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
•&GPO	697-032

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                                        REPORT
                                          ON
                                     JOHNSON POND
                                    WICOMICO COUNTY
                                       MARYLAND
                                    EPA REGION III
                                 WORKING PAPER No, 356
           WITH THE COOPERATION OF THE
    MARYLAND DEPARTMENT OF NATURAL RESOURCES,
MARYLAND DEPARTMENT OF HEALTH AND MENTAL HYGIENE,
                     AND THE
             MARYLAND NATIONAL GUARD
                   JUNE, 1975

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             REPORT ON JOHNSON POND

     WICOMICO 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
                 Con/all is, Oregon



                 Working Paper No. 356
          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                        1v
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                               9
  V. Literature Reviewed                             14
 VI. Appendices                                      15

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                                 11
                          FOREWORD
     The National Eutrophication Survey was initiated in 1972
in response to an Administration commitment to investigate the
nationwide threat of accelerated eutrophication to freshwater
lakes and reservoirs.
OBJECTIVES

     The Survey was designed to develop, in 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 nonpoint source pollution
abatement in 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)L water quality criteria/standards review
[§303(c)], clean lakes [§314(a,bj], 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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               75' 36'
75 34'
75^32'
	DELAWARE        (  /

   MARYLAND ~      Tj

                 \J
                                          JOHNSON      POND

                                           ® Tributary Sampling Site

                                           x Lake Sampling Site
                                           • Sewage Treatment Facility
                                                            jKm.
                                3828 —

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                               JOHNSON POND
                              STORE! NO. 2409

 I.   CONCLUSIONS
      A.   Trophic Condition*:
                Johnson Pond is considered eutrophic based upon field
           observations and analysis of survey data.  Rooted and floating
           aquatic vegetation was observed during the fall sampling with
           no visible algal blooms.  The water clarity was low and pre-
           sented  a green  turbid  appearance.    Phytoplankton  genera
           identified were mostly pollution-tolerant forms.  Chlorophyll a_
           levels ranged from a low of 2.6 micrograms/liter in the spring,
           to a high level of 69.1  micrograms/liter in the summer.  The
           algal assay control yield results indicate a high potential for
           primary productivity.  The pond is characterized by high con-
           centrations of inorganic nitrogen and dissolved phosphorus.
      B.   Rate-Limiting Nutrient:
                Algal assay results indicate that Johnson Pond was limited
           by available phosphorus levels.  Spikes with phosphorus, 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 dissolved
           phosphorus in sampled waters substantiates phosphorus limitation.
* See Appendix E

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C.   Nutrient Controllability:
     1.    Point sources -
               The mean annual phosphorus load from point sources was
          estimated to be 29.1% of the total load reaching Johnson
          Pond.  The city of Delmar wastewater treatment plant
          contributed 18.6% while Purdue Inc. contributed 10.5% of
          the total phosphorus load.
               The loading rate of 20.81 g/m2/yr is over nine times
          higher than the proposed "dangerous" levels by Vollenweider
          (in press) and it is over 18.5 times higher than the
          "permissible" proposed rate.  Total elimination of known
          point sources of phosphorus is not likely to result in a
          depression of loading values to below Vollenweider's
          "dangerous" levels.
     2.    Nonpoint sources -
               Nonpoint sources contributed 70.9% of the phosphorus
          loading reaching Johnson Pond.  Measured tributaries
          accounted for 66% of the total phosphorus load and the
          ungaged tributaries accounted for 4.9% of the load.
               The calculations of loading based upon available
          nutrient concentrations and flow data indicate a net
          export of nitrogen from Johnson Pond, suggesting that
          the tributary sampling was perhaps inadequate to depict
          actual loading and export rate for that nutrient.

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II.   LAKE AND DRAINAGE BASIN CHARACTERISTICS
          Lake and drainage basin characteristics are itemized below.
     Lake surface area, mean and maximum depths were 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 the
     mean flow of the outlet.
          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 Morphemetry:
          1.   Surface area:  0.42 km2.
          2.   Mean depth:   2.1 meters.
          3.   Maximum depth:   6.1 meters.
          4.   Volume:  0.884  x 106 m3.
          5.   Mean hydraulic  retention time:  5.4 days.
     B.   Tributary and Outlet (see Appendix A for flow data)
          1.   Tributaries  -
                                             Drainage       Mean flow
               Name                          area(km2)      (nr/sec)
               A(2) Wicomico River              67.9           1.4
               B(l) Brewington Branch           10.4           0.1
               C(l) Middle  Neck Branch          14.6           0.3
               Minor tributaries  &
                 immediate  drainage -            2.8           0.1
                         Totals                 95.7           1.9

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                                        Drainage       Mean flow
                                        area(km2)      (m3/sec)
     2.   Outlet - A(l) Wicomico River     96.1           1.9
C.   Precipitation:
     1.   Year of sampling:  115.7 centimeters.
     2.   Mean annual:  145.5 centimeters.

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III.  LAKE WATER QUALITY SUMMARY
          Johnson Pond 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 two 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 1.8 meters at Station 1, and the surface at Station 2. For
     a more detailed explanation of NES 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
     maximum depth for each site.   Results of the phytoplankton counts
     and  chlorophyll a^ determinations are included in III B.   Results
     of the limiting nutrient study are presented in III C.

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PARAMETER

TEMP (C)

DISS OXY (MG/L)

CNDCTVY (MCROMO)

PH (STAND UNITS)

TOT ALK 
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B.   Biological Characteristics:
     1.    Phytoplankton -
          Sampling
          Date
          04/10/73
          07/20/73
          09/28/73
Dominant
Genera
1.   Flagellates
2.   Fragilaria
3.   Melosira
4.   Synedra
5.   Scenedesmus
     Other genera
          Total
1.   Flagellates
2.   Microcystis
3.   Phormidium
4.   Oscillatoria
5.   Ankistrodesmus
     Other genera
          Total
1.   Flagellates
2.   Cryptomonas
3.   Melosira
4.   Microcystis
5.   Phormidium
     Other genera
          Total
Algal Units
per ml	
   403
    77
    76
    38
    19
   114
   727
   683
   518
   448
   424
   377
 2.257
 4,707
 2,168
 1,174
   569
   178
   178
   286
 4,553

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c.
     2.   Chlorophyll a_ -
          Sampling
          Date
          04/10/73
Station
Number
   1
   2
   1
   1
     07/20/73
     09/28/73
Limiting Nutrient Study:
1.   Autoclaved, filtered, and nutrient spiked -
                                                  Chlorophyll  a_
                                                  (micrograms/liter)
                                                         3.0
                                                         2.6
                                                        69.1
                                                        30.2
                           Ortho P
                           Cone, (mg/1)
        Inorganic N
        Cone, (mg/1)
                                                       Maximum yield
                                                       (mg/1-dry wt.)
Control
0.05 P
0.05 P + 1.0 N
1.00 N
0.044
0.094
0.094
0.044
0.97
0.97
1.97
1.97
10.7
20.3
40.0
9.5
Spike (mg/1)
Control
0.05 P
0.05 P + 1.0
1.00 N
Discussion -
     The results of the algal assay with Selenastrum capri-
corntum indicate that Johnson Pond was growth limited by
phosphorus at the time of sample analysis.  Simultaneous
addition of nitrogen and phosphorus spikes produced a
substantial increase in yield over the addition of phos-
phorus alone.  No growth response accompanied spikes of
nitrogen alone.
     The ratio of inorganic nitrogen to dissolved phosphorus
in the field samples was about 33:1 indicating the lake was
phosphorus limited at the time of assay sample collection.
     The high control yield of the test alga indicates high
potential primary productivity.

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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), except
     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
     determined by using a modification of the USGS computer program
     for calculating stream loadings.   Nutrient  loads  indicated for
     tributaries are those measured minus known  point  source loads,
     if any.
          Nutrient loadings for  unsampled "minor tributaries and
     immediate drainage" ("22" of USGS) were estimated by using the
     mean annual  concentrations  in Brewington  Branch at  Station B(l)
     and mean annual 22 flow.
          The operator of the Delmar  and  Purdue  Inc. (Salisbury)
     wastewater treatment plants provided monthly effluent samples
     and corresponding flow data.

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                                         10
A.   Waste Sources:

     1.   Known municipal -
                        Population                 Mean Flow      Receiving
                        Served       Treatment     (m3/d x ICr)   Water

                        2,500*       Trickling        0.950**      Wood Creek,
                                     filter                       Leonard Pond Run
     2.    Known industrial -

                                                   Mean Flow      Receiving
     Name               Product      Treatment     (nr/d x 10^)   Water

     Purdue Inc.         Soybean       Stabilization    3.312       Peggy Brook
     (Salisbury)***     plant,         pond
                        Feed mi 11,
                        Chicken
                        hatchery
       *Provided by the State of Maryland.
      **Estimated based upon 0.38 m3/capita/day.
     ***Corisists of an old plant and a new  plant.   New plant also serves a
        population of 150 employees.

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                                 11
B.   Annual Total Phosphorus Loading - Average Year:
     1.    Inputs -
                                                                 % of
          Source                                  kg  P/yr        total
          a.   Tributaries (nonpoint load) -
               A(2) Wicomico River                 5,205          59-6
               B(l) Brewington Branch                355           4-1
               C(l) Middle Neck Branch               200           2-3
          b.   Minor tributaries & immediate
               drainage (nonpoint load) -            425           4-9
          c.   Known municipal STP's - Delmar      1,630          18-6
          d.   Septic tanks* -                         5          <0.1
          e.   Known industrial -
               Purdue Inc. (Salisbury)               915          10-5
          f.   Direct precipitation** -           	5_          <0.1
                              Total                8>740         100.0
     2.    Outputs - A(l) Wicomico River            7,385
     3.    Net annual P  accumulation  -  1,355 kg.
 *Estimate based upon 22 lakeside residences.
**Estimated (see NES Working Paper No. 175).

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                                 12

C.   Annual Total Nitrogen Loading - Average Year:
     1.   Inputs -
                                                                 % of
          Source                                  kg N/yr        total
          a.   Tributaries (nonpoint load) -
               A(2) Hicomico River                113,055         78.1
               B(l) Brewington Branch               4,415          3.0
               C(l) Middle Neck  Branch             13,965          9.6
          b.   Minor tributaries & immediate
               drainage (nonpoint load) -           5,635          3.9
          c.   Known municipal STP's - Delmar       4,340          3.0
          d.   Septic tanks * -                        10         <0.1
          e.   Known industrial  -
               Purdue Inc. (Salisbury)              3,105          2.1
          f.   Direct precipitation** -               455          0.3
                              Total               144,980        100.0
     2.   Outputs - A(l) Wicomico River           161,405
     3.   Net annual N export*** -  16,425 kg.
  *Estimate based upon 22 lakeside residences.
 **Estimated (see NES Working Paper No. 175).
***Calculated export probably due to unknown sources and/or sampling error.

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                                13
D.   Mean Annual Nonpoint Nutrient Export by Subdrainage Area:
     Tributary                            kg P/km2/yr    kg N/km^/yr
     A(2) Wicomico River                       77           1,665
     B(l) Brewington Branch                    34             425
     C(l) Middle Neck Branch                   14             956

E.   Yearly Loading Rates:
          In the following table, the existing phosphorus loading
     rates are compared to those proposed by Vollenweider (in press).
     Essentially, his "dangerous" rate is the rate at which the
     receiving waters would become eutrophic or remain eutrophic; his
     "permissible" rate is that which would result in the receiving
     water remaining oligotrophic or becoming oligotrophic if mor-
     phometry permitted.  A mesotrophic rate would be considered one
     between "dangerous" and "permissible".
                          Total  Yearly
                     Phosphorus  Loading Rate
                         (grams/nr/year)
     Estimated loading rate for Johnson Pond                20.81
     Vollenweider's "dangerous" or eutrophic rate            2.24
     Vollenweider's "permissible" or oligotrophic rate       ~\ ."\2

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                                14
V.  LITERATURE REVIEWED

    U.S. Environmental Protection Agency.  1975.   "National
      Eutrophication Survey Methods 1974-1976."  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 2409
                   JOHNSON POND
                                            96.1
                                          MAR
                                                  APR
                                                          MAY
96.1
67.9
10.4
14.6
3.2
2.29
1.67
0.13
0.30
0.19
2.63
1.87
0.20
0.32
0.24
3.17
2.10
0.24
0.35
0.49
2.49
1.78
0.16
0.31
0.23
1.78
1.42
0.07
0.27
0.03
1.53
1.16
0.03
0.24
0.10
1.22
0.96
0.01
0.20
0.04
1.70
1.33
0.05
0.25
0.06
1.19
0.93
-0.01
0.20
0.05
1.36
1.02
0.02
0.21
0.11
1.56
1.19
• .04
• .24
• .•9
1.7S
1.42
0.07
0.27
0.03
l.«9
1.4*
• ••*
«.2«
• .14
     TOTAL DRAINAGE AREA OF LAKE(SO KM)

          SUB-DRAINAGE
TRIBUTARY  AREA(SO KM)    JAN     FEB
2409A1
2409A2
240981
2409C1
2409ZZ
                        TOTAL DRAINAGE AREA OF LAKE
                        SUM OF SUB-DRAINAGE AREAS

     MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)

TRIBUTARY   MONTH   YEAR    MEAN FLOW  DAY         FLOW  DAY

2409A1
NORMALIZED FLOWS(CMS)
  JUN     JUL     AUG
                                                                                          SEP
                                                                                                  OCT
                                                                                                          NOV
                                                                                                                  DEC
                                                                                                                         MEAN
2409A2
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
.93
.39
.19
.49
.61
.33
.19
2.32
2.92
2.18
2.07
2.63
.50
.05
.88
.78
.25
.02
.88
.67
.98
.61
.56
1.87
12
9
15
11
8
13
10
9
15
10
10
14
12
9
15
11
8
13
10
9
15
10
10
14
                                                           96.1
                                                           96.1
1.87
.22
.08
.10
.44
.33
1.39
2.41
1.93
1.87
1.64
2.75
1.44
0.91
0.79
0.79
1.10
.02
.05
.73
.50
.47
1.30
1.90









24
24










24
24

                                                                   SUMMARY
              TOTAL FtOW IN
              TOTAL FLOW OUT
22.71
22.71
                                                                     FLOW  DAY
                                                                                       FLOW
                                                                     2.18
                                                                     2.27
                                                                     1.61
                                                                     1.64

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                                   TRIBUTARY FLOW INFORMATION FOR MARYLAND
                                                                              9/16/75
LAKE CODE 2409
       JOHNSON POND
     MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY

2409B1
2409C1
2409ZZ
MONTH   YEAR
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
MEAN FLOW  DAY
0.08
0.02
0.01
0.16
0.04
0.02
0.01
0.14
0.22
0.12
0.10
0.20
0.28
0.21
0.19
0.31
0.24
0.21
0.19
0.31
0.34
0.28
0.28
0.31
0.06
0.10
0.11
0.24
0.08
0.08
0.11
0.20
0.37
0.16
0.12
0.25
12
9
15
11
8
13
10
9
15
10
10
14
12
9
15
11
8
13
10
9
15
10
10
14
12
9
15
11
8
13
10
9
15
10
10
14
                                       FLOW  DAY
                                         FLOW  DAY
                                                                           FLOW
0.08
0.01
0.01
0.01
0.03
0.02
0.02
0.15
0.08
0.08
0.05
0.20
0.27
0.20
0.18
0.18
0.22
0.21
0.22
0.31
0.28
0.27
0.25
0.31
0.08
0.10
0.10
0.12
0.09
0.08
0.10
0.22
0.06
0.05
0.04
0.34









24
24










24
24










24
24

                                                                     0.12
                                                                     0.13
                                                                     0.28
                                                                     0.31
                                                                     0.16
                                                                     0.18

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        APPENDIX B





PHYSICAL and CHEMICAL DATA

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STORET RETRIEVAL DATE 75/09/16
                                                                  240901
                                                                 38 22 38.0 075 36 05.0
                                                                 JOHNSON PONO
                                                                 24045   MARYLAND

DATE
FROM
TO
73/04/10

73/07/20

73/09/28


TIME DEPTH
or
DAY FEET
15 00 0000
15 00 0006
15 25 0000
15 25 0005
14 20 0000
14 20 0006
00010
WATER
TEMP
CENT
13.4
13.2
27.4
24.6
20.0
19.2
                                00300     00077
                                 DO      TRANSP   a
                                         SECCHI   FIELD
                                MG/L     INCHES   MI
                                   8.9
                                  16.0
                                  11.5
                                   8.2
                                   7.8
30

35

72
                                                                 11EPALES
                                                                 3
                                        2111202
                                       0010 FEET
DEPTH
94
TVY

MHO
85
85
110
94
74
72
00400
PH

SU
8.40
8.40
9.90
9.00
7.40
6.90
00410
T ALK
CAC03
MG/L
10
10
12
15
17
16
00610
NH3-N
TOTAL
MG/L
0.150
0.130
0.050
0.060
0.100
0.080
00625
TOT KJEL
N
MG/L
0.800
0.600
1.9*0
0.900
1.300
0.500
00630
N02LN03
N-TOTAL
MG/L
0.800
1.100
0.380
0.730
1.450
1.680
00671
PHOS-OIS
ORTHO
MG/L P
0.040
0.040
0.011
0.024
0.033
0.053
                      00665     32217
  DATE   TIME DEPTH PHOS-TOT  CHLRPHYL
  FROM    OF                     A
   TO    DAY  FEET   MG/L P     UG/L

73/04/10 15 00 0000    0.095       3.0
         15 00 0006    0.093
73/07/20 15 25 0000    0.121      69.1
         15 25 0005    0.110
73/09/28 14 20 0000    0.098      30.2
         14 20 0006    0.098

-------
STORET RETRIEVAL DATE 75/09/16
                                                                  240902
                                                                 38 23 12.•  075  35 45.0
                                                                 JOHNSON POND
                                                                 24045   MARYLAND
  DATE   TIME DEPTH
  FROM    OF
   TO    DAY  FEET

73/04/10 15 20 0000
 00010
MATER
 TEMP
 CENT

   13.5
00340     00077     00094
 DO      TRANSP   CNOUCTVY
         SECCHI   FIELD
MG/L     INCHES   M1CROMHO
   8.3
30
85
                                                                 HEP ALES
                                                                 3
                                                                 2111202
                                                                0005 FEET
                                                                DEPTH
00400
 PH

 SU

  8.50
                          00410
                         T ALK
                         CACO3
                          HG/L
                                                                                  00410
10K
TOTAL
 M6/L

  0.100
                00625     0*630
              TOT KJCL  MNRN03
                 N      N-TOTAt.
                MG/L      N6/L .
                                                        00*71
                                                      mo»*is
                                                       QVTHft
0.700
••TOO
                      0*465     32217
  DATE   TIME DEPTH PHOS-TOT  CHLRPHYL
  FROM    OF                     A
   TO    DAY  FEET   MG/L P     UG/L
73/04/10 15 20 0000
  0.076
   2.6
                           K VALUE KNOWN TO BE
                           LESS THAN INDICATED

-------
       APPENDIX C





TRIBUTARY and WASTEWATER



  TREATMENT PLANT DATA

-------
STORE! RETRIEVAL DATE 75/09/16
                                                                  2409A1
                                                                 38 22 18.0 075 36 12.0
                                                                 WILCOMICO RIVER
                                                                 24005   7.5 SALISBURY
                                                                 O/JOHNSON POND
                                                                 BRD6 BTWN JOHNSON PD AND N PRONG
                                                                 11EPALES          i   2111204
                                                                 4                   0000 FEET  DEPTH

DATE
FROM
TO
73/05/12
73/06/09
73/07/15
73/08/11
73/09/08
73/10/13
73/11/10
73/12/09
74/01/15
74/02/10
74/02/24
74/03/10
74/03/24
74/04/14
74/05/18

TIME DEPTH
OF
DAY FEET
11 30
09 05
13 55
11 00
14 30
10 00

14 10
13 40
13 21
11 00
13 30
13 00
12 50
14 00
00630
N02&N03
N-TOTAL
MG/L
1.400
1.040
0.340
1.000
0.510
1.420
1.420
1.600
1.500
2.100
1.850
1.520
1.500
1.360
0.970
00625
TOT KJEL
N
MG/L
1.050
0.980
3.500

1.100
1.300
1.150
0.400
0.700
3.200
1.600
0.600
0.900
0.900
1.200
00610
NH3-N
TOTAL
MG/L
0.025
0.011
1.300
1.000
0.015
0.050
0.163
0.032
0.108
0.140
0.110
0.010
0.025
0.030
0.155
00671
PHOS-OIS
ORTHO
MG/L P
0.046
0.050
0.635
0.550

0.058
0.063
0.072
0.048
0.070
0.060
0.030
0.030
0.050
0.032
00665
PHOS-TOT

MG/L P
0.115
0.100
1.350
1.250
0.110
0.200
0.110
0.120
0.090
0.820
0.170
0.085
0.140
0.070
0.110

-------
STORET RETRIEVAL DATE 75/09/16
                                                                  2409A2
                                                                 38 24 32.0 075 35 30.0
                                                                 WILCOMICO RIVER
                                                                 24      7.5 DELMAR
                                                                 I/JOHNSON POND
                                                                 NAYLOR MILL RD BRDG BLOW NAYLORS POND
                                                                 11EPALES             2111204
                                                                 4                   0000 FEET  DEPTH
DATE
FROM
TO
73/05/12
73/06/09
73/07/15
73/08/11
73/09/08
73/10/13
73/11/10
73/12/09
74/01/15
74/02/10
74/02/24
74/03/10
74/03/24
74/04/14
74/05/18
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
10 35
08 40
13 25
10 30
14 05
10 15

14 40
11 10
14 00
12 00
12 45
14 10
12 10
13 20
MG/L
1.950
2.300
2.200
2.300
1.660
2.200
4.200
1.850
1.760
2.270
1.960
2.200
1.680
1.700
2.000
MG/L
0.500
0.500
0.350
0.390
0.710
0.630
2.300
0.700
0.500
0.700
0.600
1.200
0.600
0.600
0.500
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.090
0.075
0.040
0.036
0.085
0.110
0.294
0.148
0.108
0.185
0.090
0.220
0.120
0.065
0.080
MG/L P
0.088
0.150
0.176
0.210
0.077
0.138

0.136
0.044
0.065
0.060
0.110
0.052
0.055
0.130
MG/L P
0.140
0.190
0.200
0.240
0.135
0.175

0.220
0.065
0.120
0.100
0.250
0.092
0.075
0.170

-------
STORE! RETRIEVAL DATE 75/09/16
                                                                  2409B1
                                                                 38 23 35.0 075 34 30.0
                                                                 BREWINGTON BRANCH
                                                                 24      7.5 DELMAR
                                                                 T/JOHNSON POND
                                                                 US HWY 13 BRDG N OF JCT WITH ZION RO
                                                                 11EPALES             2111204
                                                                 4                   0000 FEET  DEPTH

DATE
FROM
TO
73/05/12
73/06/09
73/07/15
73/08/11
73/09/08
73/10/13
73/11/10
73/12/09
74/01/15
74/02/10
74/02/24
74/03/10
74/03/24
74/04/14
74/05/18

TIME DEPTH
OF
DAY FEET
11 00
08 50
13 35
10 38
14 50
11 05

14 20
13 30
13 40
11 20
13 10
13 30
12 40
13 00
00630
N02&.N03
N-TOTAL
MG/L
0.500
0.300
0.440
0.085
0.410
0.350
0.140
0.264
0.490
0.860
0.516
0.470
0.216
0.232
1.520
00625
TOT KJEL
N
MG/L
1.150
1.350
4.800
1.680
1.320
0.730
0.650
0.700
0.400
0.800
0.500
0.700
0.800
1.000
4.200
00610
NH3-N
TOTAL
MG/L
0.340
0.470
0.940
0.440
0.230
0.147
0.147
0.076
0.036
0.115
0.030
0.095
0.035
0.052
0.165
00671
PHOS-DIS
ORTHO
MG/L P
0.058
0.075
0.176
0.092
0.044
0.040
0.023
0.060
0.020
0.025
0.015
0.025
0.025
0.017
0.105
00665
PHOS-TOT

MG/L P
0.150
0.185
0.310
0.300
0.130
0.100
0.075
0.200
0.035
0.105
0.050
0.055
0.075
0.035
0.600

-------
STORE! RETRIEVAL DATE 75/09/16
DATE
FROM
TO
73/05/12
73/06/09
73/07/15
73/08/11
73/09/08
73/10/13
73/11/10
73/12/09
74/01/15
74/02/10
74/02/24
74/03/10
74/03/24
74/04/14
74/05/18
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET MG/L
11
08
13
10
14
10

14
11
14
11
13
13
13
13
10
55
40 (
46 (
10
35

30
.600
.060
.780
.700
.540
.610
.500
.340
20 1.800
00 2.400
40 1.700
20 1.760
45 1.600
00 1.600
00 0.172
MG/L
0.820
0.890
0.840
0.460
0.355
0.750
0.650
0.300
0.400
0.200
0.600
0.400
0.500
0.600
4.600
US HMY 1
11EPALES
4
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0
0
0
0
0
0
0
0
0
.230
.110
.079
.132
.050
.027
.095
.036
.100
0.025
0
0
0
0
1
.030
.030
.040
.060
.100
MG/L
0.
0.
P
160
130
0.085
0.
0.
0.
0.
0.
0.
105
066
054
063
128
088
0*055
0.
0.
0.
0.
0.
105
075
095
100
220
MG/L
0
0
0
0
0
0
0
0
0
•
•
•
•
•
•
•
•
•
P
240
190
130
148
110
085
110
175
115
0.080
0
0
0
0
0
•
•
•
•
•
150
105
145
100
530
                                                                  2409C1
                                                                 38 23 00.0 075 35 00.0
                                                                 MIDDLE NECK BRANCH
                                                                 24      7.5 DELMAR
                                                                 T/JOHNSON POND
                                                                        13 8RDG .5MI  S OF JCT WTH ZION RD
                                                                                      2111204
                                                                                     0000 FEET  DEPTH

-------
STORE! RETRIEVAL DATE 75/09/16
                                                                  240930           PD240930     POOOOOO*
                                                                 38 22 55.0  075 32 02.0
                                                                 PERDUE INC. (SALISBURY)
                                                                 24045   WICOMICO COUNTY
                                                                 T/JOHNSONS  POND
                                                                 PEGGY BROOK
                                                                 11EPALES             2141204
                                                                 4                   0000  FEET   DEPTH
DATE
FROM
TO
73/06/01
73/08/02
73/09/02
73/10/04
73/11/02
74/C1/10
74/02/01
74/03/07
74/08/23
74/09/18
74/10/20
74/11/22
74/12/12
74/12/31
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
12
13
13
10
14
16
09
10






30
30
30
30
00
30
30
00






MG/L
0.
1.
1.
1.
0.
2.
0.
1.
0.
3.
4.
3.
0.
0.
880
400
900
680
780
240
830
520
040
000
000
680
720
560
MG/L
0.750
2.100
0.120
1.400
0.900
0.620
1.400
1.500
1.500
1.025
l.OOOK
3.200
4.650
6.000
00610 00671 00665
NH3-N PHOS-DIS PHOS-TOT
TOTAL ORTHO
MG/L
0.315
0.217

0.078
0.390
0.380
U.520
0.245
0.050K
0.068
0.050K
0.360
0.480
0.640
MG/L P
0.220
0.197
0.100
0.270
0.210
0.450
0.500
1.125
0.050
0.075
0.130
0.720
4.000
4.500
50051 50053
FLOW CONDUIT
RATE FLOW-MGD
MG/L P INST
0.350
0.480
0.212
0.510
0.570
0.910
0.800
1.150
1.700
2.700

0.800
4.550
5.100
0
0
0
0
0
0
0
0
0
0




MGD MONTHLY
.875
.875
.875
.875
.875
.875
.875
.875
.875
.875




0.875
0.875
0.875
0.875
0.875
0.875
0.875
0.875
0.875
0.875




                        K  VALUE  KNOWN  TO  BE
                        LESS  THAN  INDICATED

-------
STORE! RETRIEVAL DATE 75/09/16
                                                                  340931           TF240931     P002500
                                                                 38 25 22.0 075 34 15.0
                                                                 OELMAR
                                                                 24      MICOMICO COUNTY
                                                                 T/JOHNSONS POND
                                                                 HOOD CREEK/LEONARD POND RUN
                                                                 11EPALES             2141204
                                                                 4                   0000 FEET  DEPTH
DATE
FROM
TO
73/06/06
73/07/09
73/08/06
73/09/04
73/10/04
73/11/05
73/12/03
74/01/04
74/02/04
74/03/04
74/04/02
74/05/02
74/06/04
00630
TIME DEPTH N02&N03
OF N-TOTAL
DAY FEET
12
10
12
09
09
10
09
09
10
09
09
08
11
00
00
00
00
00
00
00
00
00
00
00
00
00
MG/L
0.
1.

1.
1.
1.
3.
2.
1.
2.
1.
1.
0.
940
380

480
050
050
100
900
840
000
120
600
880
00625
TOT KJEL
N
MG/L
15.000
12.000

4.570
9.000
22.000
19.500
3.700
4.200
6.400
7.500
10.000
17.000
00610 00671
NH3-N PHOS-DIS
TOTAL ORTHO
MG/L
9.900
6.200


6.900
11.800
19.000
1.520
2.600
3.150
2.700
5.000
7.800
MG/L P
4.140
4.500


3.700
6.900
7.100
0.750
1.120
1.600
1.750
2.500
4.100
00665
PHOS-TOT
50051 50053
FLOW CONDUIT
RATE FLOW-MGO
MG/L P INST
5.250
5.200


4.600
11.500
8.250
1.300
1.550
2.300
3.000
3.400
5.400
0
0
0
0
0
0
0
0
0
0
0
0
0
MGD MONTHLY
.350
.300
.350
.350
.300
.300
.350
.300
.350
.350
.350
.350
.350
0.350
0.300
0.350
0.350
0.325
0.350
0.325
0.300
0.350
0.350
0.350
0.350
0.350

-------
    APPENDIX D





CONVERSION FACTORS

-------
                CONVERSION FACTORS

Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
                         -4
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  2408       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
INORC 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 00
14.SOO
14.900
14.800
7.200
MEDIAN
OISS ORTHO P
0.005
0.006
0.007
0.040

-------
PERCENT OF LAKES WITH HIGHER VACUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE  LAKE NAME
2402  DEEP CREEK LAKE
2*03  LIBERTY RESERVOIR
2*08  LOCH RAVEN RESERVOIR
2*09  JOHNSON POND
MEDIAN
TOTAL P
100 (
67 (
33 (
0 (
3)
2)
1)
0)
MEDIAN
INORG N
100 (
0 (
33 (
67 (
3)
0)
1)
2)
500-
MEAN SEC
100 (
67 (
33 <
0 <
3)
2)
1)
0)
MEAN
CHLORA
100 (
67 I
33 <
0 (
3)
2)
1)
0)
15-
MIN DO
50 (
0 (
50 <
100 (
1)
0)
1)
3)
MEDIAN
DISS OOTHO P
100 (
67 (
33 (
0 (
3)
2)
1)
0)
IMDCX
NO
5M
2*8
215
1*7

-------