0.210
0.200
0.210
0.160
0.060
0.060
0.050
0.050
00671
PHOS-OIS
ORTHO
MG/L P
0.002
0.002
0.003
0.004
0.004
0.007
0.007
0.005
0.004
0.010
0.010
0.006
0.007
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/09/16
00665 33217
DATE TIME DEPTH PHOS-TOT CHLRPHYL
FROM OF A
TO DAY FEET MG/L P UG/L
73/04/21 15 10 0000 0.012 7.0
15 10 0006 0.014
15 10 0015 0.012
15 10 0022 0.017
15 10 0032 0.013
73/07/28 13 35 0000 0.013 9.5
13 35 0015 0.013
13 35 0020 0.011
13 35 0030 0.016
73/10/04 14 40 0000 0.020 6.9
14 40 0005 0.023
14 40 0015 0.016
14 40 0024 0.019
240204
39 28 40.0 079 17 26.0
DEEP CREEK LAKE
24023 MARYLAND
HEPALES
3
2111202
0036 FEET
DEPTH
-------
APPENDIX C
TRIBUTARY and WASTEWATER
TREATMENT PLANT DATA
-------
STORE! RETRIEVAL DATE 75/09/16
2402A1
39 31 00.0 079 24 20.0
DEEP CREEK
24017 7.5 SANG RUN
0/DEEP CREEK LAKE
SEC RO BROG .7 MI W OF 0AM
HEP ALES 2111204
4 0000 FEET
DATE
FROM
TO
73/05/12
73/06/10
73/07/16
73/08/12
73/09/09
73/10/14
73/11/11
73/12/09
74/01/13
74/02/09
74/02/24
74/03/09
74/03/24
74/04/14
74/05/12
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
13
16
13
16
08
16
12
13
09
12
10
12
09
11
08
15
00
17
53
28
25
30
20
00
20
28
30
30
00
22
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
180
033
140
154
015
075
210
188
232
252
216
184
224
160
156
MG/L
1.
0.
0.
0.
0.
0.
1.
0.
0.
0.
0.
0.
380
460
180
190
100K
560
700
100
100K
100K
100
100K
0.200
0.
200
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
052
060
016
033
090
039
096
024
018
020
055
010
050
040
090
MG/L P
0.005K
0.005K
0.007
0.012
0.005K
0.005K
0.005K
0.008
0.005K
0.010
0.005K
0.005K
0.005K
0.005K
0.005K
MG/L P
0.015
0.005K
0.007
0.012
0.005K
0.005K
0.010
0.005
0.025
0.010
0.025
0.005K
0.005K
0.005K
DEPTH
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/03/16
2402B1
39 32 20.0 079 18 55.0
CHERRY CREEK
24 7.5 MCHENRY
T/OEEP CREEK LAKE
BANK OFF ROCK LODGE RD .3 MI FROM MOUTH
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
73/05/12
73/06/10
73/07/16
73/08/12
73/09/09
73/10/14
73/11/11
73/12/09
74/01/13
74/02/09
74/02/24
74/03/09
74/03/24
74/04/14
74/05/12
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
13
16
13
17
08
16
12
13
09
12
10
12
09
11
08
46
20
45
20
55
50
55
45
25
45
54
55
50
25
45
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.200
.052
.082
.150
.088
.176
.260
.352
.400
.384
.390
.276
.360
.276
.140
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
600
330
610
920
270
350
250
200
100
100K
300
200
300
100
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
*
*
089
037
120
115
170
056
071
052
032
060
125
042
060
055
045
MG/L P
0.005K
0.006
0.005K
0.008
0.005K
0.008
0.005K
0.005K
0.005K
0.010
0.010
0.005K
0.005K
0.005K
0.005K
MG/L P
0.010
0.010
0.015
0.010
0.005K
0.008
0.045
0.005K
0.005
0.010
0.012
0.030
0.005K
0.005K
0.005K
K V«LUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/09/16
2402C1
39 31 00.0 079 17 14.0
MEADOW MOUNTAIN RUN
24 7.5 MCHENRY
T/DEEP CREEK LAKE
BANK OFF END OF BRANT RD 1000FT FR MOUTH
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
73/05/12
73/06/10
73/07/16
73/08/12
73/09/09
73/10/14
73/11/11
73/12/09
74/01/13
74/02/09
74/02/24
7<»/03/09
74/03/24
74/04/14
74/05/12
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
14
16
13
17
09
17
13
14
09
13
11
13
10
11
08
18
35
47
30
10
00
10
00
40
05
05
05
05
45
55
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
*
*
230
050
150
126
440
160
220
270
430
336
360
288
360
264
208
MG/L
1,
0,
0,
0,
0,
0,
1,
0,
0,
0,
0.
0,
1,
0,
0,
.100
.390
.190
,225
.480
,330
,550
.900
.100K
.300
.300
.100
.100
.200
.300
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.058
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
094
026
021
087
022
069
040
012
015
015
025
065
040
025
MG/L P
0.005K
0.006
0.010
0.009
0.011
0.007
0.005K
0.005K
0.005K
0.010
0.005K
0.005K
0.005K
0.005K
0.005K
MG/L P
0.020
0.025
0.020
0.020
0.020
0.007
0.020
0.005K
0.005
0.015
0.010
0.030
0.005
0.005
0.005K
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 75/09/16
2402D1
39 30 25.0 079 15 10.0
NORTH GLADE RUN
24 7.5 MCHENRY
T/DEEP CREEK LAKE
BANK OFF N GLADE RO BLOW 2 FORKS OF CRK
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
73/05/12
73/06/10
73/07/16
73/08/12
73/09/09
73/10/14
73/11/11
73/12/09
74/01/13
74/02/09
74/02/24
74/03/09
74/03/24
74/04/14
74/05/12
TIME DEPTH
OF
DAY FEET
14 44
16 50
14 10
17 50
09 25
17 15
13 30
14 12
10 00
13 45
11 23
13 25
10 25
12 00
09 10
00630
N02&N03
N-TOTAL
MG/L
1.020
0.014
0.910
0.880
0.030
1.300
1.200
1.260
1.360
1.260
1.400
1.180
1.300
1.100
0.650
00625
TOT KJEL
N
MG/L
0.790
0.250
0.660
0.700
0.370
0.380
0.400
1.100
0.100
0.100K
0.200
0.300
0.100
0.300
0.600
00610
NH3-N
TOTAL
MG/L
0.046
0.115
0.075
0.032
0.068
0.028
0.039
0.064
0.016
0.020
0.030
0.015
0.030
0.040
0.060
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.008
0.013
0.012
0.018
0.017
0.006
0.008
0.005K
0.015
0.005
0.005
0.005K
0.005
0.010
00665
PHOS-TOT
MG/L P
0.037
0.035
0.030
0.030
0.050
0.020
0.035
0.030
0.020
0.025
0.025
0.050
0.020
0.025
0.030
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 75/09/16
2402E1
39 28 12.0 079 19 20.0
PAWN RUN
24 7.5 DEER PARK
T/OEEP CREEK LAKE
BANK OFF PENN POINT RO 1000FT FROM MOUTH
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
73/05/12
73/06/10
73/07/16
73/08/12
73/09/09
73/10/14
73/11/11
73/12/09
74/01/13
74/02/09
74/02/24
74/03/09
74/03/24
74/04/14
74/05/12
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
15
17
14
18
09
17
14
15
10
14
11
13
11
12
09
11
10
45
15
55
45
00
00
30
30
57
50
00
25
30
MG/L
1,
1,
1,
1,
0.
1,
2,
1,
1.
1,
1.
1,
1,
1,
1,
.380
.400
.760
.500
.028
,360
.000
.900
.850
.800
.900
.850
.700
.600
.040
MG/L
0.350
0.560
0.690
0.800
0.430
0.660
0.350
0.900
0.400
0.100K
0.200
0.300
0.200
0.300
0.450
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.050
.126
.084
.064
.105
.024
.050
.052
.024
.030
.020
.020
.030
.025
.055
MG/L P
0.015
0.023
0.036
0.042
0.035
0.026
0.010
0.008
0.005K
0.015
0.010
0.010
0.005
0.010
0.015
MG/L P
0.045
0.055
0.075
0.080
0.035
0.050
0.050
0.025
0.030
0.025
0.035
0.065
0.030
0.035
0.035
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! (RETRIEVAL DATE 75/09/16
2402F1
39 31 24.0 079 24 50.0
OUTLET AQUEDUCT
24 7.5 SANG RUN
T/DEEP CREEK LAKE
AT BALTIMORE WATER SUPPLY POWER HOUSE
11EPALES 2111204
4 0000 FEET DEPTH
DATE
FROM
TO
73/11/08
73/11/16
73/12/03
73/12/13
73/12/17
73/12/28
74/01/02
74/01/16
74/01/31
74/02/19
74/02/26
74/03/15
74/04/02
74/04/17
74/05/02
74/05/17
74/06/03
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
10
10
13
15
10
09
10
10
10
12
11
09
13
13
10
13
15
30
30
00
30
30
30
30
30
30
00
30
30
00
00
30
30
00
MG/L
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
.066
.104
.116
.360
.052
.360
.134
.224
.336
.288
.288
.320
.312
.310
.320
.320
.300
MG/L
0.450
0.250
0.300
0.200
0.100
0.200
0.300
0.150
0.100K
0.200
0.300
0.200
0.300
0.300
0.200
0.100K
0.200
00610 00671 00665
NH3-N PHOS-UIS PHOS-TOT
TOTAL ORTHO
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.180
.084
.108
.032
.080
.056
.068
.048
.068
.045
.040
.040
.030
.020
.010
.025
.025
MG/L P
0.006
0.005K
0.005K
0.005K
0.005K
0.005K
0.008
0.005K
0.005K
0.005
0.005K
0.005K
0.005
0.005K
0.005K
0.010
0.005K
MG/L P
0.006
0.035
0.005K
0.010
0.005K
0.005K
0.008
0.005
0.005
0.015
0.025
0.005K
0.005
0.005K
0.005
0.010
0.005K
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX D
CONVERSION FACTORS
-------
CONVERSION FACTORS
Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
Cubic meters x 8.107 x 10 = acre/feet
Square kilometers x 0.3861 = square miles
Cubic meters/sec x 35.315 = cubic feet/sec
Centimeters x 0.3937 = inches
Kilograms x 2.205 = pounds
Kilograms/square kilometer x 5.711 = Ibs/square mile
-------
APPENDIX E
PARAMETRIC RANKINGS OF LAKES
SAMPLED BY NES IN 1973
STATE OF MARYLAND
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
1 2402 DEEP CREEK LAKE 550
2 2403 LIBERTY RESERVOIR 268
3 2^08 LOCH RAVEN RESERVOIR 215
4 2409 JOHNSON POND 167
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
2402 DEEP CREEK LAKE
2403 LIBERTY RESERVOIR
2408 LOCH RAVEN RESERVOIR
2409 JOHNSON POND
MEDIAN
TOTAL P
0.011
0.018
0.023
0.098
MEDIAN
INORG N
0.450
*
1.760
1.440
0.950
500-
MEAN SEC
382.167
401.833
429.555
458.250
MEAN
CHLORA
6.150
6.. 325
7.133
26.225
15-
MIN DO
14.800
14.900
14.800
7.200
MEDL
OISS ORTI
0.005
0.006
0.007
0.040
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
2402 DEEP CREEK LAKE
2403 LIBERTY RESERVOIR
2408 LOCH RAVEN RESERVOIR
2409 JOHNSON POND
MEDIAN
TOTAL P
100 (
67 (
33 (
0 (
3)
2)
1)
0)
MEDIAN
INORG
100 (
0 (
33 (
67 (
N
3)
0)
1)
2)
500-
MEAN SEC
100 (
67 (
33 <
0 <
3)
2)
1)
0)
MEAN
CHLORA
100 (
67 <
33 (
0 (
3)
2)
1)
0)
15-
MIN DO
50 (
0 (
50 (
100 (
1)
0)
1)
3)
MEDIAN
DISS ORTHO P
100 (
67 (
33 (
0 (
3)
2)
11
0)
INDEX
NO
550
268
215
167
------- |