U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
PELICAN LAKE
UINTAH COUNTY
UTAH
EPA REGION VIII
WORKING PAPER No, 852
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
PELICAN LAKE
UINTAH CQUNIY
UTAH
EPA REGION VI11
WORKING PAPER No, 852
WITH THE COOPERATION OF THE
UTAH STATE DIVISION OF HEALTH
AND THE
UTAH NATIONAL GUARD
OCTOBER, B77
-------
CONTENTS
Page
Fo reward i i
List of Utah Study Lakes and Reservoirs iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 3
III. Lake Water Quality Summary 4
IV. Nutrient Loadings 8
V. Literature Reviewed ' 12
VI. Appendices 13
-------
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 freshwater lakes and
reservoirs.
OBJECTIVES
The Survey was designed tc develop, in conjunction with state
environmental agencies, information on nutrient sources, concentrations,
and impact en selected freshwater lakes as a basis for formulating
comprehensive and coordinated nationals regional, and state management
practices relating tc point-source discharge reduction and non-point
source pollution abatement in lake watersheds.
ANALYIIQ-APPRQACH
The'mathamatical a^d statistical procedures selected for the
Survey's eutrophication analysis are based on related concepts that:
ae 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.
c0 With sych 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(ej], water
quality criteria/standards review [§303(c)]j clean lakes [§314(a,b)J,
and "water quality monitoring [§106 and §305(b)] activities mandated
by the Federal Water Pollution Control Act Amendments of 1972.
-------
iii
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, 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.
ACKNOWLEDGEMENT
The staff of the National Eutrophication Survey (Office of
Research and Development, U.S. Environmental Protection Agency)
expresses sincere appreciation to the Utah Department of Social
Services and the Utah Department of Natural Resources for pro-
fessional involvement, to the Utah National Guard for conducting
the tributary sampling phase of the Survey, and to those Utah
wastewater treatment plant operators who voluntarily provided
effluent samples and flow data.
The staffs of the Bureau of Water Quality of the Division
of Health and the Division of Wildlife Resources provided inval-
uable 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 Maurice L. Watts, the'Adjutant General of Utah,
and Project Officer Lt. Colonel T. Ray Kingston, who directed the
volunteer efforts of the Utah National Guardsmen, are also grate-
fully acknowledged for their assistance to the Survey.
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IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES AND RESERVOIRS
STATE OF UTAH
NAML.
Bear
Deer Creek
Echo
Fish
Flaming Gorge
Huntingtcn
Joes Valley
Lower Bowns
Lynn
Minersville
Moon
Navajo
Newcastle
Otter Creek
Panguich
Pelican
Pineview
Piute
Porcupine
Powel1
Pruess
Sevier Bridge
Starvation
Steinaker
Tropic
Utah
Mil lard Bay
COUNTY
Rich, UT; Bear Lake, ID
Wasatch
Summi t
Sevier
Daggett, UT;
Sweetwater, WY
Emery
Emery
Garfield
Box Elder
Beaver
Duchesne
Kane
Iron
Piute
Garfield
Uintah
Weber
Ptute
Cache
Garfield, Kane, San
Juan, UT; Coconino, AZ
Mi Hard
Juab, Sanpete
Duchesne-
Uintah
Garfield
Utah
Box Elder
-------
4(fl4'
_40°12'
X
PELICAN LAKE
Tributary Sampling Site
Lake Sampling Site
1
2 Km.
i
2 Scale
109°, 42'
109°40'
-------
PELICAN LAKE
STORET NO. 4915
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate Pelican Lake is eutrophic. It ranked
twelfth in overall trophic quality when the 27 Utah lakes and
reservoirs sampled in 1975 were compared using a combination of
six parameters*. Sixteen of the water bodies had less and one
had the same median total phosphorus, five had less and two had
the same median dissolved orthophosphorus,, 12 had less and one
had the same median inorganic nitrogen., 12 had less mean chloro-
phyll a, and 17 had greater mean Secchi disc transparency.
Survey limnologists observed extensive growths of submerged
macrophytes each sampling visit, and the numbers of phytoplankton
in the September sample (page 6) indicate a bloom was in progress
at that time.
B. Rate-Limiting Nutrient:
The algal assay results indicate phosphorus was limiting
at the time the sample was collected (09/23/75).
The lake data indicate phosphorus limitation in August and
September but nitrogen limitation in May.
C. Nutrient Controllability:
1. Point sources—No known point sources impacted Pelican
Lake during the sampling year.
* See Appendix A.
-------
2
2. Non-point sources—More than 84% of the total phosphorus
load reaching Lake Pelican during the year of sampling was con-
tributed by the gaged tributaries. The ungaged tributaries were
estimated to have contributed 2.2% of the total phosphorus load.
The present loading of 0.13 g/m2/year is just over two times
that proposed by Vollenweider (Vollenweider and Dillon, 1974) as
a eutrophic loading (see page 11).
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
ft
A. Morphometry :
1. Surface area: 6.88 kilometers2.
2. Mean depth: 3.0 meters.
3. Maximum depth: 5.5 meters,.
4. Volume: 20.895 x 106 m3.
5. Mean hydraulic retention time: 36.8 years (based on outflow),
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Unnamed Canal C-l 0.0 0.123
Minor tributaries &
immediate drainage - 19.0 0.003
Totals 19.0 0.126
2. Outlet -
Unnamed Canal A-l 25.9** 0.018**
C. Precipitation***:
1. Year of sampling: 18.1 centimeters.
2. Mean annual: 18.9 centimeters.
t Table of metric conversions—Appendix B.
tt Sudweeks, 1975.
* For limits of accuracy„ see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of lake; lesser outflow due to irrigation withdrawal
and evaporation.
*** See Working Paper No. 175.
-------
III. WATER QUALITY SUMMARY
Pelican Lake was sampled three times during the open-water season
of 1975 by means of a pontoon-equipped Huey helicopter. Each time,
samples for physical and chemical parameters were collected from two
or more depths at two stations on the lake (see map, page v). During
each visit, a single depth-integrated (near bottom to surface) sample
was composited from the stations for phytoplankton identification
and enumeration; and during the September 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 ^analysis. The maximum depth sampled at each station
was 2.4 meters.
The sampling results are presented in full in Appendix D and are
summarized in the following table.
-------
PARAMETER
TEMP
DISS OXY (MG/L)
CNOCTVY (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 Ai\D
1ST SAMPLING ( 5/13/75)
2 SITES
RANGE
12.1 - 13.5
3.0 - 10.0
775. - 800.
8.8 - 8.9
230. - 294.
0.032 - 0.046
0.006 - 0.018
0.020 - 0.020
0.030 - 0.050
0.600 - 0.800
0.050 - 0.070
0.620 - 0.820
0.8 - 1.4
CHEMICAL CHARACTERISTICS FOR PELICAN LAKE
STORET CODE 4915
2ND SAMPLING ( 8/ 7/75)
2 SITES
3RD SAMPLING < 9/23/75)
2 SITES
MEAN
12.9
9.3
790.
8,9
260.
0.037
0.014
0.020
0.037
0.725
0.057
0.745
1.1
>eeee«oi
MEDIAN
13.0
9.7
793.
8.9
258.
0.036
0.015
0.020
0.035
0.750
0.055
0.770
1.1
me oo o»
RANGE
21.0
8.9
1146.
8.9
196.
0.035
0.004
0.020
0.040
0,700
0.060
0.720
4.0
1.8
- 23.7
- 11.2
- 1250.
9.6
- 398.
- 0.045
- 0.008
- 0.020
- 0.100
- 0.900
- 0.120
- 0.920
5.3
2.1
MEAN
22.2
10.0
1199.
9.3
247.
0.039
0.006
0.020
0.075
0.825
0.095
0.845
4.6
2.0
MEDIAN
22.1
9.9
1199.
9.2
248.
0.037
0.005
0,020
0.080
0.850
0.100
0.870
4.6
2.0
RANGE
17.5
6.6
891.
9.1
258.
0.044
0.002
0.020
0.020
1.000
0.040
1.020
13.2
0.8
- 18. *
7.4
- 919.
9.4
- 378.
- 0.068
- 0.003
- 0.020
- 0.020
- 1.400
- 0.040
- 1.420
- 13.4
1.5
MEAN
17.9
7.1
900.
9.3
303.
0.055
0.002
0.020
0.020
1.200
0.040
1.220
13.3
1.1
MEDIAN
17.8
7.1
897.
9.2
299.
0.053
0.002
0.020
0.020
1.200
0.040
1.220
13.3
1.1
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B. Biological Characteristics:
1. Phytoplankton -
Sampli ng
Date
05/13/75
08/07/75
09/23/75
2. Chlorophyll
Sampli ng
Date
05/13/75
08/07/75
09/23/75
Dominant
Genera
1. Chlamydomonas sp.
2. Fragilaria sp.
3. Chroomonas sp_.
4. Cryptomonas s_p_.
5. Scenedesmus sp.
Total
1. Tetraedron sp.
2. Fragilaria S£.
3. Chroomonas sp.
4. Cryptomonas S£.
5. Oocystis sp.
Other genera
Total
1. Chlorophytan cells
2. Microcystis sp.
3. Dactylococcopsis sp.
4. Merismopedia sp.
5. Oscillatoria sp.
Other genera
Total
Station
Number
1
2
1
2
1
2
Algal Units
per ml
2,218
1,599
70,495
2,287
1,334
953
667
284
76,020
Chlorophyll a
(yg/1)
1.4
0.8
5.3
4.0
13.4
13.2
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7
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 0.010 0.140 1.9
0.050 P 0.060 0.140 7.5
0.050 P + 1.0 N 0.060 1.140 24.0
1.0 N 0.010 1.140 1.6
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornututn, indicates that the potential primary productivity
of Pelican Lake was moderately high at the time the sample
was collected (09/23/75). Also, the significant increase in
yield with the addition of orthophosphorus only, and the lack
of increase when only nitrogen was added, indicate phosphorus
limitation at that time.
The lake data indicate phosphorus limitation in August
and September (the mean inorganic nitrogen/orthophosphorus
ratios were 16/1 and 20/1, respectively) but nitrogen limitation
in May (the mean N/P ratio was 4/1).
-------
8
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Utah National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page v), except for the months
of April, May, and June when two samples were collected. Sampling
was begun in November, 1974, and was completed in August, 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Utah District Office of the U.S. Geological Survey for the
tributary sites nearest the lake.
In this report, nutrient loads for sampled tributaries were
calculated using mean annual concentrations and mean annual flows.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the mean concen-
trations in the unnamed canal at station C-l and the mean annual ZZ
flow.
No known wastewater treatment plants impacted Pelican Lake during
the year of sampling.
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
-------
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source ^r total
a. Tributaries (non-point load) -
Unnamed Canal C-l 775 84.7
b. Minor tributaries & immediate
drainage (non-point load) - 20 2.2
c. Known municipal STP's - None
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 120 13.1
Total 915 100.0
2. Outputs -
Lake outlet - Unnamed Canal A-l 45
3. Net annual P accumulation - 870 kg.
* See Working Paper No. 175.
-------
10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source y_r total
a. Tributaries (non-point load) -
Unnamed Canal C-l 6,240 45.2
b. Minor tributaries & immediate
drainage (non-point load) - 150 1.1
c. Known municipal STP's - None
d. Septic tanks - Unknown ?
e. Known industrial - None
f. Direct precipitation* - 7.430 53.7
Total 13,820 100.0
2. Outputs -
Lake outlet - Unnamed Canal A-l 700
3. Net annual N accumulation - 13,120 kg.
D. Mean Nutrient Concentrations in Sampled Streams:
Mean Total P Mean Total N
Tributary Cone, (mg/1) Cone, (mg/1)
Unnamed Canal C-l 0.200 1.609
Unnamed Canal A-l 0.080 1.233
* See Working Paper No. 175.
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11
E. Yearly Loads:
In the following table, the existing phosphorus loadings
are compared to those proposed by Vollenweider (Vollenweider
and Dillon, 1974). Essentially, his "dangerous" loading is
one at which the receiving water would become eutrophic or
remain eutrophic; his "permissible" loading is that which
would result in the receiving water remaining oligotrophic
or becoming oligotrophic if morphometry permitted. A meso-
trophic loading 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/mVyr 0.13 0.12 2.0 1.9
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Pelican Lake:
"Dangerous" (eutrophic loading) 0,06
"Permissible" (oligotrophic loading) 0.03
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12
V. LITERATURE REVIEWED
Sudweeks, Calvin K., 1975. Personal communication (lake morphometry)
UT Bur. of Env. Health, Salt Lake City.
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.
-------
13
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
-------
LA-0 P
0.007
0*003
0.006
0.006
0.012
0.052
0.004
0.005
0.003
0.107
0.002
0.003
0.009
0.033
0.010
0.004
0.006
0.007
0.011
O.OOb
0.008
0.004
0.005
0.006
0.012
0.009
0.003
-------
PERCENT OF LAKES *IT« HIGHER VALJES (NUMBER OF LAKES wJTH HIGHEK VALUES)
LA
< 3)
1 11)
< 0)
500-
MEAN
ai
96
85
42
19
58
100
69
62
27
73
77
46
15
5®
35
38
8
31
0
23
65
88
54
4
12
92
SEC
( 21)
( 2S>
( 22)
< 11)
< S)
< 15)
J 269
( 18)
t 16)
J 7)
t 195
( 20)
< 12)
< 49
I 13)
( 99
( 109
< 2)
( 8)
( 0)
< 6)
C 179
t 239
( 14)
< 1)
( 3)
( 24)
MEAN
CHLOrtA
73 <
100 (
65 (
35 (
50 <
8 (
23 «
92 (
85 <
12 <
77 J
88 i
27 (
31 (
4 (
54 <
58 (
15 «
38 (
69 {
19 «
62 (
96 (
46 «
0 (
42 <
81 (
19)
26)
17)
9)
13)
29
6J
24)
22)
3)
20)
23)
7 5
8)
19
14)
159
41
10)
18)
59
16)
25)
129
0)
11)
219
15-
MIN DO
15
77
73
0
12
62
62
96
46
85
69
10®
19
54
8
90
4
38
33
81
33
23
27
90
42
50
62
< 4)
< 20)
< 19)
( 0)
< 3)
< 15)
« 15)
< 25)
( 12)
« 22)
« 18)
( 26)
{ 5)
( 14)
« 2)
« 239
« 1)
( 10)
i 8)
« 21)
( 8)
< 69
< 7)
< 23)
< 11)
< 13)
< 15)
MEDIAN
DISS 09TiO P
42
90
50
58
13
4
79
69
96
0
100
85
27
8
23
73
58
46
19
37
37
79
65
58
13
31
90
< ID
< £J>
( 139
( 1*)
( 3)
( 1)
« 20)
( 18)
( 25)
( 0)
( 26)
« 22)
( 7!
( 2)
( 6)
( 19)
( 149
( 12)
( 59
( 9)
( 9)
( 20)
( 17)
( 149
( 3)
( 8)
« 23)
INOE
NO
311
5nO
406
196
Ii2
163
391
46ti
42tt
16el
506
506
229
210
162
343
223
1&5
217
24J
174
389
448
363
75
216
415
-------
LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX MO
1 4901 .BEAR LAKE 540
2 4S>11 NAVAJO LAKE 506
3 4910 MOON LAKE 506
4 4907 HUNTIN6TON NORTH RESERVO 468
5 49Z2 STEINAKER RESERVOIR 448
6 4908 JOE'S VALLEY RESERVOIR 428
7 5605 FLAMING GORGE RESERVOIR 415
8 4902 LOtfER BONN'S RESERVOIR 406
9 4906 FISH LAKE 391
10 4921 STARVATION RESERVOIR 389
11 4923 TROPIC RESERVOIR 363
12 4915 PELICAN LAKE 343
13 0408 LAKE POWELL 311
14 4919 PRUESS RESERVOIR (GARRIS 241
15 4912 NEWCASTLE RESERVOIR 229
16 4916 PINEVIEW RESERVOIR 223
17 4918 PORCUPINE RESERVOIR 217
18 4925 WILLARD BAY RESERVOIR 216
19 4913 OTTER CREEK RESERVOIR 210
20 4903 OEER CREEK RESERVOIR 196
21 4920 SEVIER BRIDGE RESERVOIR 174
22 4909 MINERSVILLE RESERVOIR iee
23 4917 PIUTE RESERVOIR 165
24 4905 LYNN RESERVOIR 163
25 4914 PANOUITCH LAKE 162
26 4904 ECHO RESERVOIR 152
27 4924 UTAH LAKE ' 75
-------
APPENDIX IB
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 C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLO* INFORMATION FOR UTAH
10/18/76
LAKE CODE 4915
PELICAN LAKE
TOTAL DRAINAGE AREA OF LAKE
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STO«ET RETRIEVAL
7n/0«/12
491501
40 11 27.0 109 41 18.0
LAKE
110691
DATE TIME DE^TH
FROM OF
TO DAY FEET
75/05/13 11 45 0000
11 45 0008
75/08/07 10 10 0000
10 10 0006
75/09/33 15 15 0000
15 15 0005
15 15 0008
DATE TIME DEPTH
FROM OF
TO DAY FEET
75/05/13 11 45 0000
il 45 0008
75/08/07 10 10 0000
10 10 0006
75/09/23 15 15 0000
15 15 0005
15 15 0008
C0010
tfATER
TEMP
CENT
12.8
12,1
21,2
21.0
1788
17.5
17.5
00665
PHOS-TOT
MG/L P
0.032
0.036
0.045
0.039
0.044
0.061
0.068
IIE^ALES 2111202
0012 FEET DEPTH CLASS 00
00300 00077 00094 00400 00410 00610 00625
DO TRANSP CNOUCTVY PM T ALK NHS-N TOT KJEL
SECCHI FIELD CACOS TOTAL N
*G/L INCHES MICROMHO Su
9.6
10.0
10.8 84
11.2
7.0 30
h.6
7.0
32217 00031
CHLRPHYL INCDT LT
A REMNING
JG/L PERCENT
1.4
5.3
13.4
786 8.95
775 8.95
1150 8.95
1146 8.95
904 9.10
894 9.10
895 9.10
MG/L MG/L MG/L
294 0.040 0.800
253 0.030 0.600
298 0.070 0.700
298 0.040 0.800
298 0.020K 1.000
300 0.020K 1.200
312 O.G20K 1.400
00630 00671
N02h,N03 PrlOS-DIS
N-TOTAL OHTHO
MG/L MG/L P
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.018
0.017
0.005
0.004
0.002
0.002
0.002
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
bTOKET RETRIEVAL JATE
40 11 33.0 109 40 15.0 3
PELICAN LAKE
49047 UTAH
110691
IIEPALES 2111202
0006 FEET DEPTH CLASS 00
DATE
FROM
TO
75/05/13
75/Od/07
75/09/23
DATE
FROM
TO
75/05/13
75/06/07
75/09/23
TIME
OF
DAY
12
12
10
10
15
15
15
05
05
30
30
40
40
40
TIME
OF
DAY
12
12
10
10
15
15
15
05
05
30
30
40
40
40
DEPTH
FEET
0000
0005
0000
0005
0000
0005
0003
DEPTH
FEET
0000
0005
0000
0005
0000
0005
0008
00010
WATER
TEMP
CENT
13.5
13.2
23.7
23.1
18. t
18.4
17.8
00665
PHOS-TOT
MG/L P
0.046
0.036
0.036
0.035
0.048
0.054
0.053
00300
DO
MG/L
9.
*.
8.
9.
7.
7.
7.
32217
00077 00094
TRANSP CNDUCTVY
SECCHl FIELD
INCHES MICriOMHO
8
0
9 72
0
4 60
3
4
00031
800
800
1250
1248
919
899
891
00400 00410
PH T ALK
CAC03
su
8.85
8.85
9.50
9.65
9.40
9.45
9.45
MG/L
230
258
197
196
378
25B
270
00610 00625
NH3-N TOT KJEL
TOTAL N
Mli/L MG/L
0.050 0.800
0.030 0.700
0.090 0.900
0.100 0.900
0.020K 1.200
0.020 1.200
0.020 1.200
CHLRPHYL INCOT LT
A
UG/L
0.
4.
13.
HEMMING
PERCENT
8
0
2
00b30 00671
N02*»N03 PHOS-OIS
N-TOTAL ORTrtO
MG/L MG/L P
0.020*
0.020K
O.OifOK
0.020K
0.020K
0.020K
0.020K
0.006
0.014
0.006
0.008
0.002
0.002
0.003
K \/iLUE KNOWN TO 6E
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY DATA
-------
RETRIEVAL DATE 7a/C8/12
DATE TIME DEPTH N02t»N03
FROM OF
TO DAY FEET
75/04/05 09 30
75/05/02 17 05
75/05/18 11 30
75/06/07 13 00
75/06/2? 18 30
75/07/1*. 08 00
75/08/16 18 00
4915A1
40 10 55.0 109 40 50.0 4
UNNAMED CREEK
49 7.5 PELICAN LAKE
O/PELICAN LAKE 110691
BNK 100 FT OF END DKT RD 1.8 M wS« LEOTA
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
!t*N03
OTAL
IG/L
1.400
0.005
0.005
0.005
0.005
0.005
C.005
00625
TOT KJEL
N
MG/L
0.700
1.100
1.050
0.900
1.050
1.250
1.150
00610
NH3-N
TOTAL
MG/L
0.065
0.020
C.012
0.020
0.020
0.020
0.015
00671
PHOS-OIS
ORTHO
MG/L P
0.090
0.015
0.012
0.010
0.005K
0.060
0.005
00665
PHOS-TOT
MG/L P
0.160
0.050
0.050
0.040
0.030
0.210
0.020
K VALUE KNOWM TO B£
LESS THAN INDICATED
-------
bTORET RETRIEVAL DATE 76/08/12
4915C1
HO 12 27.0 109 42 06.0 4
UNNAMED CHEEK
49 7.5 PELICAN LAKE
T/PELICAN LAKE 110691
B*DG ON LGHT OTY RD 2 M * OF JCT
11EPALES 2111204
0000 FEET DEPTH CLASS 00
HT
DATE
FROM
TO
74/1 1/09
74/12/15
75/03/08
75/04/05
75/04/06
75/05/02
75/05/18
75/06/22
75/07/14
TIME DEPTH
OF
DAY FEET
11 10
09 10
12 30
09 25
08 45
17 00
11 50
18 00
08 15
00630
N02&N03
N-TOTAL
MG/L
0.040
0.176
0.164
1.880
0.005
0.650
0.400
0.085
0.095
00625
TOT KJEL
N
MG/L
1.100
0.700
1.500
0.087
1.950
1.150
0.750
1.250
2.500
00610
NH3-N
TOTAL
MG/L
0.027
0.020
0.016
0.060
0.070
0.035
0.030
0.030
0.020
00671
PHOS-OIS
ORTHO
MG/L P
0.022
0.005
0.018
0.065
0.015
0.005
0.010
0.095
0.030
00665
PHOS-TOT
MG/L P
0.070
0.070
0.080
0.060
0.060
0.780
0.280
------- |