U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
U\KECASITAS
VEimJRA COUMY
CALIFORNIA
EPA REGION IX
WORKING PAPER No, 742
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
LAKECASITAS
VEMURA COUNTY
CALIFORNIA
EPA REGION IX
WORKING PAPER No, 742
KITH THE COOPERATION OF THE
CALIFORNIA STATE WATER RESOURCES CONTROL BOARD
AND THE
CALIFORNIA NATIONAL GUARD
JUNE, 1978
-------
CONI'tNI'S
.Page.
Foreword ii
List of Califoinia Study Lakes iv
Lake and Drainage Area Map v
I. Conclusions
II. Reservoir and Drainage Basin Characteristics
III. Hater Quality Summary
IV. Nutrient Loadings
V. Literature Reviev/ed
VI. Appendices
-------
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.
-------
Ill
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
Crowley
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
Marin
San Diego
Lake
San Luis Obispo
Shasta
Fresno
Mono
El Dorado, Placer, CA;
Carson City, Douglas,
Washoe, NV
Calaveras, Tuolumne
Mono
Mono
-------
Tributary Sampling Site
X Lake Sampling Site
•^' Drainage Area Boundary
-------
LAKE CASITAS
STORE! NO. 0604
I. CONCLUSIONS
A. Trophic Condition*:
Survey data indicate that Lake Casitas is eutrophic. It
ranked twelfth in overall trophic quality when the 24 Cali-
fornia lakes and reservoirs sampled in 1975 were compared
using a combination of six parameters**. Thirteen of the
water bodies had less median total phosphorus, 14 had less
and one had the same median dissolved orthophosphorus, six
had less and one had the same median inorganic nitrogen,
seven had less mean chlorophyll a_, and twelve had greater
mean Secchi disc transparency. Marked depression of dissolved
oxygen occurred with depth at sampling stations 1, 2, and 3
in November.
Survey limnologists did not observe algal concentrations
or macrophytes in the reservoir at any sampling time; however,
copper sulfate is applied occasionally for control of algae
x,
(Bailey, 1977).
B. Rate-Limiting Nutrient:
Due to nutrient changes in the samples during shipment
from the field to the laboratory, the algal assay results are
not considered representative of conditions in the reservoir at the
times the samples were collected.
* Trophic assessment is based on levels of nutrients, dissolved oxygen, and
chlorophyll a; phytoplankton kinds and numbers; and transparency (Allum
et al., 19771]
** See Appendix A.
-------
The reservoir data indicate nitrogen limitation all three
sampling times.
C. Nutrient Controllability:
1. Point sources--No known wastewater treatment plants
impacted Lake Casitas during the sampling year. Septic tanks
serving shoreline dwellings and recreational areas added an
estimated 6.0% of the total phosphorus load, but a shoreline
survey would be needed to determine the significance of those
sources.
The phosphorus loading of 0.04 g/m2 measured during the
sampling year is less than that proposed by Vollenweider
(Vollenweider and Dillon, 1974) as an oligotrophic loading
(see page 12). However, the eutrophic condition of the reservoir
and the apparent loss of phosphorus during the sampling year
(page 10) indicate an underestimation of phosphorus inputs.
This could have been the result of the operation of the Robles-
Casitas diversion canal which has contributed 50 percent of the
water stored in the lake in past years (Johns, 1975). Since
only two samples were taken from the canal, it appears that diversion
of water to Lake Casitas was minimal during the sampling year.
If so, the phosphorus load contributed by the canal was much less
than would be input during a normal diversion year, and a phosphorus
loss could have occurred because of "wash-out" during a period
of abnormally low diversion and resulting low phosphorus input.
-------
2. Non-point sources—The phosphorus contributions of
non-point sources, including direct precipitation, amounted
to 94.0% of the total load. Coyote Creek added 16.7%, and
the ungaged minor tributaries and immediate drainage con-
tributed an estimated 32.1%.
The phosphorus export rate of Coyote Creek was a low
2 kg/km2 during the sampling year (see page 11 ).
-------
II. RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS1"
A. Morphometry"^:
1. Surface area: 10.97 kilometers2.
2. Mean depth: 28.6 meters.
3. Maximum depth: 86.9 meters.
4. Volume: 313.742 x 106 m3.
5. Mean hydraulic retention time: 19.1 years.
B. Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (km2)* (m3/sec)*
Coyote Creek 34.2 0.191
Minor tributaries &
immediate drainage - 44.2 0.331
Totals 78.4 0.522
2. Outlets - Aqueducts - 0.522
Coyote Creek 89.4 -
Totals 89.4** 0.522**
C. Precipitation***:
1. Year of sampling: 26.6 centimeters.
2. Mean annual: 36.2 centimeters.
t Table of metric equivalents—Appendix B.
tt At maximum pool; Martin and Hansen, 1966.
* For limits of accuracy; see Working Paper No. 175, "... Survey Methods,
1973-1976".
** Includes area of reservoir; outflow adjusted to equal sum of inflows.
*** See Working Paper No. 175.
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III. WATER QUALITY SUMMARY
Lake Casitas 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 four stations on the reservoir (see map, page v).
During each visit, a single depth-integrated (4.6 m to surface)
sample was composited from the stations for phytoplankton identifi-
cation 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 ^analysis. The maximum
depths sampled were 60.4 meters at station 1, 52.4 meters at station 2,
46.6 meters at station 3, and 28.0 meters at station 4.
The sampling results are presented in full in Appendix D and are
summarized in the following table.
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PARAMETER
TEMP (C)
OISS OXY (MG/L)
CNDCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/L)
ORTHO P (MG/L)
N02*N03 (MG/L)
AMMONIA (MG/L)
NJEL N (MG/L)
INOWG N (MG/L)
TOTAL N (MG/L)
CHLRH'YL A (UG/L>
SECCHI (METE»S)
A. SUMMARY OP PHYSICAL AND
1ST SAMPLING ( 3/ 7/75)
4 SITES
RANGE
10.6 - 12.1
8.2 - 10.0
579. - 612.
8.1 - 8.5
135. - 148.
?.023 - 0.130
0.012 - 0.026
0.020 - 0.100
0.020 - 0.030
0.200 - 0.600
0.040 - 0.120
0.220 - 0.620
o.a - 4.3
1.8 - 4.4^
CHEMICAL CHARACTERISTICS FOR CASITAS RESERVOIR
STORET CODE 0604
2ND SAMPLING ( 6/24/75)
4 SITES
3RD SAMPLING (11/13/75)
4 SITES
MEAN
11.4
9.0
593.
8.3
143.
0.034
0.0 18
O.C54
0.021
0.263
0.07S
0.317
3.3
2.7
MEDIAN
11.1
8.7
591.
8.2
144.
0.029
0.017
0.060
0.020
0.200
0.0*0
0.280
3.8
2.4
RANGE
12.1
4.8
470.
7.6
139.
0.020
0.004
0.020
0.020
0.200
0.040
0.220
2.0
2.1
- 20.3
- 10.2
- 565.
8.1
- 151.
- 0.396
- 0.037
- 0.200
- 0.050
- 0.600
- 0.250
- 0.620
5.7
2.4
MEAN
16.3
7.8
522.
7.8
145.
0.045
0.014
0.059
0.024
0.310
0.084
0.374
3.8
2.3
MEDIAN
15.9
7.8
515.
7.7
145.
0.031
0.012
0.025
0.020
0.300
0.055
0.355
3.8
2.4
RANGE
12.9
1.0
398.
7.6
130.
0.017
0.005
0.020
0.020
0.200
0.040
0.220
2.1
«»««»*
- 17.4
- 11. b
- 500.
8.4
- 147.
- 0.0*5
- 0.0d2
- 0.270
- 0.030
- 0.200
- 0.290
- 0.470
2. a
-«•»««««•»<
MEAN
16.6
6.3
459.
8.0
138.
0.029
0.018
0.061
0.020
0.200
0.081
0.261
2.4
tOiHHHHHX
MEDIAN
17.3
7.2
460.
8.0
136.
0.021
0.010
0.02U
0.020
0.200
0.040
0.220
2.4
>»«»««»
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B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
03/07/75
Dominant
Genera
1. Chroomonas (?) sp.
2. Ankistrodesmus sp.
3. Scenedesmus sp.
Total
Algal Units
per ml
268
239
89
596
06/24/75
11/13/75
1. Dinobryon sp.
2. Chroomonas (?) sp_.
Total
1. Cyclotella sp.
2. Melosira sp.
3. Chroomonas sp.
4. Cryptomonas sp.
5. Ankistrodesmus sp.
Other genera
Total
2,973
125
3,098
1,453
305
229
152
152
386
2,677
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2. Chlorophyll a^ -
Chlorophyll a
(van)
0.8
4.1
4.8
3.6
3.5
4.1
2.0
5.7
2.8
2.3
2.1
2.5
C. Limiting Nutrient Study:
Due to significant changes in nutrient levels in the
samples during shipment from the field to the laboratory,
the algal assay results are not considered representative of
conditions in the reservoir at the times the samples were col-
lected (03/07/75 and 11/13/75).
The reservoir data indicate nitrogen limitation all three
sampling times. The mean inorganic nitrogen/orthophosphorus
ratios were 4/1 in March, 6/1 in June, and 4/1 in November.
Sampling
Date
03/07/75
06/24/75
11/13/75
Station
Number
1
2
3
4
1
2
3
4
1
2
3
4
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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 when possible from
each of the tributary sites indicated on the map (page v). Sampling
was begun in November, 1974, and was completed in April, 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 reservoir.
In this report, nutrient loads for Coyote Creek at station A-2
were calculated using mean annual concentrations and mean annual flows.
The outlet load was calculated using mean annual concentrations at
station C-l and the mean annual outlet flows.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the mean concen-
trations in Coyote Creek and Santa Ana Creek at stations A-2 and B-l
and the mean annual ZZ flow.
No known wastewater treatment plants impacted Lake Casitas during
the sampling year.
-------
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) -
Coyote Creek 70 16.7
b. Minor tributaries & immediate
drainage (non-point load) - 135 32.1
c. Known municipal STP's - None -
d. Septic tanks* - 25 6.0
e. Known industrial - None
f. Direct precipitation** - 190 45.2
Total 420 100.0
2. Outputs -
Reservoir outlets - Aqueducts 445
Coyote Creek -
Total 445
3. Net annual P loss - 25 kg.
* Estimate based on five picnic areas, eight campgrounds, and 12 shore-
line 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 yjr total
a. Tributaries (non-point load) -
Coyote Creek 2,980 12.3
b. Minor tributaries & immediate
drainage (non-point load) - 8,610 35.4
c. Known municipal STP's - None
d. Septic tanks* - 865 3.6
e. Known industrial - None
f. Direct precipitation** - 11,845 48.7
Total 24,300 100.0
2. Outputs -
Reservoir outlets - Aqueducts 14,865
Coyote Creek -
Total 14,865
3. Net annual N accumulation - 9,435 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Coyote Creek 2 87
E. Mean Nutrient Concentrations in Ungaged Streams:
Mean Total P Mean Total N
Tributary Cone, (mg/1) Cone, (mg/1)
Santa Ana Creek 0.014 1.222
Robles-Casitas Canal 0.020 0.530
* Estimate based on five picnic areas, eight campgrounds, and 12 shore-
line dwellings; see Working Paper No. 175.
** See Working Paper No. 175.
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12
F. 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/m2/yr 0.04 loss* 2.2 0.9
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Lake Casitas:
"Dangerous" (eutrophic loading) 0.24
"Permissible" (oligotrophic loading) 0.12
* There was an apparent loss of phosphorus during the sampling year. This
may have been due to solubilization of previously sedimented phosphorus,
recharge with phosphorus-rich ground water, or (probably) insufficient
tributary sampling.
-------
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.
Bailey, Thomas E., 1977. Personal communication (reviews of pre-
liminary report). CA Water Res. Contr. Bd., Sacramento.
Johns, Gerald E., 1975. Personal communication (water body in-
formation). CA Water Res. Contr. Bd., Sacramento.
Martin, R. 0. R., and Ronald L. Hanson, 1966. Reservoirs in
the United States. Water-Supply Paper 1838, U.S. Geol. Surv.,
Wash., DC.
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.
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14
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
-------
LAKE DATA TO HE USEO In
LAKE
CODE LAKE NAME
ObOl
0603 60CA LAKE
0603 LAKE BPITTON
0604 CASITAS RESERVOIR
0605 CPOHLEY LAKE
0606 DON PEORO RESERVOIR
0607 LAKE ELSINORE
0603 FALLEN LEAF RESERVOIR
0&09 LAKE HENNESSEY
0610 LAKE HENSHA*
06ii IRON GATE RESERVOIR
061* LOPEZ LAKE
0615 LAKE MARY
06 1 t LAKE MENDOCINO
0617 NICASIO RESERVOIR
0618 LOWER OTAY RESERVOIR
0619 LAKE PILLStiURY
0630 SANTA MARGARITA LAKE
062i SHASTA LAKE
0623 SHAVER
0633 SILVER LAKE
063* TULLOCK RESERVOIR
0635 UPPER TrfIN LAKES
0636 LOWER TWIN LAKES
MED I AN
TOTAL P
0.0^0
0.01?
0.067
0.029
0.04*
0.013
0.469
0.007
0.027
0.138
0.184
0.371
0.010
0.023
0.055
0.058
0.022
0.03/
0.021
0.014
0.012
0.025
0.015
0.014
MEDIAN
0.390
Ci.040
0.115
0.050
0.045
0.060
0.120
0.040
0.060
0.070
0.690
0.090
0.040
0.050
0.345
0.180
0.060
0.070
0.060
0.060
0.055
0.060
0.040
0.040
500-
MEAN SEC
408.667
372.633
M>«5.50u
400.250
374.750
381.733
489.214
24.357
41b.OOO
461.000
440.333
372.000
296.000
436.500
482.778
447.250
466.667
400.000
381.542
346.400
356.000
433.000
300.200
246.000
MEAN
CHLOfA
22.383
1.700
4.811
3.192
5.600
3.564
70.572
0.786
4.525
26.783
6.217
8.658
2.550
3.100
6.633
15.933
6.389
9.122
4.087
1.700
1.800
13.878
3.340
2.900
15-
MlN 00
14.600
6.800
11.200
14.000
12.200
11.400
8.000
8.800
15.000
9.800
13.800
15.000
10.600
9.400
9.800
15.000
b.200
14.800
9.000
7.400
7.000
7.400
7.400
11.400
MEDIAN
DISS OKTnU
0.020
0.003
0.04/
0.014
0.034
0.004
0.092
0.005
0.012
0.073
0.124
0.343
0.002
o.ooe
0.013
0.013
0.008
0.014
0.015
0.004
0.003
0.009
0.004
0.003
-------
OF LIKES *1T-. nIGnE4 VALJES
OF LAKES WlTn HlGH£^ VALUES)
LAKE
COOt
ObOl
0602
0603
060**
0605
0607
0608
0609
Ohio
0611
0614
0615
0616
0617
0618
0619
0620
0621
0622
062J
0624
0625
0626
NAM£
A'-'AOOR
BOCA LAKE
LAKE BPITTON
CASITAS RESERVOIR
CROWLEf LAKE
DON PEDRO RESERVOIR
LAKE ELSINORE
FALLEN LEAF RESERVOIR
LAKE HFNNESSEY
LAKE HENSHAW
IRON GATE RESEKVOIR
LOPEZ LAKE
LAKE MARY
LAKE MENDOCINO
NICACIO RESERVOIR
LOWER OTAY RESERVOIR
LAKE PILLS>?URY
SANTA MARGARITA LAKE
SHASTA LAKE
SHAVER
SILVER LAKE
TULLOCK RESERVOIR
IJPPtR TWIN LAKES
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
( ei
( 20
( 4)
( 10)
( 7)
< 19)
< 0)
( 23)
< 11)
( 3)
( 2)
< D
( 22)
( 15)
( 6)
( 5)
( 13)
( 9)
( 14)
( 18)
( 20)
< 12)
( 16)
( 17)
MEDIAN
INOUG N
4
98
22
74
7*
b4
17
87
54
33
0
26
87
70
9
13
41
33
54
41
65
b4
98
87
< 1)
( 22)
( 5)
( 17)
( 18)
( 11)
( 4)
( 19)
< ID
( 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 i
74 1
91 i
30 i
4 1
22 1
9 1
52 1
61 1
83 (
78 (
35 (
87 (
96 (
( 10)
( 16)
( 4)
( 11)
( 15)
( 13)
( 0)
( 23)
( 9)
( 3)
t 6)
1 17)
1 21)
[ 7)
I 1)
[ 5)
1 2)
: 12)
: 14)
: 19)
: 18)
8)
20)
22)
MEAN
CHLORA
•y
91
48
7C
43
61
0
100
52
4
39 i
26 i
83 <
74 I
30 (
13 I
35 I
22 1
57 1
96 1
87 (
17 (
65 (
78 <
( 2)
( 2D
( ID
( 16)
( 10)
( 1*)
( 0)
( 23)
( 12)
( 1)
t 9)
1 6)
! 19)
I 17)
I 7)
1 3)
I 8)
[ 5)
: 13)
: 22)
; 20)
4)
15)
18)
15-
MIN oo
17
100
43
22
30
37
78
70
4 I
54 i
26 i
4 1
48 1
61 <
54 1
4 I
74 (
13 1
65 <
87 (
96 (
87 (
87 (
37 (
( 4)
( 23)
( 10)
( 5)
( 7)
( 8)
( 18)
( 16)
I 0)
( 12)
I 6)
1 0)
! 11)
I 14)
[ 12)
: 0)
: 17)
1 3)
; is)
19)
22)
19)
19)
8)
MEOIAN
DISS ORTHO P
2.0
41
17
37
22
78
9
70
52
13
4 i
0 i
100 i
63 i
46 1
46 1
63 1
37 1
30 1
78 (
91 (
57 <
78 <
91 (
( 6)
( 20)
( 4)
( 8)
( 5)
( 17)
( 2)
( 16)
I 12)
( 3)
( 1)
1 0)
1 23)
1 14)
I 10)
! 10)
1 14)
[ 8)
! 7)
17)
20)
13)
17)
20)
INDEX
Nu
134
539
164
294
268
370
104
527
249
130
104
134
505
363
169
120
279
196
328
463
506
302
485
463
-------
LAKES RANKED BY INOCX. NOS.
WANK LAKE CODE LAKE NAME INOEX 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 T*IN LAKES UBS
6 0626 LOWER TWIN LAKES 463
7 0622 SHAVER 463
8 0606 DON PEORO RESERVOIR 370
9 0616 LAKE MENOOCINO 363
10 0621 SHASTA LAKE 328
11 0624 TULLOCK RESERVOIR 302
12 060<» CASITAS RESERVOIR 294
13 0619 LAKE PILLSBURY 279
It 0605 CROrfLEY LAKE 268
15 0609 LAKE HENNESSEY 249
Ib 0620 SANTA MARGARITA LAKE 196
17 0617 NICASIO RESERVOIR 169
18 0603 LAKE 6RITTON 164
19 0614 LOPEZ LAKE 134
20 0601 AMAOOR RESERVOIR 134
21 0610 LAKE HENSHA* 130
22 0618 LOHER OTAY RESERVOIR 120
23 0607 LAKE ELSINORE 104
24 0611 IRON GATE RESERVOIR 104
-------
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
09/24/76
LAKE CODE 0604
LAKE CASITAS
TOTAL DRAINAGE AREA OF LAKEtSQ KM)
89.4
SUB-ORA1NAGE
TRIBUTARY AREA(SO KM)
JAN
FE8
0604A1
0604A2
0604ZZ
89.4
34.2
55.2
0.0 0.0
U.583 0.926
0.997 1.608
MAR
0.0
0.213
0.371
APR
0.0
0.138
0.234
MAY
0.0
0.048
0.080
NORMALIZED FLOwS(CMS)
JUN JUL AUG
0.0
0.029
0.042
0.0
0.017
0.021
0.0
0.010
0.011
SEP
0.0
0.003
0.003
OCT
0.0
0.009
0.01k
NOV
0.0
0.111
0.222
DEC
MEAN
0.0 0.0
0.253 0.191
0.462 0.331
SUMMARY
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUB-DSAINAGE AREAS =
89.4
89.4
TOTAL FLOW IN
TOTAL FLOW OUT
0.0
MEAN MONTHLY FLOWS AND DAILY FLOWS(CMS)
TRIBUTARY MONTH YEAR MEAN FLOW DAY
0604A1
0604A2
0604ZZ
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
?
3
4
5
6
7
8
9
10
11
1?
1
2
3
4
5
6
7
a
9
10
74
7<*
75
75
75
75
75
75
75
76
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
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
3.011
0.221
0.033
0.249
C.7b7
0.143
0.072
0.046
0.024
0.010
0.008
0.007
0.011
0.411
0.085
0.496
1.47?
0.283
0.127
0.057
0.04?
0.003
0.008
0.006
16
23
13
16
8
25
23
13
FLOW DAY
0.0
0.0
0.0
FLOW DAY
FLOW
0.012
0.037
0.028
0.221
0. 150
27
0.110
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 76/09/34
DATE
FROM
TO
75/03/07
75/06/24
75/11/13
TIME
OF
DAY
10
10
10
10
10
10
10
12
12
12
12
12
12
12
12
09
09
09
09
09
09
09
09
40
40
40
40
40
40
40
20
20
20
20
20
20
20
20
00
00
06
00
00
00
00
00
DEPTH
FEET
0000
0005
0015
0035
0070
0105
0135
0000
0005
0015
0040
0030
0120
0160
0198
0000
0005
0019
0050
0095
0140
0160
0197
00010
WATER
TEMP
CENT
10.6
11.1
11.0
11.0
11.0
10.9
10.9
19.2
19.1
18.6
15.9
14.7
13.1
12.2
12.1
17.3
17.3
17.3
17.3
17.3
16.6
13.1
12.9
00300
DO
MG/L
8.8
8.4
8.6
8.6
8.6
8.6
8.4
9.4
9.6
9.6
8.2
7.4
6.3
5.4
4*8
7.0
7.2
7.0
7.0
6.8
5.4
2.0
1.4
00077
TRANSP CM
SECCHI FIELD
INCHES MI
174
84
060401
34 22 25.0 119 20 15.0 3
CASITAS RESERVOIR
06111 CALIFORNIA
140591
11EPALES
0139 FEET
2111202
DEPTH CLASS 00
94
TVY
MHO
585
591
608
605
605
598
588
565
565
550
520
510
500
090
490
459
457
500
064
475
441
398
409
00400
PH
su
8.30
8.30
8.20
8.20
8.20
8.20
8.20
8. 1C
8.00
8.00
7.90
7.80
7.80
7.70
7.70
8.45
8.25
8.10
8.00
7.95
8.00
7.80
7.60
00410
T ALK
CAC03
MG/L
148
147
146
145
145
145
146
150
140
143
141
144
143
104
14J
141
139
141
143
141
102
143
143
00610
NH3-N
TOTAL
MG/L
0.030
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.040
0.020
0.020
0.020K
0.020
0.020K
0.020K
0.020K
0.020K
O.C20K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.500
0.200
0.200K
0.200
0.200
0.400
0.300
0.600
0.400
0.500
0.300
0.300
0.400
0.300
0.300
0.200K
0.200K
0.200K
0.200K
0.200K
0.200
0.200K
0.200K
00630
N02&N03
N-TOTAL
MG/L
0.050
0.060
0.070
0.080
0.030
0.030
0.090
0.020K
0.020
0.020K
0.050
0.060
0.110
0.160
0.190
0.020
0.020
0.020
0.02&
0.02U
0.120
0.240
0.270
00671
PHOS-DIS
OKTriO
MG/L P
0.022
0.022
0.022
0.023
0.024
0.024
0.024
0.010
0.006
0.006
0.014
0.025
0.027
0.032
0.024
0.021
0.009
0.010
0.011
0.014
0.033
0.042
0.045
K* VALUK KNOWN TO BE. LESS
THAN INDICATED
-------
STOSET RETRIEVAL DATE 76/09/24
060401
34 22 25.0 119 20 15.0
CASITAS RESERVOIR
06111 CALIFORNIA
140591
11EPALES
0139 FEET
2111202
DEPTH CLASS 00
00665
DATE TIME DEPTH PHOS-TOT
FROM OF
TO DAY FEET MG/L P
75/03/07
75/06/24
75/11/13
10
10
10
10
10
10
10
12
12
12
12
12
12
12
12
09
09
09
09
09
09
09
09
40
40
40
40
40
40
40
20
20
?0
20
?0
20
?0
20
00
00
00
00
00
00
00
00
0000
0005
0015
0035
0070
0105
0135
0000
0005
0015
0040
00"30
0120
0160
0198
0000
0005
0019
0050
0095
0140
0160
0197
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.033
.026
.029
.030
.029
.029
.029
.035
.028
.027
.023
.036
.037
.041
.062
.030
.018
.019
.019
.022
.033
.057
.066
32217
CHLRPHYL
A
UG/L
0.8
00031
INCDT LT
REMNING
PERCENT
3.5
2.8
-------
STORET RETRIEVAL DATE 76/09/24
DATE
FROM
TO
75/03/07
75/06/24
75/11/13
TIME
OF
DAY
11
11
11
11
11
11
11
11
15
15
15
15
15
15
15
15
09
09
09
09
09
09
09
42
42
42
42
42
42
42
42
10
10
10
10
10
10
10
10
30
30
30
30
30
30
30
DEPTH
FEET
0000
0005
0015
0040
0070
0100
0110
0130
0000
0005
0015
0040
0070
0100
0135
0172
0000
0005
0019
0050
0095
0140
0162
00010
WATER
TEMP
CENT
11.6
11.7
11.8
11.2
11.0
10.9
10.9
10.9
19.8
19.8
19.5
15.9
15.0
14.3
12.6
12.3
17.3
17.3
17.3
17.3
17.3
15.4
13.1
00300
DO
MG/L
10.0
9.8
9.6
8.8
8.6
8.4
8.2
8.2
10.2
9.4
7.8
6.8
6.2
4.8
4.8
7.2
7.2
8.4
7.0
7.2
3.2
1.4
00077
TRANSP
SECCHI
INCHES
96
96
00094
CNOUCTVY
FIELD
MICROMHO
588
604
583
581
579
583
586
597
555
555
535
510
500
490
470
470
460
458
490
492
472
439
428
060402
34 22 25.0 119 20 15.0 3
CASITAS RESERVOIR
06111 CALIFORNIA
140591
11EPALES
0144 FEET
2111202
DEPTH CLASS 00
94
TVY
MHO
588
604
583
581
579
583
586
597
555
555
535
510
500
490
470
470
460
458
490
492
472
439
428
00400
PH
SU
8.50
8.50
8.45
8.20
8.20
8.20
8.20
8.20
7.70
7.80
7.80
7.80
7.70
7.60
7.60
7.60
8.00
8.10
8.40
8.10
8.00
7.70
7.60
00410
T ALN
CAC03
MG/L
145
144
143
144
143
145
146
135
140
142
139
142
144
145
144
145
134
136
138
134
138
146
147
00610
NH3-N
TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020
0.020K
0.020K
0.020
0.020
0.030
0.050
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.030
00625
TOT K.JEL
N
MG/L
0.400
0.300
0.300
0.300
0.200K
0.200K
0.200K
0.200K
0.600
0.500
0.300
0.300
0.200K
0.200K
0.200
0.300
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
0.060
0.080
0.080
0.080
0.100
0.020K
0.020K
0.020K
0.040
0.040
0.030
0-. 180
0.200
0.030
0.020K
0.020K
0.020
0.020
0.160
0.220
00671
PHOS-DIS
ORTHO
MG/L P
0.014
0.014
0.015
0.026
0.024
0.023
0.023
0.023
0.007
0.006
0.006
0.014
0.016
0.017
0.037
0.027
0.009
0.006
0.006
0.012
0.013
0.031
0.031
K* VALUE KNOWN TO BE LESS
THAN IMOICflTEO
-------
STORET RETRIEVAL DATE 76/09/24
060*02
34 22 25.0 119 20 15.0
CASITAS RESERVOIR
06111 CALIFORNIA
140591
HEPALES
014<» FEET
2111202
DtPTH CLASS 00
00665 32217 00031
DATE
FROM
TO
75/03/07
75/06/24
75/11/13
TIME DEPTH
OF
DAY
11
11
11
11
11
11
11
11
15
15
15
15
15
15
15
15
09
09
09
09
09
09
09
42
42
42
FEET
0000
0005
0015
42 0040
42
42
42
42
10
10
10
10
10
10
10
10
30
30
30
30
30
30
30
0070
0100
0110
0130
0000
0005
0015
0040
0070
0)00
0135
0172
0000
0005
0019
0050
0095
0140
0162
PHOS-TOT CriLRPHYL INCDT LT
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
d
0
0
*
•
V
*
•
•
•
•
•
*
•
•
•
•
•
•
•
•
•
•
•
*
•
A REMNING
P UG/L PERCENT
027 4.1
029
031
029
029
029
027
027
021 4.1
024
027
027
031
031
045
396
020 2.3
017
018
022
023
039
042
-------
STORET RETRIEVAL DATE 76/09/24
DATE
FROM
TO
75/03/07
75/06/24
75/1 1/13
TIME
OF
DAY
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
10
10
10
10
10
10
10
15
15
15
15
15
15
15
15
35
35
35
35
35
35
35
15
15
15
15
15
15
15
DEPTH
FEET
0000
0005
0015
0030
0055
0085
0115
0145
0000
0005
0015
0040
0080
0115
0151
0000
0005
0021
0050
0095
0140
0153
00010
WATER
TEMP
CENT
12.0
12.0
12.1
11.9
11.5
11.1
11.1
11.1
20.2
19.7
17.7
15.6
14.7
13.6
12.6
17.4
17.3
17.3
17.3
17.3
16.4
13.6
00300
DO
MG/L
10.0
10.0
10.0
9.4
8.6
8.2
8.6
8.6
9.6
10.2
9.2
7.8
7.6
6.0
5.0
7.4
7.2
7.0
7.2
7.2
4.4
1.0
00077
TRANSP
SECCHI
INCHES
90
90
00094
CNDUCTVY
FIELD
MICROMHO
589
593
589
599
604
603
612
586
560
555
540
525
515
505
500
469
465
451
481
481
424
450
060403
34 23 53.0 119 20 54.0 3
CASITAS RESERVOIR
06111 CALIFORNIA
140591
11EPALES
0157 FEET
2111202
DEPTH CLASS 00
94
:TVY
i
iMHO
589
593
589
599
604
603
612
586
560
555
540
525
515
505
500
469
465
451
481
481
424
450
00400
PH
SU
8.50
8.50
8.50
8.45
8.20
8.20
8.15
8.15
7.70
7.80
7.80
7.70
7.70
7.60
7.70
8.10
3.00
8.00
8.00
8.00
7.80
7.80
00410
T ALK
CAC03
MG/L
144
145
141
141
142
141
ItO
140
146
147
147
149
149
151
151
131
133
130
131
131
135
147
00610
NH3-N
TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.020
0.030
0.020
0.020
0.030
0.020
0.030
0.030
0.030
0.020
0.020
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
0.300
0.200K
0.200K
0.400
0.200
0.200
0.200K
0.200
0.200
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
0.050
0.070
0.080
0.080
0.030
0.020K
0.020K
0.020
0.030
0.090
0.170
0.020K
0.020
0.020K
0.020K
0.020K
0.080
0.160
00671
PHOS-OIS
OHTHO
MG/L P
0.014
0.014
0.014
0.013
0.017
0.012
0.017
0.016
0.007
0.004
0.006
0.010
0.013
0.021
0.024
0.008
0.007
0.009
0.010
0.013
0.039
0.082
K* VALUF KNOWN TO tit LnSS
THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/09/24
060403
34 33 53.0 119 20 54.0 3
CASITAS RESERVOIR
06111 CALIFORNIA
140591
11EPALES 2111202
0157 FEET DEPTH CLASS 00
DATE TIME DEPTt
FROM OF
TO DAY FEET
75/03/07
75/06/24
75/11/13
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
10
10
10
10
10
10
10
15 0000
15 0005
15 0015
15 0030
15 0055
15 0085
15 0115
15 0145
35 0000
35 0005
35 0015
35 0040
35 0080
35 0115
35 0151
15 0000
15 0005
15 0021
15 0050
15 0095
15 0140
15 0153
0665 32217
'S-TOT CHLRPHYL
A
/L P UG/L
0.02rt 4.8
0.026
0.028
0.025
0.026
0.130
0.036
0.056
0.038 2.0
0.032
0.030
0.030
0.031
0.039
0.045
0.023 2.1
0.017
0.018
0.019
0.023
0.044
0.095
00031
INCOT LT
REMNING
PERCENT
-------
STORET RETRIEVAL DATE 76/09/24
DATE
FROM
TO
75/03/07
75/06/23
75/11/13
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
14
14
14
14
14
14
14
16
16
16
16
16
16
09
09
09
09
09
09
45
45
45
45
45
45
45
05
05
05
05
05
05
50
50
50
SO
50
SO
0000
0005
0015
0035
0050
0070
0085
0000
0005
0015
0040
0065
0092
0000
0005
0016
0035
0060
0088
CENT
12.
12.
12.
11.
11.
11.
11.
20.
20.
19.
15.
15.
14.
17.
17.
17.
17.
17.
16.
0
1
0
7
5
1
1
3
3
1
9
2
7
4
3
3
3
2
9
00300
DO
MG/L
9.
9.
10.
10.
9.
9.
8.
9.
10.
10.
8.
7.
6.
8.
7.
7.
7.
7.
11.
8
2
0
0
2
0
4
8
0
0
0
2
8
2
8
8
6
4
6
00077
TRANSP
SECChI
INCHES
72
96
00094
CNDUCTVY
FIELD
MICROMHO
590
590
601
586
595
594
589
560
560
545
510
500
495
471
451
431
448
494
490
060404
34 2>* 07.0 119 20 27.0 3
CASITAS RESERVOIR
06111 CALIFORNIA
140591
11EPALES 2111202
0090 FEET DEPTH CLASS 00
94
TVY
1
MHO
590
590
601
586
595
594
589
560
560
545
510
500
495
471
451
431
448
494
490
00400
PH
su
8.50
8.50
8.50
8.40
8.35
8.20
8.20
7.80
7.80
7.80
7.70
7.70
7.70
8.00
8.10
8.10
8.10
6.10
8.10
00410
T ALK
CAC03
MG/L
138
140
141
143
145
146
145
144
145
145
146
145
136
136
136
136
135
135
00610
NH3-N
TOTAL
MG/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020
0.020
0.030
0.020
0.020K
0.030
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.600
0.300
0.200K
0.200
0.300
0.200
0.200
0.500
0.300
0.300
0.200
0.200K
0.200K
0.200
0.200K
0.200K
0.200K
0.200K
0.200K
00630
N026.N03
N-TOTAL
MG/L
0.020K
0.020K
0.020K
0.020
0.050
0.080
0.080
0.020K
0.020K
0.020K
0.020K
0.020
0.040
0.020K
0.020K
0.020K
0.020K
0.020K
00671
PHOS-DIS
ORTHO
MG/L P
0.013
0.013
0.012
0.015
0.015
0.022
0.022
0.004
0.012
0.009
0.009
0.013
0.015
0.008
0.007
0.006
0.005
0.006
K* VALUE KNOriM TO RF
THAN INDIC/VTRO
-------
STOREF RETRIEVAL DATE 76/09/24
060404
34 24 07.0 119 20 27.0 3
CASITAS RESERVOIR
06111 CALIFORNIA
140591
11EPALES 2111202
0090 FEET DEPTH CLASS 00
00665
DATE TIME DEPTH PHOS-TOT
FROM OF
TO DAY FEET MG/L P
75/03/07
75/06/23
75/11/13
14
14
14
14
14
14
14
16
16
16
16
16
16
09
09
09
09
09
09
45
45
45
45
45
45
45
05
05
05
05
05
05
50
50
50
50
SO
50
0000
0005
0015
0035
0050
0070
0035
0000
0005
0015
0040
0065
0092
0000
0005
0016
0035
0060
0088
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.029
.029
.023
.024
.036
.040
.037
.031
.023
.022
.024
.020
.039
.02^
.019
.019
.0?0
.019
.019
32217
CHLRPHYL
A
UG/L
3.6
00031
INCDT LT
REMNING
PERCENT
5.7
2.5
-------
APPENDIX E
TRIBUTARY DATA
-------
STORET RETRIEVAL DATE 76/09/24
DATE TIME DEPTH N025.N03
FROM OF
TO DAY FEET
74/11/16
7<*/12/08
75/01/25
75/03/23
75/04/13
75/04/27
12
09
13
12
12
11
15
00
00
00
00
00
0604A2
34 25 00.0 119 22 00.0 4
COYOTE CREEK
06 VENTURA CO MAP
T/LAKE CASITAS 140591
CASITA5 PASS RD AT GOING STATION
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
5.N03
OTAL
G/L
0.030
0.248
0.056
0.10C
0.045
0.015
00625
TOT KJEL
N
MG/L
0.500
0.200
0.200
0.500
0.725
0.350
00610
NH3-N
TOTAL
MG/L
0.005K
O.C08K
0.005K
0.010
0.020
0.015
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.005
0.005K
0.005K
0.010
0.005K
00665
PHOS-TOT
MG/L P
0.010
0.010K
0.010K
0.010K
0.025
0.010
K* VALUE KNOWN TO BE LESS
THAN
-------
STORE! RETRIEVAL DATE 76/09/24
060481
34 25 10.0 119 21 30.0 4
SANTA ANA WEEK
06 VENTURA CO HWY
T/LAKE CASITAS
BALDWIN »?u SRDG .i M w SANTA ANA «D JCT
11£PALES 3111204
0000 FEET DEPTH CLASS 00
DATE TIME OEPTrt N02&N03
FROM OF
TO OAY FEET
74/12/08 08 ?0
75/01/25 12 35
75/03/23 10 30
75/04/13 10 30
75/04/27 10 00
0630
&N03
OTAL
G/L
0.336
0.040
0.015
0.010
0.010
00625
TOT KJEL
N
HG/L
2.100
0.20C
1.700
0.650
1.050
00610
NH3-N
TOTAL
MG/L
C.045
0.005.-^
0.015
C.025
0.020
00671
PHOS-OIS
ORTHO
MG/L P
0.015
0.020
0.005K
0.010
0.010
00665
PHOS-TOT
MG/L P
0.020
0.020
0.010K
0.010
0.010
K» VALUc KNOn'N TO
THAN IMDICATED
LESS
-------
STORET RETRIEVAL DATE 76/09/34
0604C1
3* 22 05.0 119 20 00.0 4
MUNICIPLE WATER SUPPLY1 INTAKE
06 VENTURA CO MAP
0/LAKE CASITAS 140591
AT BASE OF CASITAS DAM
11EPALES 3111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
74/11/lb
74/12/08
75/01/25
75/03/23
75/04/13
75/04/27
TIME DEPTH
OF
DAY
10
08
14
09
09
09
00630
N02&N03
N-TOTAL
FEET
40
00
35
00
00
00
MG/L
0.
0.
0.
0.
0.
0.
018
043
064
086
105
095
00625
TOT KJEL
N
MG/L
0.700
1.100
0.200
1.000
1.000
1.000
00610
NH3-N
TOTAL
MG/L
0
0
0
0
0
0
.020
.030
.015
.015
.030
.020
00671
PHOS-DIS
00665
PHOS-TOT
ORTHO
MG/L
0.
0.
0.
o.
0.
c.
p
010
020
026
040
030
015
MG/L
0.
0.
0.
0.
0.
0.
P
020
020
030
040
030
020
-------
STORE! RETRIEVAL DATE 76/09/24
00630
DATE TIME DEPTH N02&N03
FROM OF N-TOTAL
TO OAY FEET MG/L
75/03/23 10 00
75/04/13 10 00
0.046
0 .-015
00625
TOT KJEL
N
MG/L
0.650
0.350
0604D1
34 25 00.0 119 20 10.0 4
ROdLES-CASITAS CANAL
06 VENTURA CO MAP
T/LAKE CASITAS 140591
ST HrfY 150 7 MI NW OF OAKVIEW
HEPALES 2111204
0000 FEET DEPTH CLASS 00
00610
NH3-N
TOTAL
MG/L
0.018
0.015
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.010
00665
PHOS-TOT
MG/L P
0.010
0.030
------- |