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
697.032
-------
REPORT
ON
LAKE WftCCAMAW
COLUMBUS COUNTY
mm CAROLINA
EPA REGION IV
WORKING PAPER No, 391
WITH THE COOPERATION OF THE
NORTH CAROLINA DEPARTMENT OF NATURAL AND ECONOMIC RESOURCES
AND THE
NORTH CAROLINA NATIONAL GUARD
JUNE, 1975
789
-------
CONTENTS
Page
Foreword ii
List of North Carolina Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
III. Lake Water Quality Sumnary 4
IV. Nutrient Loadings 8
V. Literature Reviewed 12
VI. Appendices 13
-------
ii
FOREWORD
The National Eutrophication Survey was Initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to fresh water 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 non-point
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:
a0 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 water-
shed 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 planning [§303(e)l, 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
fresh water lakes. Likewise, multivarlate 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.
ACKNOWLEDGMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U.S. Environmental Protection Agency)
expresses sincere appreciation to the North Carolina Department
of Natural and Economic Resources for professional involvement
and to the North Carolina National Guard for conducting the
tributary sampling phase of the Survey.
Lewis R. Martin, Director of the Division of Environmental
Management; Darwin L. Coburn, Chief of the Water Quality Section;
and Julian R. Taylor, Supervisor of the Monitoring Program Unit;
provided invaluable lake documentation and counsel during the
Survey, reviewed the preliminary reports, and provided critiques
most useful in the preparation of this Working Paper series.
Major General William M. Buck, formerly Adjutant General of
North Carolina, and Project Officer Colonel Arthur J. Bouchard,
who directed the volunteer efforts of the North Carolina National
Guardsmen, are also gratefully acknowledged for their assistance
to the Survey.
-------
IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF NORTH CAROLINA
LAKE NAME
Badin
Blewett Falls
Chatuge
Fontana
Hickory
High Rock
Hiwassee
James
John H. Kerr (Nut Bush Creek)
Junaluska
Lookout Shoals
Mountain Island
Norman
Rhodhiss
Santeetlah
Tillery
Waccamaw
Waterville
Wylie
COUNTY
Montgomery, Stanly
Anson, Richmond
Clay, NC; Towns, GA
Graham, Swain
Alexander, Caldwell,
Catawba
Davidson, Rowan
Cherokee
Burke, McDowell
Granville, Vance, Warren,
NC; Halifax, Mecklenburg,
VA
Haywood
Alexander, Catawba, Iredell
Gaston, Mecklenburg
Catawba, Iredell, Lincoln,
Mecklenburg
Burke, Caldwell
Graham
Montgomery, Stanly
Columbus
Haywood
Gaston, Mecklenburg, NC;
York, SC
-------
LAKE
WACCAMAW
Tributary Sampling Site
X Lake Sampling Site
-------
LAKE WACCAMAW
STORE! NO. 3719
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Lake Waccamaw 1s mesotrophlc,
although the lake is quite shallow (max. depth of 3.3 meters),
and total phosphorus concentrations were relatively high during
the March sampling (0.020-0.063 tng/1). Using a relative trophic
index combining six parameters, Lake Waccamaw ranked first 1n
overall trophic quality among the 16 North Carolina lakes
sampled in 1973*; however, that may not necessarily be true.
Lake Waccamaw is surrounded by a swampy area and may simply
be a dystrophic lake in which primary production is suppressed
by lack of light penetration due to humic and tannic acids in
the water.
Survey limnologists did not observe any surface algal
scums; however, higher aquatic vegetation was noted along the
shoreline.
B. Rate-Limiting Nutrient:
The algal assay results and inorganic nitrogen to dissolved
orthophosphorus ratios indicate Lake Waccamaw was phosphorus
limited in March and July. However, the lake data indicate
nitrogen limitation in September.
* See Appendix A.
-------
C. Nutrient Controllability:
1. Point sources—During the sampling year, the phos-
phorus contribution of point sources amounted to 5.7% of the
total phosphorus load reaching Lake Waccamaw and consisted
entirely of estimated loads from septic tanks serving dwellings
close to the lake. The present loading rate of 0.06 g/m2/yr
is well below the rate proposed by Vollenweider (Vollenweider
and Dillon, 1974) as a eutrophic rate (see page 11).
2. Non-point sources—The phosphorus load from non-point
sources accounted for 94.3% of the total reaching Lake Waccamaw.
Big Creek contributed 58.4%, and the ungaged tributaries were
estimated to have contributed 6.7% of the total. Due to the
large surface area of this lake, direct precipitation is esti-
mated to have accounted for 29.2% of the total phosphorus load.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS*
_f__i_
A. Lake Morphometry :
1. Surface area: 36.17 kilometers2.
2. Mean depth: 1.5 meters (estimated).
3. Maximum depth: 3.3 meters.
4. Volume: 54.3 x 106 m3 (estimated).
5. Mean hydraulic retention time: 242 days (estimated).
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Big Creek 194.2 2.0
Minor tributaries &
immediate drainage - 20.8 0.6
Totals 215.0 2.6
2. Outlet -
Waccamaw River 251.2** 2.6
C. Precipitation***:
1. Year of sampling: 123.0 centimeters.
2. Mean annual: 117.9 centimeters.
t Table of metric conversions—Appendix B.
tt Park, 1974.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of lake.
*** See Working Paper No. 175.
-------
III. LAKE WATER QUALITY SUMMARY
Lake Waccamaw 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, a single depth-integrated (near bot-
tom to surface) sample was composited from the two stations for phyto-
plankton identification and enumeration; and during the first visit,
a single 18.9-liter depth-integrated sample was composited for algal
assays. Also each time, a depth-integrated sample was collected
from each of the stations for chlorophyll a_ analysis. The maximum
depths sampled were 1.5 meters at station 1 and 1.5 meters at station
2.
The lake sampling results are presented in full in Appendix D and
are summarized in the following table.
-------
A. SUflMArtY OK PHYSICAL ANO CHEMICAL CHAWACTtKliTICS FOH LAKt HACCAMAW
CODE 3719
1ST SAMPLING I 3/22/73)
? si res
2MU SAMPLING < 7/ b/73»
£ snes
SAMPLING ( 9/20/73)
2 SITES
PAMAMETE* K«NOE MtAN MtJlAN KANGE
TEMP 1C)
IJ1SS OXY (MG/L)
CNOCTvr (MCHOMO)
PH (S1ANLJ UNITS)
TOT «LK (MG/L>
TOT P (MG/L)
OKThO P (MG/L)
N02-N03 (MG/L)
AHHONIA (MG/L)
KJEL N (Mb/L)
INCWG N (MG/L)
TOTAL N (MG/L)
ChLto-'YL A (UG/D
SiCCH! (METERS)
13.6 - 14.5
H.tt - 9.6
SS. - 55.
6.7 - 7.4
10. - 10.
S.020 - 0.063
0.003 - 0.004
0.050 - 0.06'j
(i.Otu - 0.070
d.300 - 0.500
c-.i?a - o.i3o
O.JbO - J.560
4.J - 6.2
1.0 - 1.0
14.0
9.0
3b.
7.0
1C.
0.041
0.004
0.055
0.06/
0.4M
0.122
O.bOS
= .2
1.6
14.0
9.u
5^,
6.T
10.
0.041
0.004
0.055
0.070
0.500
0.120
0.5bS
S.2
1.0
29.4
b.6
60.
7.1
10.
0.014
0.003
0.040
0.070
0.600
0.120
0.640
2.0
0.3
- JO. 2
b.B
65.
1.2
12.
- 0.019
- 0.005
- 0.060
- 0.080
- 0.700
- 0.140
- 0.750
2.-J
1.0
MEAN
29. b
6.7
63.
7.2
11.
0.016
0.004
0.052
0.077
0.625
0, 130
0.677
2.4
1.1
MEOIAN
29.8
6.7
63.
7.2
12.
0.016
0.004
0.055
o.oeo
0.600
0.130
o.faeo
2.4
1.1
MANGE
PS.rt
t>.2
63.
6.7
10.
0.014
0.010
0.020
0.040
0.600
0.060
0.620
3.0
1.2
- 26. 2
7.d
66.
7.2
13.
- 0.019
- 0.013
- 0.040
- 0.070
- 1.200
- 0.110
- 1.210
3.1
1.4
MEAN
26.0
6.S
65.
6.V
12.
0.016
0.011
0.027
0.052
0.875
o.oao
0.902
3.0
1.3
MEDIAN
26.0
6.6
65.
6.9
12.
0.015
0.010
0.025
0.050
o.eso
0.075
0.87!J
3.0
1.3
-------
B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
03/22/73
07/05/73
09/20/73
Dominant
Genera
1. Melosira
2. Synedra
3. Dinobryon
4. Cryptomonas
5. Lyngbya
Other genera
Total
1. Aphanocapsa
2. Microcystis
3. Chlorella
4. Lyngbya
5. Flagellates
Other genera
Total
1. Gomphosphaeria
2. Flagellates
3. Dinoflagellates
4. Cosmarium
5. Melosira
Other genera
Algal units
per ml
1,932
927
524
302
262
101
502
2,618
233
198
90
72
54
161
Total
801
-------
Sampling
Date
03/22/73
07/05/73
09/20/73
Station
Number
01
02
01
02
01
02
2. Chlorophyll a_ -
Chlorophyll a.
(yg/1)
4.3
6.2
2.9
2.0
3.1
3.0
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N Maximum yield
Spike (mg/1) Cone, (mg/1) Cone, (mg/1) (mg/1-dry wt.)
Control
0.050 P
0.050 P + 1.0 N
1.0 N
2. Discussion -
The algal assay results should be considered with some
qualifications because the inorganic nitrogen concentration
in the assay sample was approximately 50% of the concentra-
tion observed in the lake. Nevertheless, the assay results
indicate that the lake was phosphorus limited, and this was
substantiated by the 30 to 1 inorganic nitrogen to ortho-
phosphorus ratio as determined by lake sampling. The July
N/P ratio was 32/1, also indicating phosphorus limitation.
However, in September, the N/P ratio was 7/1 indicating
nitrogen limitation at that time.
0.008
0.058
0.058
0.008
0.064
0.064
1.064
1.064
0.1
1.0
17.4
0.1
-------
8
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the North Carolina
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 January and February when two samples were col-
lected. Sampling was begun in March, 1973, and was completed in Febru-
ary, 1974.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the North Carolina District Office of the U.S. Geological Survey for
the tributary sites nearest the lake.
In this report, nutrient loads for sampled tributaries were deter-
mined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. Nutrient loads for unsam-
pled "minor tributaries and immediate drainage" ("ZZ" of U.S.G.S.) were
estimated using the nutrient loads, in kg/km2/year, at station A-l and
multiplying by the ZZ area in km2.
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
* See Working Paper No. 175.
-------
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Big Creek 1,270 58.4
b. Minor tributaries & immediate
drainage (non-point load) - 145 6.7
c. Known municipal STP's - None
d. Septic tanks* - 125 5.7
e. Known industrial - None
f. Direct precipitation** - 635 29.2
Total 2.175- 100.0
2. Outputs -
Lake outlet - Waccamaw River 1,270
3. Net annual P accumulation - 905 kg.
* Estimate based on 69 lakeshore residences and the town of Lake
Waccamaw (pop. 924); see Working Paper No. 175.
** See Working Paper No. 175.
-------
10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ X of
Source yr total
a. Tributaries (non-point load) -
Big Creek 53,500 52.0
b. Minor tributaries & immediate
drainage (non-point load) - 5,720 5.6
c. Known municipal STP's - None
d. Septic tanks* - 4,675 4.5
e. Known industrial - None
f. Direct precipitation** - 39.050 37.9
Total 102,945 100.0
2. Outputs -
Lake outlet - Waccamaw River 60,215
3. Net annual N accumulation - 42,730 kg.
* Estimate based on 69 lakeshore residences and the town of Lake
Waccamaw (pop. 924); see Working Paper No. 175.
** See Working Paper No. 175.
-------
11
D. Mean Annual Non-point Nutrient Export by Subdralnage Area:
Tributary kg P/km2/yr kg N/km2/yr
Big Creek 7 275
E. Yearly Loading Rates:
In the following table, the existing phosphorus loading
rates are compared to those proposed by Vollenweider (Vollen-
weider and Dillon, 1974). Essentially, his "dangerous" rate
is the rate at which the receiving water would become eutrophic
or remain eutrophic; his "permissible" rate is that which would
result in the receiving water remaining ollgotrophic or becoming
oligotrophic if morphometry permitted. A mesotrophic rate would
be considered one between "dangerous" and "permissible".
Note that Vollenweider's model may not be applicable to
water bodies with short hydraulic retention times.
Total Phosphorus Total Nitrogen
Total Accumulated Total Accumulated
grams/m2/yr 0.06 0.03 2.8 1.2
Vollenweider loading rates for phosphorus
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Lake Waccamaw:
"Dangerous" (eutrophic rate) 0.30
"Permissible" (ollgotrophic rate) 0.15
-------
12
V. LITERATURE REVIEWED
Park, David, 1974. Personal communication (lake morphometry).
NC Dept. of Nat. & Econ. Resources, Raleigh.
Vollenweider, R. A., and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Publ. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
Weiss, Charles M., 1972. A proposal to the Water Resources
Research Institute of the University of North Carolina. The
trophic state of North Carolina lakes, covering the period
from July 1, 1972, to June 30, 1973. U. of North Carolina,
Chapel Hill.
-------
13
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME
1 3719
2 3716
3 3711
4 3707
5 3704
6 3713
7 3708
8 3710
9 3715
U 3705
11 3717
12 3709
13 3702
14 3718
15 3701
16 3706
LAKE WACCAMAW
SANTEELAH LAKE
MOUNTAIN ISLAND LAKE
HIWASSEE LAKE
FONTANA LAKE
LAKE NORMAN
LAKE JAMES
LOOKOUT SHOALS
RHODHISS LAKE
LAKE HICKORY
LAKE TILLERY
LAKE JUNALUSKA
8LEWETT FALLSuLAKE
WATERVILLE RESERVOIR
BADIN LAKE
HIGH ROCK LAKE
INDEX NO
534
446
419
414
392
346
334
327
296
283
246
220
200
140
124
76
-------
LAKE.DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
3701 BADIN LAKE
3702 BLEWETT FALLS LAKE
3704 FONTANA LAKE
3705 LAKE HICKORY
3706 HIGH ROCK LAKE
3707 HltfASSEE LAKE
3708 LAKE JAMES
3709 LAKE JUNALUSKA
3710 LOOKOUT SHOALS
3711 MOUNTAIN ISLAND LAKE
3713 LAKE NORMAN
3715 RHODHISS LAKE
3716 SANTEELAH LAKE
3717 LAKE TILLERY
3718 WATERVILLE RESERVOIR
3719 LAKE WACCAMAW
MEDIAN
TOTAL P
0.042
0.090
0.011
0.047
0.090
G.015
0.020
0.031
0.026
0.018
0.019
0.061
0.011
0.040
0.103
0.018
MEDIAN
INORG N
0.680
0.655
0.550
0.320
0.580
0.240
0.160
0.560
0.370
0,270
0.330
0.305
0.160
0.470
0.860
0.120
500-
MEAN SEC
466.750
476.889
392.650
461.000
477.454
420,555
428.866
462.000
459.167
462.000
446.667
462.111
366.400
468.600
468.333
455.667
MEAN
CHLORA
7.190
4.167
3.438
7.275
14.283
5.678
7.660
7.233
4.200
5.580
5.807
3.578
5.360
6.827
3.817
3.583
15-
MIN 00
14.900
10.800
14.900
13.400
14.800
14.200
14.800
14.200
13.800
12.600
14.800
13.600
14.800
13.600
14.400
9.600
MEOI*
DISS ORTt-
0.012
0.034
0.007
0*008
0.017
0.007
0.006
0.009
0.008
0.005
0.005
0.019
0.006
0.008
0.041
0.004
-------
PERCENT or LAKES IJITH HIGHER VALUES INUMBEH OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
3701 BAOIN LAKE
3702 BLEWETT FALLS LAKE
3704 FONTANA LAKE
3705 LAKE HICKORY
3706 HIGH ROCK LAKE
3707 HIWASSEE LAKE
3708 LAKE JAMES
3709 LAKE JUNALUSKA
3710 LOOKOUT SHOALS
3711 MOUNTAIN ISLAND LAKE
3713 LAKE NORMAN
3715 RHODHISS LAKE
3716 SANTEELAH LAKE
3717 LAKE TILLERY
3718 WATERVILLE RESERVOIR
3719 LAKE V;ACCAHAW
MEDIAN
TOTAL P
33
7
100
27
13
87
60
47
53
73
67
20
93
40
0
80
( 5)
( 1)
< 15)
( 4)
( 2)
( 13)
< 9>
( 7)
( ft)
( 11)
( 10)
( 3)
C 14)
< 6)
( 0)
I 12)
MEDIAN
INOKG N
7 (
13 <
33 <
60 (
20 <
80 (
87 1
27 <
47 1
73 1
53 <
67 i
93 i
40 I
0 <
100
D
2)
5)
: 9)
3)
12)
: 13)
: 4)
; 7)
[ ID
[ 8)
1 10)
! 14)
I 6)
( 0)
I 15)
500-
MEAM SEC
27 <
7 (
93 (
53 (
0 (
87 <
80 (
43 t
60 (
43 (
73 (
33 (
100 {
13 (
20 <
67 (
4)
1)
14)
a>
0).
13)
12)
6)
9)
6)
11>
5)
IS)
2)
3)
10)
MEAN
CHLORA
27 (
73 (
100 (
13 (
0 (
47 (
7 (
20 (
67 <
53 I
40 (
93 <
60 <
33 (
80 (
87 (
4)
11)
IS)
2)
0)
7)
1)
3)
10)
a>
6)
14>
9)
5)
12)
13)
15-
MIN 00
3 <
93 <
3 (
80 I
23 (
50 I
23 (
50 1
60 1
87 1
23 i
70 i
23
70
40
100
0)
14)
: o>
: 12)
2)
! 7)
; 2>
[ 7)
[ 9)
I 13)
I 2)
t 10)
( 2)
( 10)
( 6)
( 15)
MEDIAN
DISS OKTHO P
27 (
7 <
63 <
50 (
20 (
63 <
77 (
33 1
40 1
90 1
90 1
13 (
77 *
50 i
0 •
100
4)
1)
9)
. 7)
3)
9)
: 11)
; 5)
1 6)
: 13)
I 13)
! 2)
1 11)
! 7)
( 0)
( 15)
INDEX
NO
124
200
392
283
76
414
334
220
327
419
346
296
446
246
140
534
-------
APPENDIX B
CONVERSIONS 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 C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLO* INFORMATION FOR NORTH CAROLINA
10/21/TS
TRIBUTARY
3719A1
3719B1
3719ZZ
DRAINAGE AREA OF LAKEtSQ MI) 97.00
SUB-DRAINAGE
AREA (SO Ml) JAN
75.00
97.00
32.00
85.00
110.00
25.00
FEU
120.00
155.00
3S.OO
MAR
1*5.00
188.00
43.00
APR
100.00
130.00
30.00
HAY
33.00
43.00
10.00
NORMALIZED FLOMS(CFS)
JUN JUL AUG
3E.OO
40.00
8.00
76.00
98.00
22.00
69.00
89.00
20.00
SEP
73.00
94.00
21.00
OCT NOV
46.00 32.00
59.00 41.00
13.00 9.00
DEC MEAN
46.00 71.15
60.00 91.91
14.00 20.76
SUMMARY
TOTAL
SUM OF
DRAINAGE AREA OF LAKE =
SUB-DRAINAGE AREAS >
97.00
97.00
TOTAL FLOW
TOTAL FLOW
IN *
OUT -
1107.00
1107.00
MEAN MONTHLY FLOWS AND DAILY FLOWS(CFS)
TRIBUTARY MONTH YEAB
3719A1
3719ZZ
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
1?
1
2
73
73
73
73
73
73
73
73
73
73
74
74
73
73
73
73
73
73
73
73
73
73
74
74
73
73
73
73
73
73
73
73
73
73
74
74
MEAN FLOW DAY
FLOW DAY
FLOW DAY
FLOW
175.00
300.00
26.00
14.00
27.00
26.00
22.00
12.00
4.00
28.00
50.00
180.00
230.00
400.00
35.00
18.00
35.00
34.00
28.00
16.00
5.00
35.00
65.00
230.00
52.00
90.00
7.70
4.20
7.90
7.70
6.40
3.00
1.00
6.00
15.00
SO. DO
24
24
23
27
19
24
26
29
29
19
T
4
24
24
23
27
19
24
26
29
29
19
7
4
140.00
105.00
14.00
34.00
19.00
36.00
11.00
5.00
3.50
23.00
55.00 21
90.00 18
178.00
136.00
17.00
44.00
24.00
46.00
15.00
6. SO
5. SO
29.00
70.00 21
120.00 13
48.00
215.00
63.00
280.00
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
bldrtET *ETHIEVAL UATE 7S/10/2U
J71901
34 18 11.0 078 31 2(1.0
LAKE tfACCAMAW
37047 NORTH CAROLINA
•jOOlO
DATE TIHE DE^Trl WATtR
FKOM Of TtMP
TO DAY FEET CtNT
73/03/2?
73/07/05
73/09/30
15 25 0000
15 ?5 0004
11 15 0000
11 15 0005
11 05 0000
11 05 0005
14.5
14.5
30.2
2
-------
STORE! RETRIEVAL OATE 7b/10/ZO
3H902
34 16 42.0 078 29 35.0
LAKE WACCAMAW
37047 NORTH CAROLINA
OATE
FROM
TO
73/03/22
73/07/05
73/09/20
DATE
FROM
TO
73/03/22
73/07/05
73/09/20
TIME
OF
HAY
16
16
11
11
11
11
00
00
DEPTH
FEET
0000
0004
45 0000
45 0004
40
tO
TIME
OF
LJAY
16
16
11
11
11
11
00
00
45
45
40
^0
0000
0005
DEPTH
FEET
0000
0004
0000
0004
0000
0005
00010
WATER
TEMH
CENT
13.6
13.6
29.7
?9.4
25. &
25.8
l>Oh6S
PHub-TOT
MG/L ^
O.OSii
U.06J
U . 0 1 5
0.017
O.UlH
O.UI4
00300 00077 00094
UO TRANSP CNDUCTVY
SECCHI KIELt)
MG/L INCHES M1CKOMHO
40 55
9.6 SS
12 63
6.6 60
7.8 46 b3
7.6 66
32217
CHLRPHYL
A
UG/L
6.2
2.1)
J.O
11EPALES 2111202
3 0008 FEET DEPTH
00400 00410 00610 00625 00630
PH T ALK NH3-N
CAC03 TOTAL
SU MG/L MG/L
7.00 10K 0
7. to 10K 0
7.20 10K 0
7.20 12 0
6.9u 11 0
6.79 12 0
.070
.060
.080
.030
.060
.040
TOT KJEL N02«k
00671
N03 KHOS-UIS
N N-TOTAL
MG/L MG/L
O.SOO 0
0.500 0
0.700 0
0.600 0
1.100 0
0.600 0
.050
.060
.050
.060
.030
.020
ORTHO
MG/L
0.
0.
0.
0.
0.
0.
P
004
004
003
004
010
Oil
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY DATA
-------
bTORLT KElKll£VAL
DATE
FKOM
TO
7J/U3/24
7 j/0^/24
73/05/23
73/06/27
73/07/14
73/08/2*
73/^9/2*
73/10/2^
7 j/1 1/2^
73/12/1-3
7^/o i/0 1
7n/y 1/21
74/02/Ot
7it/o2/ 1H
TI^E UL^T
OF
L)AY FF.Ll
14 08
12 00
1J 15
11 35
11 35
1 1 00
12 10
11 25
i i ?0
1 I ?3
11 35
1 1 40
11 ?0
I Jb30
"j- fo r AL
l'i.2Ud
O.rtOG
1.150
0.950
1.350
0.400
G.4(JU
1.200
1.100
O.'i'jO
00610
NnJ-N
TOTAL
"tli/L
0.018
0.028
0.024
J.I 60
0.052
0.031
0.088
0.075
0.046
O.U3fa
U.040
0 .060
J.070
0.025
00671
PHOS-01S
ORTHO
MG/L H
0.005K
0.006
0.010
0.009
0.006
0.005K
0.017
0.006
0.040
0.005K
0.005K
O.OOfl
0.005
0.005
OOfafaS
PHOS-TOT
MG/L P
0.005K
0.020
0.020
0.030
0.01S
0.015
0.097
0.005
0.005*
0.008
0.01S
0.005
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STOKtT KETRIEVAL UAlt 75/10/2U
LS3719B1
34 55 00.0 078 31 30.0
KACCAMAW RIVER
37 15 WHITEVILLE
O/LAKE WACCAMAW
U1SCH CAh4AL OF DAM 4.4 MI N OF LK WACCAM
UtPALES 2111204
4 0000 FEET DEPTH
OATE
FKOM
TO
73/03/24
73/04/24
73/05/23
73/36/27
73/07/14
73/{'8/24
73/04/2b
73/10/24
73/11/24
73/12/14
74/01/07
74/01/21
7<+/Oi;/U'«
74/02/14
0063d 00625
TIME OEHTH .\lU?c«N03 TOT KJEL
OF N- TOTAL M
UAY FEET
12
11
10
12
12
11
12
11
11
11
12
12
11
34
15
<»5
05
05
40
39
45
55
00
00
10
45
rtG/L
l>.
«•
0.
C.
J.
u.
u .
0.
J.
0.
u .
0.
0.
0.
01UK
OiUK
I) lt»K
016
0 1 0 'V
Q 1 Q ^
OlOK
010K
OlOK
0?4
0 10K
0 1 OK
020
020
MG/L
0.
U.
0.
0.
2.
0.
0.
0.
0.
0.
c.
1.
u.
710
bOO
500
690
100
710
650
900
30C
400
2CO
300
400
U0610 00671 00665
NH3-N PHOS-UIS PHOS-TOT
TOTAL OKTHO
MG/L
0*
0.
0.
0.
0.
0.
c.
0.
0.
0.
0.
0.
0.
0.
046
020
007
CbU
029
012
084
067
040
1)12
020
012
050
020
MG/L
0.
U.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
H
OOSK
t)05K
OOSK
OOSK
OOSK
OOSK
007
OOSK
006
OOSK
OOSK
OOSK
OOSK
005K
MG/L P
0.01S
0.020
0.015
0.020
0.015
0.015
0.02b
0.010
U.005K
0.020
0.010
K VALUE KNOWN TO BE
LESS THAN INDICATED
------- |