U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
IMPORT
ON
FALLEN LEAF LAKE
EL UORADO COIMIY
CALIFORNIA
EPA REGION IX
WORKING PAPER No, 746
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
FALLEN LEAF LAKE
EL IDRADO COUNTY
CALIFORNIA
EPA REGION IX
WORKING PAPER No, 746
WITH THE COOPERATION OF THE
CALIFORNIA STATE WATER RESOURCES CONTROL BOARD
AND THE
CALIFORNIA NATIONAL GUARD
JUNE, 1978
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CONTENTS
Page
Foreword i i
List of California 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 4
IV. Nutrient Loadings 9
V. Literature Reviewed 13
VI. Appendices 14
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11
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 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:
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 - .
v
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)], 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.
-------
m
Beyond the single lake analysis, broader based correlations
between nutrient concentration (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 & Development, U.S. Environmental Protection Agency)
expresses sincere appreciation to the California State Water
Resources Control Board and the nine Regional Water Quality
Control Boards for professional involvement, to the California
National Guard for conducting the tributary sampling phase of
the Survey, and to those California wastewater treatment plant
operators who voluntarily provided effluent samples and flow
data.
The staff of the Division of Planning and Research of the
State Water Resources Control Board provided invaluable lake
documentation and counsel during the Survey, coordinated the
reviews of the preliminary reports, and provided critiques
most useful in the preparation of this Working Paper series.
Major General Glen C. Ames, the Adjutant General of Cali-
fornia, and Project Officer Second Lieutenant Terry L. Barrie,
who directed the volunteer efforts of the California National
Guardsmen, are also gratefully acknowledged for their assistance
to the Survey.
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IV
NATIONAL EUTROPHICATION SURVEY
STUDY RESERVOIRS
State of California
Name
Amador
Boca
Britton
Casitas
Crow!ey
Don Pedro
Elsinore
Fallen Leaf
Hennessey
Henshaw
Iron Gate
Lopez
Mary
Mendocino
Nicasio
Lower Otay
Pillsbury
Santa Margarita
Shasta
Shaver
Silver
Tahoe
Tulloch
Lower Twin
Upper Twin
County
Amador
Nevada
Shasta
Ventura
Mono
Tuolumne
Riverside
El Dorado
Napa
San Diego
Siskiyou
San Luis Obispo
Mono
Mendocino
Mari n
San Diego
Lake
San Luis Obispo
Shasta
Fresno
Mono
El Dorado, Placer, CA;
Carson City, Douglas,
Washoe, NV
Calaveras, Tuolumne
Mono
Mono
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3855—
38'53—I
FALLEN LEAF LAKE
Tributary Sampling Site
X Lake Sampling Site
—»/ Drainage Area Boundary
3 Km.
Scale
Mi.
120 03
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FALLEN LEAF LAKE
STORE! NO. 0608
I. CONCLUSIONS
A. Trophic Condition*:
Survey data indicate Fallen Leaf Lake is oligotrophic. It
ranked second in overall trophic quality when the 24 California
lakes and reservoirs sampled in 1975 were compared using a
combination of six parameters**. None of the other water bodies
had less median total phosphorus, seven had less median dis-
solved orthophosphorus, none of the others had less but four
had the same median inorganic nitrogen, and none of the others
had less chlorophyll a^or greater mean Secchi disc trans-
parency. No significant depression of dissolved oxygen with
depth occurred at any of the sampling stations or times.
Survey limnologists did not observe macrophytes or surface
concentrations of algae at any time.
B. Rate Limiting Nutrient:
Due to significant nutrient changes in the algal assay
samples during shipment from the field to the laboratory, the
results are not considered representative of conditions in the
lake at the times the samples were taken.
The lake data indicate nitrogen limitation in March and June
but phosphorus limitation in November.
* Trophic assessment is based on levels of nutrients, dissolved oxygen, and
chlorophyll a; phytoplankton kinds and numbers; and transparency (Allurn
et al., 1977J.
** See Appendix A.
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C. Nutrient Controllability:
1. Point sources—No known municipal or industrial waste-
water plants impacted Fallen Leaf Lake during the sampling
year. Septic tanks serving lakeshore dwellings contributed
an estimated 7.9% of the total phosphorus load, but a shore-
line survey is needed to determine the significance of those
sources.
The present phosphorus load of 0.11 g/m2/yr is less
than that proposed by Vollenweider (Vollenweider and Dillon,
1974) as an oligotrophic load (see page 12) and every effort
should be made to prevent any increase in phosphorus inputs
to protect the existing high quality of Fallen Leaf Lake.
2. Non-point sources—Non-point sources, including
direct precipitation, contributed 92.1% of the total phos-
phorus load reaching the lake during the sampling year.
Glen Alpine Creek added 56.7% of the total load, and the un-
gaged tributaries contributed an estimated 19.7%.
The non-point phosphorus export rate of Glen Alpine
Creek was 13 kg/m2/yr (see page 11).
-------
t
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
A. Morphometry .
1. Surface area: 5.71 kilometers2.
2. Mean depth: 1.5 meters.
3. Maximum depth: > 68.6 meters.
4. Volume: 8.388 x 106 m3.
5. Mean hydraulic retention time: 64 days.
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Name
Glen Alpine Creek
Minor tributaries &
immediate drainage -
Totals 37.6
2. Outlet -
Taylor Creek 43.3
C. Precipitation***:
1. Year of sampling: 43.1 centimeters.
2. Mean annual: 44.6 centimeters.
Drainage
area (km2)*
28.0
9.6
Mean flow
(m3/sec)*
1.037
0.473
**
1.510**
1.510
t Table of metric equivalents—Appendix B.
tt Dendy, 1974.
* For limits of accuracy, see Working Paper No. 175, "... Survey Methods,
1973-1976".
** Includes area of lake; inflow adjusted to equal outflow.
*** See Working Paper No. 175.
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III. WATER QUALITY SUMMARY
Fallen Leaf 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 a number of depths at five stations in March and November and
from four stations in June (see map, page v). During each visit,
a single depth-integrated (4.6 m to surface) sample was composited
from the stations for phytoplankton identification and enumeration;
and during the first and last visits, 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 59.7
meters at station 1, 21.3 meters at station 2, 68.6 meters at stations 3
and 4, and 61.0 meters at station 5.
The sampling results are presented in full in Appendix D and are
summarized in the following table.
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A.
OF PHYSICAL
PARAMETER
TEMP (C)
D1SS OXY (MG/L)
CNOCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/D
ORTHO P (MG/L)
N02»NU3 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
INORG N (MG/L)
TOTAL N (MG/L)
CHLRPYL A (UG/L>
SECCHI (METERS)
1ST SAMPLING ( 3/18/75)
5 SITES
MANGE MEAN MEDIAN
2.7 - 3.1 2.9 2.V
9.6 - 10.4 10.0 10.0
16. - 34. 23. 23.
6.7 - 8.? 7.4 7.5
10. - 19. 13. 13.
0.004 - 0.058 0.008 0.007
0.002 - 0.016 0.008 0.010
0.020 - 0.020 0.020 0.020
0.020 - 0.050 0.022 0.020
0.200 - 0.400 0.226 0.200
0.040 - 0.070 0.042 0.040
0.220 - 0.420 0.246 0.220
0.8 - 2.0 1.1 0.8
0.9 - 10.7 8.2 10.4
CHEMICAL CHAPACTEIRISTICS FOR f
STOKET CODE 0603
2ND SAMPLING ( fe/27/75)
4 SITES
RANGt
2.1 -
6.2 -
10. -
7.3 -
13. -
0.006 - 0.010
0.002 - 0.012
0.005 - 0.020
0.010 - 0.050
0.050 - 0.200
0.015 - 0.070
0.055 - 0.220
0.3 -
LEAF ft£5EK\/oiR
1.5
0.4
25.
8.4
17.
010
012
020
050
200
070
220
0.9
5.2
MEAN
6.9
9.2
15.
7.6
16.
0.009
0.005
0.011
0.018
0.084
0.029
0.096
0.6
13.0
KEUIAN
7.7
9.0
13.
7.5
16.
0.010
0.005
0.010
0.015
0.050
0.025
0.060
0.5
15.2
3KO SAMPLING
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
03/18/75
Dominant
Genera
1. Cryptomonas :sjx
2. Nitzschia sp.
3. Dinobryon sp.
4. Cyclotella sp.
5. Chiamydomonas sp.
Other genera
Total
Algal Units
per ml
205
160
160
114
91
114
844
06/27/75
1. Synedra sp.
2. Cyclotella S£
3. Dinobryon sp.
Total
20
10
40
11/04/75
1. Chroomonas (?) sp.
2. Dinoflage!late cysts
43
21
Total
64
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Sampling
Date
03/18/75
06/27/75
11/04/75
Station
Number
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
2. Chlorophyll a^
Chlorophyll ja
(yg/1)
1.0
2.0
0.8
0.8
0.8
0.4
0.3
0.7
0.9
0.5
0.8
0.6
0.7
0.7
C. Limiting Nutrient Study:
Due to significant changes in nutrients in the samples,
the algal assay results are not considered representative of
conditions in the lake at the times the samples were collected
(03/18/75 and 11/4/75).
Overall, the lake data indicate that Fallen Leaf Lake was
nitrogen limited in March and June but phosphorus limited in
November. The mean inorganic nitrogen to orthophosphorus ratios
were 5 to 1 in March, 6 to 1 in June, and 20 to 1 in November.
Following is a tabulation of the mean N to P ratios for
each station and sampling time, with indicated limiting nutrient
in parentheses.
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8
Station 03/18/75 06/27/75 11/14/75
1 10/1 (N) 5/1 (N) 20/1 (P)
2 13/1 (N-?) 7/1 (N) 10/1 (N)
3 4/1 (N) - 20/1 (P)
4 3/1 (N) 5/1 (N) 20/1 (P)
5 4/1 (N) 5/1 (N) 20/1 (P)
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IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the California 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 March, April, and June when two samples were collected
at the outlet. Sampling was begun in November, 1974, and was completed
in October, 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the California District Office of the U.S. Geological Survey for the
tributary sites nearest the lake.
In this report, nutrient loads for sampled tributaries were de-
termined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. Nutrient loads for unsampled
"minor tributaries and immediate drainage" ("ZZ" of U.S.G.S.) were
estimated using the nutrient loads, in kg/km2/year, at station B-l,
and multiplying by the ZZ area in km2.
No known wastewater treatment plants impacted Fallen Leaf Lake
during the sampling year.
* See Working Paper No. 175.
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10
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
Glen Alpine Creek 360 56.7
b. Minor tributaries & immediate
drainage (non-point load) - 125 19.7
c. Known municipal STP's - None
d. Septic tanks* - 50 7.9
e. Known industrial - None
f. Direct precipitation** - 100 15.7
Total 635 100.0
2. Outputs -
Lake outlet - Taylor Creek 510
3. Net annual P accumulation - 125 kg.
* Estimate based on 170 lakeshore dwellings; see Working Paper No. 175,
** See Working Paper No. 175.
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11
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
Glen Alpine Creek 22,550 58.9
b. Minor tributaries & immediate
drainage (non-point load) - 7,730 20.3
c. Known municipal STP's - None
d. Septic tanks* - 1,810 4.7
e. Known industrial - None
f. Direct precipitation** - 6,165 16.1
Total 38,255 100.0
2. Outputs -
Lake outlet - Taylor Creek 28,475
3. Net annual N accumulation - 9,780 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Glen Alpine Creek 13 805
* Estimate based on 170 lakeshore dwellings; see Working Paper No. 175.
** See Working Paper No. 175.
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12
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 0.11 0.02 6.7 1.7
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Fallen Leaf Lake:
"Dangerous" (eutrophic loading) 0.56
"Permissible" (oligotrophic loading) 0.28
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13
V. LITERATURE REVIEWED
Allum, M.O., R.E. Glessner, and J.H. Gakstatter, 1977. An evalua-
tion of the National Eutrophication Survey data. Working Paper
No. 900, Corvallis Env. Res. Lab., Corvallis, OR.
Dendy, William B., 1974. Personal communication (waterbody in-
formation and morphometry). CA Water Res. Contr. Bd., Sacra-
mento.
Vollenweider, R. A., and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Pub!. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
-------
14
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
-------
LAKE DATA TO BE USED IN BANKINGS
LAKE
COOE LA
-------
PERCENT OF L&KES wlTrt rtlGHER VALUES (NUMBER OF LAKES rflTrl HIGHER VALUES)
LAKE
CODE LAKE NAME
0601 AMADOR RESERVOIR
0602 BOCA LAKE
0603 LAKE «PITTON
0604 CASITAS RESERVOIR
0605 CROWLEY LAKE
0606 DON PEORO RESERVOIR
0607 LAKE ELSINORE
0608 FALLEN LEAF RESERVOIR
0609 LAKE HENNESSEY
0610 LAKE HENSHAW
0611 IRON GATE RESERVOIR
0614 LOPEZ LAKE
0615 LAKE MARY
0616 LAKE MENDOCINO
0617 NICASIO RESERVOIR
0618 LOWER OTAY RESERVOIR
0619 LAKE PILLSBURY
0620 SANTA MARGARITA LAKE
0621 SHASTA LAKE
0622 SHAVER
062J SILVER LAKE
0624 TULLOCK RESERVOIR
0625 UPPtR TWIN LAKES
0626 LOWER TWIN LAKES
MEDIAN
TOTAL P
35
89
17
43
30
83
0
100
48
13
9
4
96
65
26
22
57
39
61
78
89
52
70
74
( 8)
( 20)
( 4)
( 10)
( 7)
( 19)
( 0)
< 23)
< 11)
( 3)
( 2)
( 1)
( 22)
( 15)
( 6)
< 5)
( 13)
( 9)
( 14)
( 18)
< 20)
< 12)
( 16)
( 17)
MEDIAN
INOHG N
4 (
98 (
22 (
74 (
78 (
54 (
17 (
87 (
54 (
33 (
0 (
26 (
87 (
70 (
9 (
13 (
41 (
33 (
54 (
41 (
65 (
54 (
98 (
87 (
1)
22)
5)
17)
18)
11)
4)
19)
11)
7)
0)
6)
19)
16)
2)
3)
9)
7)
11)
9)
15)
11)
22)
19)
500-
MEAN SEC
43
70
17
48
65
57
0
100
39
13
26
74
91
30 >
4
22
9 i
52 i
61 <
83 1
78 1
35 1
87 1
96 I
( 10)
( 16)
( 4)
( 11)
( 15)
( 13)
( 0)
( 23)
( 9)
( 3)
( 6)
( 17)
t 21)
( 7)
( 1)
t 5)
( 2)
t 12)
I 14)
U 19)
[ 18)
: 8)
[ 20)
; 22)
MEAN
CHLORA
9
91
48
7C
43
61
0
100
52
4
39
26
83 <
74 I
30 i
13 I
35 I
22 1
57 1
96 1
87 (
17 (
65 (
78 <
( 2)
( 21)
( ID
( 16)
( 10)
( 14)
( 0)
( 23)
( 12)
( 1)
t 9)
( 6)
( 19)
t 17)
I 7)
I 3)
t . 8)
I 5)
I 13)
[ 22)
: 20)
: 4)
15)
: i8>
15-
MIN DO
17
100
43 i
22
30
37
78
70 <
4 i
54 i
26 i
4 I
48 1
61 1
54 1
4 1
74 1
13 1
65 (
87 (
96 (
87 <
87 (
37 (
( 4)
( 23)
( 10)
( 5)
( 7)
( 8)
( 18)
( 16)
! 0)
( 12)
( 6)
I 0>
I 11)
! 14)
I 12)
( 0>
: 17)
: 3)
: is)
19)
22)
19)
19)
8)
MEDIAN
DISS ORTHO P
26
91
17
37
22
78
9
70
52
13
4
0
100
63
46
46 <
63 i
37 i
30 I
78 1
91 1
57 (
78 (
91 (
( 6)
( 20)
( 4)
( 8)
( 5)
( 17)
( 2)
( 16)
( 12)
( 3)
( 1)
( 0)
( 23)
( 14)
( 10)
( 10)
( 14)
I 8)
I 7)
1 17)
: 20)
; 13)
: 17)
20)
INDEX
NO
134
539
164
294
268
370
104
527
249
130
104
134
505
363
169
120
279
196
328
463
506
302
485
463
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LAKES RANKED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
1 0602 BOCA LAKE 539
2 0608 FALLEN LEAF RESERVOIR 527
3 0623 SILVER LAKE 506
4 0615 LAKE MARY 505
5 0625 UPPER TWIN LAKES 485
6 0626 LOWER TWIN LAKES 463
7 0622 SHAVER 463
8 0606 DON PEDRO RESERVOIR 370
9 0616 LAKE MENDOCINO 363
10 0621 SHASTA LAKE 328
11 0624 TULLOCK RESERVOIR 302
12 0604 CASITAS RESERVOIR 294
13 0619 LAKE PILLSBURY 279
1<» 0605 CROrtLEY LAKE 268
15 0609 LAKE HENNESSEY 249
16 0620 SANTA MARGARITA LAKE 196
17 0617 NICASIO RESERVOIR 169
18 0603 LAKE BRITTON 164
19 0614 LOPEZ LAKE 134
20 0601 AMADOR RESERVOIR 134
21 0610 LAKE HENSHArf 130
22 0618 LOWER OTAY RESERVOIR 120
23 0607 LAKE ELSINOrtE 104
24 0611 IRON GATE RESERVOIR 104
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APPENDIX B
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 ~4 = 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 FLOW INFORMATION FOR CALIFORNIA
LAKE CODE 0608 FALLEN LEAF LAKE
TOTAL DRAINAGE AREA OF LAKE(SQ KM) 43.3
09/34/76
SUB-OKAINAGE
TRIBUTARY AREA(SO KM)
0608A1
060881
0608ZZ
43.3
28.0
9.6
JAN
3.01
0.538
0.176
FE8
0.93
0.255
0.088
MAR
0.93
0.431
0.167
APR
1.47
1.019
0.340
MAY
4.47
4.361
1.501
NORMALIZED FLOWS(CMS)
JUN JUL AUG
3.94
3.710
1.346
1.02
0.623
0.212
0.28
0.255
0.088
SEP
0.19
0.127
0.045
OCT
0.28
0.139
0.048
NOV
1.16
0.099
0.034
DEC
1.33
0. 793
0.266
MEAN
1.51
1.0.37
0.352
SUMMARY
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUB-DRAINAGE AREAS =
43.3
37.6
TOTAL FLOw IN =
TOTAL FLOW OUT =
16.61
18.03
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY
0608A1
06u8yl
0608ZZ
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
?
3
4
5
6
7
8
9
10
74
74
75
75
75
75
75
75
75
75
75
75
74
74
75
75
75
75
75
75
75
75
75
75
74
74
75
75
75
75
75
75
75
75
75
75
0.142
0.164
0.311
0.651
0.736
0.651
3.681
5.210
1.246
0.170
0.193
1.133
0.034
0.085
0.085
0.091
0.176
0.215
3.625
5.607
1.076
0.340
0.156
0.396
0.011
0.028
0.028
0.031
0.059
0.074
1.246
1.897
0.368
0.116
0.054
0.136
9
8
12
8
11
10
22
29
9
9
10
22
20
9
FLOW DAY
0.147
0.193
0.425
19
27
19
21
0.623
0.651
1.331
3.143
0.153
0.125
0.023
0.0 30
4.814
0.623
0.311 21
FLOW DAY
0.680
0.595
4.304
0.210
FLOW
7.221
0.425
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 76/09/24
050801
33 52 55.0 120 0* 03.0 3
FALLEN LEAF RESERVOIR
06017 CALIFORNIA
DATE TIME DEPTH
FROM OF
TO DAY
75/03/18 09
09
09
09
09
09
09
09
09
75/06/27 12
12
12
12
12
12
12
75/11/04 10
10
10
10
10
10
1C
F
30
30
30
30
30
30
30
30
30
45
45
45
45
45
45
45
20
?0
20
20
20
20
?0
E£T
0000
0005
0020
0050
0080
01 10
0140
0170
0196
0000
0005
0015
0035
0065
0085
0126
OOOC
0005
0025
0060
(1100
0135
0170
00010
WATER
TEMP
CENT
2.7
2.7
2.7
2.7
2.7
2.7
2.7
2.7
2.8
9.4
9.1
6.4
7.9
6.2
3.6
2.5
11.4
11.4
11.5
11.4
9.4
8.0
7.7
00300
DO
MG/L
10.0
1C.O
10.0
9.8.
10.0
9.9
9.9
9.9
9.8
8.0
8.8
8.6
9.0
9.8
10.0
10.0
8.8
9.4
9.0
8.8
9.8
10. 0
9.4
00077
TRANSP
SECCHI
INCHES
420
600
600
00094
CNOUCTVY
FIELD
MICROMHO
16
17
17
17
17
17
18
16
18
22
15
13
12
11
11
14
IK
IK
IK
IK
IK
IK
IK
150191
11EPALES
0200 FEET
Dl
00400 00410
PH T ALK
CAC03
SU MG/L
7.50
7.20
6.ao
6.70
6.80
6.90
6.85
6.90
7.00
7.90
8.10
7.90
7.80
7.70
7.65
7.60
7.65
7.60
7.50
7.50
7.40
7.30
7.30
15
10
11
11
12
12
11
12
12
1C
10
10
10
13
16
16
2111202
DEPTH CLASS 00
00610
NH3-N
TOTAL
MG/L
0.020
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020
0.025
0.020K
0.025
0.015
0.010
0.015J
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.300
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.050
0.050K
0.050K
0.050K
0.050K
0.050K
0.050K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
00630
N-TOTAL
MG/L
0.02GK
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.010
0.010
0.010
0.010
0.005
0.005
0.010
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00671
PHOS-DIS
OWTHO
MG/L P
0.004
0.003
0.005
0.003
0.004
0.004
0.004
0.004
0.004
0.005K
0.005K
0.005K
0.005K
0.005K
0.005K
0.005K
0.002K
0.002
0.002K
0.002K
0.002K
0.002K
0.002K
VALUE i\NOi«/N TO »'€. LESS
THAN INDICATED
J» VALUE KNOWN) TO
-------
STORE! RETRIEVAL DATE 76/09/24
060801
38 52 55.0 120 04 03.0
FALLEN LEAF RESERVOIR
06017 CALIFORNIA
150191
11EPALES 2111202
0200 FEET DEPTH CLASS 00
DATE TIME OEPTt
FROM OF
TO DAY FEET
75/03/18
75/06/27
75/11/04
09
09
09
09
09
09
09
09
09
12
12
12
12
12
12
12
10
10
10
10
10
10
10
30 0000
30 0005
30 0020
30 0050
30 0080
30 0110
30 0140
30 0170
30 0196
45 0000
45 0005
45 0015
45 0035
45 0065
45 0085
45 0126
20 0000
20 0005
20 0025
20 0060
20 0100
20 0135
?0 0170
0665 32217
S-TOT CHLRPHYL
A
'/L P UG/L
0.007 1.0
0.005
0.005
0.004
0.004
0.004
0.005
0.004
0.006
0.010K 0.4
0.010K
0.010-
0.010K
0.010*
0.010*
0.010K
0.004 0.5
0.005
0.005
0.005
0.005
0.005
0.005
00031
INCDT LT
REMNING
PERCENT
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/09/2*
060802
38 54 55.0 120 03 40.0 3
FALLEN LEAF RESERVOIR
06017 CALIFORNIA
150191
OATE
FROM
TO
75/03/24
75/07/02
75/11/05
TIME DEPTH
OF
DAY FEET
09 30 0000
09 30 0005
09 30 0020
09 30 0040
09 30 0062
12 25 0000
12 25 0005
12 25 0030
12 25 0040
12 25 0060
12 ?5 0070
08 40 0000
08 40 0005
08 40 0015
08 40 0030
08 40 0052
00010
WATER
TEMP
CENT
3.1
3.1
3.1
3.1
3.0
11.5
11.3
10.4
9.7
6.9
6.^.
1 .5
1 .6
1 .6
1 .6
1 .6
00300
DO
MG/L
10.0
10.0
10.2
10.0
10.2
8.4
8.6
8.6
9.2
8.8
10.0
8.6
9.2
9.0
8.8
9.0
00077
TRANSP
SECCHI
INCHES
35
240
600
00094
CNDUCTVY
FIELD
MICROMHO
27
23
24
23
24
25
21
20
19
17
25
3
1
1
1
1
11EPALES
0066
00400
PH
su
6.95
7.15
7.15
7.30
7.40
7.75
7.70
7.60
7.50
7.50
8.40
7.10
7.10
7.10
7.10
7.10
2111202
FEET DEPTH CLASS
00410
T ALK
CAC03
MG/L
16
14
15
14
14
13
15
16
17
15
17
10K
10K
10K
10K
10K
00610
NH3-N
TOTAL
MG/L
0.050
0.030
0.030
0.030
0.020
0.030
0.050
0.020
0.030
0.020K
0.030
0.020K
0.020K
0.020K
0.020K
0.020K
00
00625
TOT KJEL
N
MG/L
0.400
0.300
0.200K
0.200K
0.200K
0.200
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200
0.200K
0.200K
0.200
00630
N02&N03
N-TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020
0.020K
0.020K
0.020K
0.020K
0.0 20K
0.020K
0.020K
0.020K
0.020K
00671
PHOS-OIS
ORTHO
MG/L P
0.006
0.004
0.003
0.003
0.002
0.008K
0.012K
0.008
0.008K
0.002K
0.002K
0.003
0.008
0.004
0.003
0.002
DATE
FROM
TO
75/03/24
75/07/02
75/1 1/05
00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL INCDT LT
OF A REMNING
DAY FEET
09
09
09
09
09
12
12
12
12
12
12
08
08
03
08
08
30
30
30
30
30
25
25
25
25
25
2S
40
40
<»0
40
40
0000
0005
0020
0040
0062
0000
0005
0030
0040
0060
0070
COOO
0005
0015
0030
0052
MG/L P UG/L PERCENT
0
0
0
0
C
0
0
0
0
0
0
0
0
0
0
0
.011 2.0
.007
.008
.007
.007
.006 0.3
.009
.007
.007
.OC6
.OOfa
.010 C.8
.007
.004
.004
.004
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/09/24
75/03/2'* 09 25 0000
09 25 0035
09 25 0025
09 ?5 0075
09 25 0125
09 25 0175
09 25 0225
75/11/05 09 00 0000
09 00 0005
09 00 0020
09 00 0060
09 00 0105
09 00 0140
09 00 0175
2.d
2.8
2.8
2.8
2.8
2.9
2.9
11.6
11.6
11.6
11.6
10.2
7.9
7.7
10.0
10.4
10.0
10.0
10.0
10.4
«.8
6.8
9.0
9.0
9.2
9.8
10.0
336
600
24
22
22
27
24
22
24
1
1
1
IK
IK
1
1
060803
38 54 23.0 120 03 14.0 3
FALLEN LEAF RESERVOIR
06017 CALIFORNIA
150191
llEPALiS
099V FEET
2111202
DEPTH CLASS 00
7.80
7.50
8.20
8.00
7.60
8.00
7.50
7.00
7.10
7.15
7.20
7.10
7.10
7.00
12
10K
10
12
13
14
13
10K
10K
10K
10
10K
10
12
00610
NH3-N
TOTAL
MG/L
0.030
0.020K
U.020K
0.020K
0.020K
C.020K
C.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
-00625
TOT KJEL
N
MG/L
0.400
0.200
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
00630
N02&N03
N-TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00671
PHOS-OIS
OKTHO
MG/L P
0.014K
0.010K
0.010K
0.010K
O.OUK
0.01UK
0.012K
0.002
0.002
0.002K
0.002
0.002K
0.002K
0.002K
00665 32217
DATE TIME DEPTH PHOS-TOT CHLRPHYL
FROM OF A
TO liAY FEET MG/L P UG/L
75/03/24 09 25 0000 0.014 0.8
09 25 0005 0.007
09 25 0025 0.007
09 ?5 0075 0.007
09 25 0125 0.007
09 ?5 0175 0.007
09 25 0225 O.OOH
75/11/05 09 00 0000 0.005 0.6
09 00 0005 0.005
09 00 0020 0.004
09 00 0060 0.005
09 00 0105 0.004
09 00 0140 0.006
09 00 0175 0.004
00031
INCDT LT
REMNING
PERCENT
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 76/09/2'*
DATE
FROM
TO
75/03/2*
75/C6/27
75/11/05
TIME
OF
DAY
12
12
12
12
12
12
12
14
14
14
14
14
14
14
14
09
09
09
09
09
09
09
30
30
30
30
30
30
30
15
15
15
15
15
15
15
15
30
30
30
30
30
30
30
DEPTH
FEET
0000
0005
0025
0075
0125
0175
0225
0000
0005
0020
0050
0070
0110
0150
0210
0000
0005
0025
0060
0105
0140
0175
00010
WATER
TEMP
CENT
3.0
3.0
3.0
3.0
3.0
3.1
3.1
9.7
9.6
9.5
7.7
4.8
3.8
2.8
2.4
11.5
11.6
11.6
11.5
10. 1
8.0
7.8
00300
00
MG/L
10.0
10.2
10.2
10.0
10.0
10.0
10.0
8.4
8.6
9.2
8.8
10.4
6.2
10.0
10.4
9.0
8.8
9.0
8.8
9.8
9.8
9.8
00077
TR4NSP
SECCHI
IMCHES
408
600
600
00094
CNDUCTVY
FIELD
MICROMHO
25
26
34
28
29
24
24
17
16
15
12
11
11
10
12
1
IK
IK
IK
IK
1
1
060804
38 54 00.0 120 03 59.0 3
FALLEN LEAF RESERVOIR
06017 CALIFORNIA
150191
HEP ALES
FEET
DEPTH
00400
PH
SU
7.90
7.70
7.50
7.20
7.70
7.80
7.90
7.55
7.50
7.50
7.50
7.40
7.40
7.40
7.30
7.15
7.20
7.15
7.20
7.10
7.10
7.00
00410
T ALK
CAC03
MG/L
13
16
15
16
17
19
18
10
10
11
10
10
10
10K
211
H CLASS
00610
NH3-N
TOTAL
Mu/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020J
0.020
0.020
0.010
0.010
0.015
0.010
0.010
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
1202
00
00625
TOT KJEL
N
MG/L
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.050J
0.050K
0.050K
0.050K
0.050K
0.050
0.050K
0.050K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
00630
N02&N03
N-TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.010
0.010
0.010
0.010
0.010
0.010
0.005
0.005
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00671
PHOS-DIS
ORTHO
MG/L P
0.01 IK
0.016K
0.010K
0.010K
0.010K
0.0 15K
0.01 IK
0.005K
0.005K
0.005K
0.005K
0.005K
0.005K
0.005K
0.005K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002K
0.002
K* VALUE KNOWN TO IE LESS
THAN I'-IOICATEO
VALUE KNOWN TO -HE I
-------
STORET RETRIEVAL DATE 76/09/24
060604
38 54 00.0 120 03 59.0 3
FALLEN LEAF RESERVOIR
06on CALIFORNIA
150191
11EPALES
0999 FEET
DEPTH
3111202
CLASS 00
DATE
FROM
' TO
75/03/24
75/06/27
75/11/05
00665 32217 00031
TIME DEPTH PHOS-TOT CriLRPHYL INCDT LT
OF A REMNING
DAY FEET
12
12
12
12
12
12
12
14
14
14
14
14
14
14
14
09
09
09
09
09
09
09
30
30
30
30
30
30
30
15
15
15
15
15
15
15
15
30
30
30
30
30
30
70
0000
0005
0025
0075
0125
0175
0225
0000
0005
0020
0050
0070
0110
0150
0210
0000
0005
0025
0060
0105
0140
0175
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
c
0
0
0
c
0
0
0
0
0
•
•
•
•
•
•
•
•
•
•
•
»
•
•
•
•
•
•
•
•
•
•
p
009
006
007
007
006
009
007
010*
010*
01U*
010*
010K
010*
OiO*
010*
005
006
OOb
004
006
004
004
UG/L QERCENT
0.8
0.7
0.7
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORET RETRIEVAL DATE 76/09/24
060605
38 53 20.0 120 03 40.0 3
FALLEN LEAF RESERVOIR
06017 CALIFORNIA
150191
DATE
FROM
TO
75/03/24
75/06/27
75/11/05
TIME
OF
DAY
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
09
C9
09
09
09
09
09
10
10
10
10
10
10
10
30
30
30
30
30
30
30
30
55
55
55
55
55
55
55
DEPTH
FEET
0000
0005
0025
0050
0090
0140
0190
0000
0005
0015
0040
0070
0110
0155
0200
0000
0005
0025
0060
0100
0155
0170
00010
WATER
TEMP
CENT
2.9
2.9
2.8
2.9
2.9
3.0
3.0
9.5
9.6
9.5
7.6
3.7
2.8
2.4
2.1
11.4
11.5
11.5
11.5
10.1
8.2
7.1
00300
DO
MG/L
10.2
10.0
10.0
10.0
10.0
9.8
10.0
3.6
8.6
8.6
9.4
1C.O
10.4
9.8
10.4
9.0
8.8
8.8
9.0
9.2
9.8
9.8
00077
TRANSP
SECCHI
INCHES
420
600
600
00094
CNDUCTVY
FIELD
MICROMHO
25
23
23
23
22
26
23
18
15
13
11
10
10
12
13
1
1
IK
IK
IK
1
1
11EPALES
0195
00400
PH
SU
7.50
8.00
7.20
7.60
7.20
8.20
7.90
7.40
7.40
7.40
7.40
7.35
7.30
7.30
7.30
7.30
7.30
7.25
7.30
7.25
7.20
7.10
2111202
FEET DEPTH CLASS
00410
T ALK
CAC03
MG/L
19
14
13
14
13
10
10K
10K
10K
10K
10K
10K
10K
10K
00610
NH3-N
TOTAL
MG/L
0.020K
0.030
0.020K
0.020K
0.020K
0.020K
0.020K
0.025
0.010
0.010
0.010
0.010
0.010
0.015
0.010
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00
00625
TOT KJEL
N
MG/L
0.300
0.200*
0.200K
0.200K
0.200K
0.200K
0.400
0.150
0.050K
0.050K
0.050K
0.050K
0.050K
0.050K
0.050K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
00630
N02&N03
M-TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.015
0.005
0.010
0.010
0.010
0.010
0.010
0.010
0.020K.
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00671
PnOS-DIS
ORTHO
MG/L P
0.012K
0.013K
0.012K
0.013K
0.011K
0.010J
0.012J
0.005K
0.005K
0.005K
0.005K
0.005K
0.005K
0.005K
0.005K
0.002
0.002
0.002K
0.002K
0.002K
0.002K
0.002K
VALUE KNOWN TO rtt LESS
THSN
VALUF KNOWN TO
IN
-------
STORE! RETRIEVAL DATE 76/09/34
060805
38 S3 20.0 120 03 40.0 3
FALLEN LEAF RESERVOIR
06017 CALIFORNIA
150191
11EPALES
0195 FEET
2111202
DEPTH CLASS 00
DATE TIME DEPTh
FROM OF
TO DAY FEET
75/03/24
75/06/27
75/11/05
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
09
09
09
09
09
09
09
10 0000
10 0005
10 0025
10 0050
10 0090
10 0140
10 0190
30 0000
30 0005
30 0015
30 0040
30 0070
30 0110
30 0155
30 0200
55 0000
55 0005
55 0025
55 0060
55 0100
55 0155
55 0170
10665 32217
IS-TOT CHLRPHYL
A
i/L P UG/L
0.007 0.8
0.008
0.006
0.006
0.006
0.011
o.ose
0.010* 0.9
0.010K
0.010*
0.010K
0.010*
0.010*
0.010K
0.010K
U.004 0.7
0.004
0.006
0.004
0.005
0.005
0.00«
00031
INCDT LT
REMNING
PERCENT
K VALUE KNOWN TO 8E
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY DATA
-------
STORET RETRIEVAL DATE 76/09/34
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/11/09 12 48
74/13/08 11 35
75/01/12 10 00
75/03/08 10 00
75/03/19 16 10
75/04/11 11 00
75/04/27
75/05/10
75/06/19 11 00
75/06/33 13 00
75/07/39 16 00
75/08/09
75/08/21
75/10/21
060oAl
38 56 00.0 120 03 20.0 4
TAYLOR CREEK
06 7.5 EMERALD BAY
0/FALLEN LEAF LAKE 150191
H*Y 89 BrtDG .5 MI S OF KIVA BEACH
11EPALES 211120**
0000 FEET DEPTH CLASS 00
0630
8.N03
OTAL
G/L
0.032
0.040
0.024
0.015
0.005
0.010
0.015
0.010
0.005
0.070
0.650
0.020
0.015
0.015
00625
TOT KJEL
N
MG/L
0.200
0.600
0*200
0*400
0.400
1.050
0.600
0.900
0.550
0.350
0.300
0.050
0.500
0.300
00610
NH3-N
TOTAL
MG/L
0.040
0.040
0.012
0.008
0.080
0.015
0.020
0.040
0.015
0.015
0.020
C.015
0.165
0.011
00671
PHOS-D1S
ORTHO
MG/L P
0.015
C.006
0.007
0.008K
0.005K
0.005K
0.005K
0.015
0.005K
0.010
0.005K
0.005K
C.005K
00665
PHOS-TOT
MG/L P
0.015
0.015
0.010K
0.010K
0.010K
0.010K
0.030
0.015
0.040
0.010
0.010K
0.010K
0.010*
K VALUE KNOn/N TO BE
LESS THAN INDICATED
-------
STOtfET RETRIEVAL DATE 76/09/34
0608bl
38 53 50.0 130 04 10.0 4
GLEN ALPINE CHEEK
06 7.5 EMERALD BAY
T/FALLEN LEAF LAKE 150191
SEC RD BKOG .3 MI S OF FALLEN LEAF
11EPALES 2111304
0000 FEET DEPTH CLASS 00
DATE TIME DEPTH N02&N03
FROM OF
TO DAi" FEF.T
74/11/09 12 07
75/05/30 12 00
75/06/2? 13 00
75/07/20 13 10
75/08/09
75/08/21
75/10/21
0630
6.N03
OTAL
G/L
0.032
0.010
0.095
0.015
0.015
0.025
0.010
00625
TOT KJEL
n
MG/L
1.200
0.150
2.400
0.190
O.C50K
0.500
0.200
00610
NH3-N
TOTAL
MG/L
0.030
0.035
0.050
0.010
0.010
0.030
0.010
00671
PHOS-DIS
ORTriO
MG/L P
0.005
0.005K
0.005
0.005K
0.005K
0.005K
0.005K
00665
PHOS-TOT
MG/L P
0.010K
0.010
0.010K
0.020
0.010K
0.010
0.010K
K VALUE KNOWN TO BE
LESS THAN INDICATED
------- |