U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LAKE HAVASU
MOHAVE COUMY, ARIZONA
SAN BERNADINO COUNTY, CALIFORNIA
EPA REGION IX
WORKING PAPER No, 728
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
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REPORT
ON
LAI€HAVASU
MOHAVE COUNTY, ARIZONA
SAN BERNADINO COUNTY, CALIFORNIA
EPA REGION IX
WORKING PAPER No, 728
WITH THE COOPERATION OF THE
ARIZONA STATE DEPARTMENT OF HEALTH
AND THE
ARIZONA NATIONAL GUARD
AUGUST, 1977
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REPORT ON LAKE HAVASU
MOHAVE COUNTY, ARIZONA
SAN BERNADINO COUNTY, CALIFORNIA
EPA REGION IX
by
National Eutrophication Survey
Water and Land Quality Branch
Monitoring Operations Division
Environmental Monitoring & Support Laboratory
Las Vegas, Nevada
and
Special Studies Branch
Corvallis Environmental Research Laboratory
Corvallis, Oregon
Working Paper No. 728
OFFICE OF RESEARCH AND DEVELOPMENT
U.S. ENVIRONMENTAL PROTECTION AGENCY
August 1977
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1
CONTENTS
Page
Foreword i i
List of Arizona Study Lakes iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 4
III. Lake Water Quality Summary 6
IV. Nutrient Loadings 12
V. Literature Reviewed 18
VI. Appendices 19
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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.
pBJEmVES
The Survey was designed to develop, in conjunction with state
srwlranmantal agencies, Information on nutrient sources, concen-
ts'at1<£?:st and impact on selected freshwater lakes as a basis for
•.•'ennui£t1 no comprehensive and coordinated national, regional, and
state inshagernent practices relating to point source discharge
••aductlen and nonpoint source pollution abatement in lake water-
sheds.
vha mathematical and statistical procedures selected for the
^rs eu*7T;phi cation analysis are based on related concepts
A generalized representation or model relating
soLsrsas, concentrations, and impacts can be
cor.structacl.
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
re" a tec; nutrients*
rfith such a transformationt an assessment of tha
potential for eutrophication control can be made.
Ir. this report, the first stags of evaluation of lake and
watershed data collected from the study lake and its drainage
bris-'n Is documented. The report is formatted to provide state
arivlroniiienta! agsncies with specific information for basin
planning [§303(e)], water quality criteria/standards review
[§2Q3(e)1s clean lakes [§314(a,b)J, and water quality monitoring
;"§1U6 ar.d §305(b)] activities mandated by the Federal Water
PuT'utlon Control Act Amendments of 1972.
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111
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condition
are being made to advance the rationale and data base for refine-
ment of nutrient water quality criteria for the Nation's freshwater
lakes. Likewise, multivariate evaluations for the relationships
between land use, nutrient export, and trophic condition, by lake
class or use, are being developed to assist in the formulation of
planning guidelines and policies by the U.S. Environmental Protection
Agency and to augment plans implementation by the states.
ACKNOWLEDGMENTS
The staff of the National Eutrophication Survey (Office of
Research and Development, U.S. Environmental Protection Agency)
expresses sincere appreciation to the Arizona State Department
of Health for professional involvement, to the Arizona National
Guard for conducting the tributary sampling phase of the Survey,
and to those Arizona wastewater treatment plant operators who
provided effluent samples and flow data.
The staffs of the Bureau of Water Quality Control, Environ-
mental Health Services, Arizona State Department of Health, and
the Arizona Game and Fish Department, provided invaluable lake
documentation and counsel during the Survey, reviewed the pre-
liminary reports and provided critiques most useful in the
preparation of this Working Paper Series.
Major General John G. Smith, the Adjutant General of Arizona,
and Project Officer Colonel Richard A. Colson, who directed the
volunteer efforts of the Arizona National Guardsmen, are also
gratefully acknowledged for their assistance to the Survey.
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IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF ARIZONA
Big Lake
Foe Is Hollow Lake
Lake Havasu
Luna Lake
lyrf.fin Lake
!.,ako Mo have
Laka Pleasant
Lake Powell
Rainbow Lake
Tl'ificsore Roosevelt Lake
San Carlos Reservoir
COUNTY
Apache
Navajo
Mohave (San Bernadino
in CA)
Apache
Apache
Mohave (Clark in NV)
Yavapai, Maricopa
Coconino (Kane, Garfield,
San Juan in UT)
Navajo
Gil a
Graham, Gila, Pinal
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/
\
( ,
s >
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REPORT ON LAKE HAVASU, ARIZONA
STORE! NO. 0403
CONCLUSIONS
A. Trophic Condition:*
Survey data indicate that Lake Havasu is mesotrophic.
Chlorophyll a_ values in the lake ranged from 1.0 yg/1 in
February to 8.2 yg/1 in June, with a mean of 3.9 yg/1.
Potential for primary production as measured by algal assay
control yields was low. Lake water transparency was generally
good during June sampling but low on the February and November
sampling occasions. Of the 11 Arizona lakes sampled in 1975,
9 had higher median total phosphorus values (0.015 mg/1), 2 had
higher median inorganic nitrogen levels (0.170 mg/1), and 9 had
higher median orthophosphorus values (0.005 mg/1) than Lake
Havasu.
Survey limnologists did not report any problem algal blooms
or macrophyte growths during their visits to the lake. Other
sources (The Division of International Engineering Co., Inc.
and Metcalf & Eddy Inc., 1976; Utah State University, 1975)
indicate that salinity is the major water quality factor in the
Colorado River basin, rather than nutrient-related problems.
*See Appendix E.
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B. Rate-Limiting Nutrient:
The algal assay results indicate that Lake Havasu was limited
by available phosphorus levels. The lake data further suggest
primary limitation by phosphorus in Lake Havasu throughout the
sampling year.
C. Nutrient Controllability:
1. Point sources -
During the sampling year, the measured point sources
directly impacting Lake Havasu were calculated to contribute
2.7% of the total phosphorus load. The wastewater treatment
plant at Needles contributed 2.5% and plants at Catfish Trailer
Park and Cattail Cove State Park each contributed 0.1%. The
Division of International Engineering Co., Inc. and Metcalf
& Eddy Inc. (1976) report that the community of Lake Havasu
also has several municipal treatment facilities which divert
their discharge waters into local irrigational use; how much,
if any, of these discharges eventually reach Lake Havasu is
not known at this time.
2
The present phosphorus loading of 3.64 g P/m /yr is almost
twice that proposed by Vollenweider (1975) as "eutrophic" for
a lake with such volume and hydraulic retention time. The
combination of a mesotrophic condition and high phosphorus
loading is possible because Vollenweider's model probably is
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not applicable to lakes in which epilimnetic light penetration
is substantially reduced by the presence of suspended sediments
in the surface waters, as in Lake Havasu during spring and
fall. In any case, the future addition of point source con-
tributions should be carefully evaluated as to their effect
on the existing water quality of Lake Havasu.
2. Nonpoint sources -
Nonpoint sources, including precipitation, contributed
97.3% of the total phosphorus input during the year to Lake
Havasu. The Colorado River contributed 96.6% and ungaged
tributaries contributed an estimated 0.2%.
The phosphorus export rates of the tributaries flowing
into Lake Havasu (Section IV-D) are equal to the Colorado River
export of upstream Lake Mohave*.
*See Working Paper No. 731.
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II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
Lake and drainage basin characteristics are itemized below.
Lake morphometry data were provided by Ned Rathbun (1974); average
surface area and average volume are indicated. Tributary flow
data were provided by the Arizona District Office of the U.S.
Geological Survey (USGS). Outlet drainage area includes the lake
surface area. Mean hydraulic retention time was obtained by
dividing the lake volume by mean flow of the outlet. Precipitation
values are estimated by methods as outlined in National Eutrophi-
cation Survey (NES) Working Paper No. 175. A table of metric/English
conversions is included as Appendix A.
a. Lake Morphometry:
9
1. Surface area: 77.30 km .
2. Mean depth: 9.2 meters.
3. Maximum depth: 137.2 meters.
4. Volume: 713.080 x 106 m3.
5. Mean hydraulic retention time: 32 days.
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B. Tributary and Outlet:
(See Appendix B for flow data)
1. Tributaries -
Drainage? Mean flow
Name area (km ) (m3/$ec)
A-2 Colorado River 446,256.8 305.29
B-l Gene Wash 17.6 0.01
Minor tributaries and
immediate drainage - 16,757.7 0.72
Total 463,032.1 306.02
2. Outlet - A-l Colorado River 463,091.8 260.69
C. Precipitation:
1. Year of sampling: 7.4 cm.
2. Mean annual: 9.7 cm.
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III. LAKE WATER QUALITY SUMMARY
take Havasu was sampled three times during the open-water
season cf 1975 by means of a pontoon-equipped Huey helicopter. Each
t'irrie, samples for physical and chemical parameters were collected
from eleven stations on the lake and from one or more depths at each
staticn (see map, page v). During each visit, depth-integrated
samples were collected from each station for chlorophyll a_ analysis
and phytoplankton identification and enumeration. During the first
and last visits, 18.9-liter depth-Integrated samples were composited
fur algal assays. Maximum depths sampled were as follows:
Stat 1pn._Number Maximum Depth (meters)
01 17.4
C2 8.5
03 17.1
04 18.6
05 13.1
06 10.1
07 10.7
08 10.4
09 7.3
1C 7.0
11 1.5
For t» more detailed explantion of NES methods, see NES Working Paper
No. 175.
The results obtained are presented in full in Appendix C and are
summarized in III-A for waters at the surface and at the maximum depth
for each site. Results of the phytoplankton counts and chlorophyll a_
determinations are included in III-B. Results of the limiting nutrient
study are presented in III-C.
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cor>-: «• • •»
•J i. x
CHARACTERISTICS
f 6/13/75 )
( 11/19/75 )
oicc
s; o a -s - 11
PA'-Awt jt^ ,.^ --'.-.-it V;«TMN
VAX OFPTr1<>« 11 '.3- 10.? =1.3
DISSOi. VFO OXV'-t'-i f *"-/!. I
0 . - 1 . K "' r>E P T -1 ? I l^oS-ll.'J 11. £
MAX OEPTH»«> 11 9.-I- 11.4 1".-
CONDUCTIVITv (MMM'i-7)
o.-i.i i« f E^TI-I -? i 70-1. -1^12. i)^s.
MAX OFPTH«o 11 76S.-1 1 2b. I'i7fr.
n.-K- M ~'Ei-T™ Jl -1.4- n.*> w,0b
TOTAL A!_rC4LINTTv C':-/. )
MAX OF»Tho» 10 131.- 139. 137.
TOTAL P <"G/L>
O.-l.S «« i.EPTH ?1 (P. 013-0. 027 0.017
«AX nPPTri«° 10 '). 012-0. 041 O.OIi.
DISSOLVED O^THO P (Mfi/L)
0.-l.= •>! f'E=>TH ?1 0.003-0.021 O.Tib
WAX DEPTH"** 10 O.O'^S-0 .020 O.nnb
O.-l.c M nEf-T- '1 '.o-m-ft.??o O.lsu
MA> 0CPTH»«- Id i».l?0-0.220 D.16S
AMMONIA (Mf'/L)
o.-i.t M nE^-Tri ---i '.. o^o-o.. )^o O.OPU
MAX nEPT"»» 10 0.020-0.030 O.O'O
n.-i.^ •••' nEnTf 3i n. 400-0. -loo o.*>nr-
i"AX DFPT^-110 10 O.SIO-O.hOO 0 . - 1 1
nr^T»
- .. ^ '^ -
( •• t r.-. -*<)
f.?- i.->
1 .5- IB.,3
0.0- 1.-^
1.3- Ho?
0.0- !.->
l.b- 1^.3
r-.o- i.-.
l.S- M.3
n.n- i .->
1.5- in. *
n.o- l.s
1.5- 1*.J
0.0- 1.5
1.5- 18.3
n.n- l.s
l.b- 1«.J
0.0- 1.5
1 .b- IM. <
0.0- l.S
1 .5- l-i.3
N* «4MPK
1-i U.9-
11 17o7-
11 4]^-
25.S
8.8
11 ^^2. -1263.
11 7.8-
19 134.-
11 134.-
19 0.009-0
11 '1.010-0
19 0.006-0
1) 0.004-0
r- f'.iiu-o
11 n. 120-0
19 0.040-0
11 0.040-0
14 '(.300-1
11 0.^00-0
80b
142.
.030
.027
.030
.030
.?20
.220
.100
.160
.?00
.700
MEDIAN
24.0
18.6
3.0
7.2
1332»
1177.
fl.2
137.
137.
0.01 1
0.017
0.011
0.013
0.140
0.050
0.080
0.600
0.600
DfcPTN
(METENS) N->
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
1.5
17.4
1.5
17,4
1.5
17.4
17.4
1.5
17.4
1.5
17.4
17.4
1.5
17.4
1.5
17.4
l.b
17.4
11
11
?2
11
2?
11
11
11
22
11
11
11
2?
11
Sooo
RANGE
12.2= 14..B
11.9- 16.8
9.0- 10.2
8,8- in.o
757.- 837.
765.- 837»
«. 0- 8,3
123.- 142.
0.013-0.034
0.012-0.043
0.002-0.013
0.002-0.010
0.100-0.170
0. 100-0.420
0.020-0.030
0.020-0.030
0.200-0.300
0.200-0.600
~ 11
13.2
13.1
9.6
9.6
794.
799.
a. 3
H.3
133.
133.
0.017
0.016
0.003
o.ooa
0.140
0.130
0.020
0.020
0.200
0.200
DEPTH
(ME.TEPS)
0.0-
1.5-
0.0-
1.5-
0.0-
1.5-
6.0-
1.5-
0.0-
1.5-
0.0-
1.5-
0.0-
1.5-
0.0-
1.5-
0.0-
1.5-
0.0-
l.S-
1.5
18.6
1.5
IS. 6
18.6
1.5
18.6
1.5
18.6
1.5
18.6
1.5
18.6
1.5
18.6
1.5
18.6
1.5
18.6
0.--
1.2-
4.2
11
0.6- ?.4
1.5
i = ;.'). ur
.L»IM>IM
o -; - [.jO. OF SJTFS
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B. Biological Characteristics;
1. Phytoplankton -
Sampling
Date
02/27/75
06/13/75
11/19/75
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Oscillatoria
Chroomonas
Cryptomonas
Synedra
Cyclotella
Other genera
Total
Fragilaria
Cyclotella
Trachelomonas
Cryptomonas
Oocystis
Other genera
Total
Raphidiopsis
Cryptomonas
Cyclotella
Chroomonas?
Lyngbya
Other genera
Total
Algal
Units
Per ml
495
180
90
90
90
990
514
206
128
103
77
128
1,156
624
381
173
139
139
276
1,732
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2. Chlorophyll a_ -
Sampling Station Chlorophyll a_
Date Number (yg/1)
02/27/75 01 7.2
02 5.1
03 8.2
04 4.6
05 4.8
06 4.8
07 6.1
08 6.3
09 5.4
10 6.4
11 6.4
06/13/75 01 1.0
02 8.0
03 1.1
04 1.1
05 1.6
06 1.1
07 1.5
08 1.4
09
10
11
11/19,20/75 01 3.4
02 6.0
03 3.6
04 2.4
05 4.1
06 2.6
07 3.3
08 4.0
09 2.1
10 1.7
11 3.1
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10
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked
a. 02/27/75 Stations 01,02
Spike (mg/1)
Ortho P
Cone, (mg/1)
Inorganic N
Cone, (mg/1)
Control
0.05 P
0.05 P + 1.0 N
1.00 N
Control
0.05 P
0.05 P + 1.0 N
1.00 N
b. 11/19/75
Control
0.05 P
0.05 P + 1.0 N
1.00 N
Control
0.05 P
0.05 P + 1.0 N
1.00 N
<0.005
<0.055
<0.055
<0.005
Stations 03,04
<0.005
<0.055
<0.055
<0.005
Stations 01-04
0.005
0.055
0.055
0.005
Stations 06-09
0.005
0.055
0.055
0.005
0.152
0.152
1.152
1.152
0.152
0.152
1.152
1.152
0.260
0.260
1.260
1.260
0.200
0.140
1.140
1.200
Maximum Yield
(mg/1-dry wt.)
0.3
5.2
24.1
0.3
0.2
1.8
31.5
0.2
0.2
7.8
9.4
0.2
0.1
6.5
18.6
0.1
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11
2. Discussion -
The control yields of the assay alga, Selenastrum capri-
cornutum*, indicate that the potential for primary productivity in
Lake Havasu was low at both sample collection times (02/27/75,
11/19/75). The addition of phosphorus alone produced an increase
in yield over that of the control at Stations 01-04 in February and
at Stations 01-09 in November, indicating phosphorus limitation.
Spikes of nitrogen alone did not stimulate growth beyond the control
yields in these assays.
The February assays for Station 07-11 are not considered re-
liable because of a significant change in the nutrient levels
between the time the samples were collected and the assays were
begun, so are not included in this report.
The inorganic nitrogen to orthophosphorus ratios (N/P) in the
lake were approximately 20/1, 17/1, and 41/1 in the spring, summer,
and fall, respectively, suggesting primary limitation by phosphorus
(a mean N/P ratio of 14/1 or greater generally reflects phosphorus
limitation).
*For further information regarding the algal assay test
procedure and selection of test organisms, see U.S. EPA
(1971).
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12
IV. NUTRIENT LOADINGS
(See Appendix D for data)
For the determination of nutrient loadings, the Arizona 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 April and May when two samples were collected. Samp-
ling was begun in December 1974, and was completed in November 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Arizona District Office of the USGS for the tributary sites nearest
the lake.
In this report, nutrient loads for sampled tributaries were
determined by using a modification of a USGS computer program for
.calculating stream loadings. Nutrient loads indicated for tributaries
are those measured minus known point source loads, if any.
Nutrient loadings for unsampled "minor tributaries and immediate
drainage" ("II" of USGS) were estimated by using the mean annual con-
centrations in Gene Wash, the Colorado River Aqueduct and Bill Williams
River at Stations B-l, C-l and E-l and mean annual II flow.
The operators of the Catfish Trailer Park and Needles wastewater
treatment plants provided a number of effluent samples and corres-
ponding flow data. Nutrient loads for Cattail Cove State Park were
calculated from provided monthly chemistry data and estimated flows.
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13
A. Waste Sources:
1. Known municipal
Name
Catfish
Trailer
Park
Needles
Pop.*
Served
200
6,000
Cattail Cove 300
State Park
Treatment*
Activated
Sludge
Trickling
Filter
Activated
Sludge
Mean Flow , Receiving
(m3/d x IP3) Water
0.049
3.200
0.113**
Colorado River
Colorado River
Lake Havasu
2. Known industrial - None
*Provided by treatment plant operator.
**Esimated at 0.3785 m3/capita/day.
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14
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
% of
Source kg P/yr total
a. Tributaries (nonpoint load) -
A-2 Colorado River 272,190 96.6
B-l Gene Wash 5 <0.1
b. Minor tributaries and immediate
drainage (nonpoint load) - 660 0.2
c. Known municipal STP's -
Catfish Trailer Park 180 0.1
Needles 7,060 2.5
Cattail Cove State Park 250 0.1
d. Septic tanks* - 25 <0.1
e. Known industrial - None
f. Direct precipitation** - 1,350 0.5
Total 281,720 100.0%
2. Outputs - A-l Colorado River 190,275
3. Net annual P accumulation - 91,445
*Estimate based on 72 lakeshore residences, 3 campgrounds, and 1 park.
**Estimated (See NES Working Paper No. 175).
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15
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
% of
Source kg N/yr total
a. Tributaries (nonpoint load) -
A-2 Colorado River 7,949,325 98.5
B-l Gene Wash 220 <0.1
b. Minor tributaries and immediate
drainage (nonpoint load) - 21,025 0.3
c. Known municipal STP's -
Catfish Trailer Park 590 <0.1
Needles 16,845 0.2
Cattail Cove State Park 1,625 <0.1
d. Septic tanks* - 1,015 <0.1
e. Known industrial - None
f. Direct precipitation** - 83.455 1.0
Total 8,074,100 100.0%
2. Outputs - A-l Colorado River 7,826,805
3. Net annual N accumulation - 247,295
*Estimate based on 72 lakeshore residences, 3 campgrounds and 1 park.
**Estimated (See NES Working Paper No. 175).
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16
D. Mean Annual Nonpoint Nutrient Export by Subdrainage Area:
Tributary
Colorado River
Gene Wash
kg P/km/yr
1
kg N/kmVyr
18
12
E. Mean Nutrient Concentrations in Ungaged Streams:
Tributary
Mean Total P
(mg/1)
Mean Total N
(mg/1)
C-l Colorado River Aqueduct
E-l Bill Williams River
0.036
0.026
0.862
1.275
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17
F. Yearly Loadings:
In the following table, the existing phosphorus loading is
compared to the relationship proposed by Vollenweider (1975).
Essentially, his "eutrophic" loading is that at which the receiving
waters would become eutrophic or remain eutrophic; his "oligotrophic"
loading is that which would result in the receiving water remaining
oligotrophic or becoming oligotrophic if morphometry permitted. A
"mesotrophic" loading would be considered one between "eutrophic"
and "oligotrophic".
Note that Vollenweider's model may not be applicable to water
bodies with very short retention times or in which light penetration
is severely restricted from high concentrations of suspended solids
in the surface waters.
Total Yearly
Phosphorus Loading
(g/m2/yr)
Estimated loading for Lake Havasu 3.64
Vollenweider's "eutrophic" loading 1.94
Vollenweider's "oligotrophic" loading 0.97
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18
V. LITERATURE REVIEWED
Earl V. Miller Engineers, Division of International Engineering,
Inc., and Metcalf & Eddy, Inc. 1976. Water Quality Management
Plan, Colorado Main Stem River Basin, Arizona. Prepared for
the Arizona Department of Health Services.
Rathbun, Ned L. 1974. Personal Communication (lake morphometry).
Arizona Game and Fish Department, Phoenix, Arizona.
U.S. Environmental Protection Agency. 1971. Algal Assay Procedure
Bottle Test. National Eutrophication Research Program, Corvallis,
Oregon.
U.S. Environmental Protection Agency. 1975. National Eutrophi-
cation Survey Methods 1973-1976. Working Paper No. 175.
National Environmental Research Center, Las Vegas, Nevada, and
Pacific Northwest Environmental Research Laboratory, Corvallis,
Oregon.
Utah State University. 1975. Colorado River Regional Assessment
Study, Parts 1-4. Prepared for National Commission on Water
Quality, Contract No. WQ5AC054. Utah Water Research Laboratory,
Logan, Utah.
Vollenweider, R. A. 1975. Input-Output Models With Special
Reference to the Phosphorus Loading Concept in Limnology.
Schweiz. Z. Hydrol. 37:53-84.
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19
VI. APPENDICES
APPENDIX A
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 B
TRIBUTARY FLOW DATA
-------
FOrf
1 1/26/76
LA*t CODfc 0403
LAKt HAVASO
TOTAL JRAINAot
Ol- LAnE(b(J
TRloUTA*T ARtAlbu KM)
0403A1
0403A2
040JB1
04037?
JAN
Kits
MAh
AHr*
MAY
NOHMALI^EO
JUN JUL
A0(i
SEH
OCT
NOV
DEC
MtAN
.8
446256.ts
17.t>
16B35.0
1*1. 5« 226. -
311.4V 33V. So 311.49 339. BO 396.4* 339. aO 269.01 184.06 130.26 135.92 260.69
178.40
0.011
0.425
TOTAL
bOM OF
263.33
0.011
1.416
351.96
O.OOo
DRAlNAfaE ArfEA
SUd-DHAlNAGt
3*6.
0.0
44
11
bO
Oh LAK.L =
AntAS =
373.78
0.011
0.203
463091.
4631U9.
396.4*
-------
Tk.l buTANY fLu* I[\,r'urti»tM ION; FOH
ll/26/7o
LAKfc. CODE 0<»03
LAKE HAVASU
MEAN MONTHLY FLO»S AND DAILY
MONTH YtAx MEAN FLO* DAY
040301
04U3ZZ
I?
1
2
3
4
5
6
7
H
-------
APPENDIX C
PHYSICAL AND CHEMICAL DATA
-------
STOKf-T KtTrflEVflL DATE ?b/ll/2b
NAIL £UT«OPi-.ICATIUiM SllKVEY
E?«-LAS VtGAS
34 lii 01.0 114 08 15.0 3
LAKE HAVASU
0*027 ARIZONA
1101*1
FfcOM
TO
Or'
DAY
75/02/27 10
10
10
10
10
1U
75/06/13 10
10
1U
10
10
75/11/1* 09
09
09
09
09
FEET
30 0000
30 0005
30 OOlb
30 0031
30 0044
30 0057
15 0000
15 OOC-5
15 00i5
la 0030
15 005/
50 0000
50 0005
50 0020
50 0035
50 0053
00010
TEMP
CfcNT
9.2
9.1
9.1
6.4
8.2
8.0
24.0
23.8
22.9
21.4
17.7
X4.6
14.6
14.6
14.6
14. f,
llt>ALES
2111202
0061 FEET OEPTH CLASS
00300
00
MG/L
11.4
11.2
11.4
11.6
10.6
10.2
6.0
8.2
8.0
6.6
4.2
9.2
9.6
9.0
9.0
9.2
00077
TMANSP
SECCMl
INCHES
72
120
48
00094
CNOUCTVY
FIELD
MICHOMHO
1101
1066
1100
1102
1133
1125
1360
1350
1308
1262
1177
605
820
827
83*
80b
00400
MM
su
8.65
6.65
8.b5
8.60
8.50
8.45
d.40
0.35
8.25
7.90
7.80
8.30
8.30
8.20
6.20
8.30
00410
T ALK
CACOJ
MG/L
136
135
13?
137
136
136
142
141
140
135
141
142
13«
141
134
135
00610
NH3-N
TOTAL
MG/L
0.020K
0.020
0.020K
0.020K
0.020K
0.020
0.040
0.040
0.040
0.060
0.150
0.020K
0.030
0.030
0.030
0.030
00
00625
TOT KJEL
N
MG/L
0.500
0.400
0.500
0.400
0.400
0.400
1.200
0.500
0.400
0.400
0.600
0.200*
0.200K
0.200*
0.200*
0.200K
00630
N02NNU3
N-fOTAL
MG/L
0.090
0.090
0.090
0.110
0.120
0.130
0.130
0.130
0.140
0.160
0.160
0.110
0.120
0.120
0.120
0.120
00b71
PMOS-DIS
MG/L P
0.004
O.OOb
0.004
0.003
0.003
0.003
0.011
0.013
0.013
0.009
0.010
0.004
0.005
0.005
0.003
0.002
DATE
Fwo«i
TO
75/02/27
75/Ob/13
75/11/19
00665 32217 00031
TIME DEPTH PHOb-TOT CHLrtPHYL INCOT LT
OK A REMNING
UAY FEET
10
10
10
10
10
10
10
10
10
10
10
09
09
09
09
09
30
30
30
30
30
30
15
15
15
15
15
50
50
50
50
50
0000
0003
0016
0031
0044
0057
0000
0005
0015
0030
0057
0000
0005
0020
0035
0053
MG/L P
0.
0.
0.
0.
0.
0.
0.
0.
0,
0.
0.
0.
0.
0.
0.
0.
.016
.015
,017
,015
,014
,016
,030
,012
,011
.012
,027
,034
,01b
.018
,014
.012
UG/L PEHCENT
7.2
1.0
3.4
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
RETRIEVAL uATE 7b/ll/2o
NATL EUTKOPnICATlUN iUHVEY
EHA-LAS VEGAS
U40302
34 17 34.0 114 05 54.0
LAKE HAl/ASU
Ot027 AKl/ONA
1101V1
HtPALES 2111202
0020 FEET DEPTH CLASS 00
DATE
FwQK
TO
75/02/27
/5/06/13
75/11/19
00010
TIME DEPTH WATtK
OK TEMP
DAY FEcf
09
09
09
09
10
10
10
10
09
09
09
09
45
45
45
45
30
30
30
30
20
20
20
20
0000
0006
0011
0016
0000
00ut>
0015
002^
0000
OOOb
0015
0026
CENT
9.4
8.7
8.7
8.6
23.1
24.5
22.7
22.1
14.8
14.8
14. 8
14.8
00300
UO
MG/L
11.0
10.2
10.2
10.2
8.0
B.2
7.8
4.0
9.0
9.6
9.0
8.8
00077
TKANSP
SECCHI
INCHES
34
48
24
00094
CNDUC1 VY
K1ELO
MICHOMHO
1128
1134
1113
1101
1383
1368
1306
1288
836
«3/
850
837
094
C1 VY
0
OMHO
1128
1134
1113
1101
1383
1368
1306
1288
836
«3/
850
837
00400
PH
SU
8.60
8.45
8.4b
8.43
8.43
8.4b
8.30
8.bO
8.00
8.£!S
8.23
8.10
00410
T ALK
CAC03
Mo/L
138
140
143
138
140
140
I3f
142
133
133
138
136
00610
NH3-N
T01AL
MG/L
0.040
0.020
0.020
0.020K
0.040
0.040
0.020
0.040
0.020K
0.020K
0.020
0.020
00625
TOT KJtL
N
MG/L
0.800
0.400
0.400
0.300
0.600
0.400
0.400
0.600
0.200K
0.200K
0.200K
0.200K
oo6:-io
N02f,N03
N-TOTrtL
MG/L
0.120
0.120
0.120
0.120
0.110
0.120
0.140
0.120
0.110
0.100
0.110
0.100
00^71
PHOS-01S
0*Tr.G
Mrt/|_ P
0.009
0.005
O.OOb
0.004
0.011
0.00*1
0.007
0.01*
0.006
0.00*
0.00»
0.010
OATE
KHOM
TO
75/02/27
75/06/1 J
75/11/19
00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL INCDT LT
OF A HEMNING
DAY FEET
09
09
09
09
10
10
10
10
09
09
09
09
45
45
45
45
30
30
30
30
20
20
20
20
0000
0006
0011
0016
0000
0005
0015
OO^e
0000
OOOb
OOlb
0026
MG/L P
0.
0,
0.
0.
0,
0.
0.
0.
0,
0.
0.
0,
.021
,01 7
,016
,015
.015
,010
.013
.017
.023
.020
.020
• 035
UG/L PEHCENT
5.1
8.0
6.0
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
OATt
MAIL
VEGAS
t)A Tc
h (
-------
bTOKET htTPIEtfAL OftTt 7*/ll/26
:
-------
RETRIEVAL oATt 76/11/^6
NATL EUTrtOPrflCATIQtM SlMvtY
EPA-LAS VEGAS
0*0306
34 i!6 2?.0 H4 1
LAn>£ HAVA5U
04015 AHIZGNA
44.0 3
110191
0037 FEET JEPTH
2iii2u2
CLASS 00
UftTE
I-HOM
ro
75/02/27
75/06/13
75/11/20
oouio
TIME DEPTH «ATtH
OF TtMP
DAY FEtT
14
14
14
14
14
13
13
13
13
13
10
10
10
10
10
55
5b
55
55
55
10
10
10
10
10
80
10
20
20
20
0000
OOOb
0016
0033
0033
0000
0005
OOlb
0030
00*3
0000
0005
0015
0027
0035
CENT
9.4
9.1
8.0
7.6
7.5
25.2
24.0
22.4
19.2
16.?
13.3
13.2
13.2
13.2
13.1
00300 00077 00094
oo TKAMSP CNDUCTVY
SECCMl HELD
MG/L INCHES MiCMOMhO
11.4
11. b
11.6
11.6
11.0
0.8
8.2
8.0
6.<»
4.2
9.6
9.*
9.2
9.2
9.4
84 1106
1111
1102
i086
1090
240 137V
1332
1281
1208
1195
72 792
791
800
811
806
00400 oo4io
PM r ALK
CAC03
SU
8.60
8.60
8.60
8.60
8.50
8.40
8.^0
8.»0
8.20
7.90
8.30
8.30
8.30
8.30
8.30
MG/L
137
137
138
138
138
136
137
13o
137
140
13B
136
134
13»
133
00610 00625 00b30 00b71
NH3-N TOT KJtL N02&.N03 PHOS-OIS
TOTAL N N-TOTAL 0«TMO
M6/L
0.020K
0.0?OK
0.030
0.020
0.020K
0.0*>0
0.040
0.040
0.050
0.130
0.020K
0.020
0.020K
0.020K
0.020
MG/L
0.600
0.500
0.500
0.600
0.500
0.800
0.400
0.400
0.400
0.300
0.200K
0.300
0.200K
0.200
0.200
MG/L
0.140
0.150
0.140
0.150
0.160
0.140
0.140
0.140
O.POO
0.180
0.130
0.140
0.140
0.130
0.130
M(,/L P
0.000
0.004
0.012
0.013
0.012
0.009
0.007
o.oo»
0.007
0.00'*
0.002K
0.00"
O.OOtK
O.OOcK
O.OOcK
UATE
(-KOM
TO
75/02/27
75/06/13
75/11/20
00665 32217 00031
TIME DEPTH PriOS-TOT CHLUPHYL INCDT LT
OF A REMNlNG
DAY FEtl
14
14
14
14
14
13
13
13
13
13
10
10
10
10
10
55
55
55
55
55
10
10
10
10
10
20
20
20
20
20
0000
0005
0016
002J
0033
0000
0005
001S
0030
0043
0000
OOOb
0015
002/
0035
MG/L H
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.016
.018
.013
.023
.013
.011
.009
.00*
.010
.014
.018
.015
.016
.013
.013
UG/L PEHCE.NT
4.8
1.6
4.1
K VALUE KNOWN TO BE LESS
-------
STUKtT
NATL
EP-A-LAS
JATE 76/11/26
0*0306
34 27 29.0 11* 20 32.0 3
LAI^E HAVAbU
0*015 AK1/6NA
OAtE
lu
75/U2/27
75/00/13
75/11/19
UATE
t^OM
10
TIME DEPTH
OF
DAY FEET
15 30 0000
15 JO 0005
15 30 0016
15 30 0023
lt> 30 0033
13 30 0000
13 30 0005
13 30 0015
13 30 0022
11 30 0000
11 30 OOOb
11 30 0024
11 30 0031
TIME DEPTH
OF
DAY FEtT
00010
CENT
9.2
8.0
8.0
7.6
7.3
25.9
25.1
22. J
20.6
13.4
13.5
13.4
13.4
00665
PriOS-TOT
MG/L P
003uO
00
MG/L
11.
11.
11.
11.
11.
8.
8.
8.
7.
9.
9.
9.
9.
32217
OOu t 7 00094
TwwiN'bP CNOUCTVY
ctCCHI FIELD
INCHES MICRUMHO
4 72
8
6
2
0
* IbU
0
4
4
2 54
6
2
6
OOOJl
1192
1211
1428
1166
107b
1380
1351
1289
1233
H20
791
816
799
lltPA
0037
00400
f-H
SU
6.60
8.65
8.6U
6.60
8.50
8.40
H.3b
8.40
8.20
8.30
8.25
8.20
8.25
LtS 211120*:
FEET DEHTri CLASS 00
00410 00610 0062b 00630 00671
T ALK. NH3-N TOT IvJtL N02&N03 PnOS-DIS
CAC03 TOTAL N N-TOTAL OPTnO
Mfa/L
137
13'
138
13*
139
13b
136
136
I3f
133
131
131
133
Mfa/L
0.020K
0.020K
0.020K
0.020K
0.020K
0.070
0.050
0.050
0.080
0.020
0.020
0.020
0.020
MG./L
O.oOO
O.iOO
O.bOO
O.bOO
0.300
O.hOO
0.400
0.400
o.*oo
O.^OOK
0.200K
o.<:oo^
0.200K
MG/L
0.140
0.140
0.160
0.16U
0.170
0.140
0.1*0
0.1*0
o.uo
0.140
0.140
0.1*0
0.140
«r,/t P
0.00*
0.003
0.002
0.002
0.003
0.006
0.001
O.OIO
0.004
0.004
O.OOJ
0.00*
0.004
CHLtfPHYL INCOT LT
A
UG/L
REMNING
PEKCtNT
K VALUE
KNOWN TO BE
LESS
THAN INDICATED
75/'j«V27
75/Ot»/13
75/11/19
Ib 30 OOUO
15 30 0005
15 30 0016
15 30 0023
15 JO 0033
13 30 0000
13 30 0005
13 30 001S
13 30 00*2
11 30 0000
11 30 0005
11 30 0024
11 30 0031
U.013
0.013
0.017
0.014
0.012
0.010
0.011
0.009
0.020
0.014
0.013
0.013
0.043
4.
1.
2.
8
1
6
-------
SK>-
OMHO
840
795
790
790
790
1143
1120
1012
1015
796
»02
797
797
00400
PH
SU
8.50
B.bb
B.50
8.55
8.55
8.40
8.45
8.35
8.20
8.30
8.10
8.20
8.25
00410
T ALK
CAC03
MG/L
136
136
136
13/
137
137
135
136
137
128
130
130
133
00610
NH3-N
TOTAL
Mb/L
O.OPO
0.0201V
0.020K
0.020K
0.020K
0.080
0.040
0.040
0.060
0.020
0.020
0.020
0.020
00623
TOf K.JtL
N
Mb/L
0. '00
0.500
0.400
O.bOO
0.600
1.000
0.300
0.300
0.300
0.200K
0.100
0.200
0.200
00630
N02&N03
N-TOTAL
MG/L
0.170
0.150
0.140
0.150
0.150
0.150
0.140
0.150
0.210
0.140
0.140
0.130
0.130
00671
PiOS-JIS
0>«THO
MG/L P
0.004
0.00*
0.012
0.009
0.005
0.023
O.Olc
0.011
0.013
0.007
O.OU
0.008
O.OOJ
DATE
KWOM
Tu
OF
UAY FEtT
/5/U2/27 14 55 0000
14 55 0005
14 55 0015
14 55 0025
14 55 0035
/5/f)b/13 13 10 0000
13 10 0005
13 10 0015
13 10 0030
75/11/19 13 00 0000
13 00 0005
13 00 0027
13 00 0031
0665
S-TOT
/L P
0.015
0.017
0.021
0.015
0.014
0.028
0.011
0.014
0.014
0.016
0.015
O.Olh
0.016
32217
CHLKPHYL
A
U(j/L
6.1
l.b
3.3
00031
INCOT LT
^PMNlwG
PEHCti^T
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
KtT«ItVAL
NATL
k>A-L*5 VEGAS
040306
34 28 14.0 114 22 30.0 3
t_AK,t HAVASU
040lb AHiZONA
0071
MU/L
0.016
O.Olh
0.014
0.003
0.019K
0.016K
0.02«K
0.021*
0.002K
U.002K
0.002K
0.002^
00665 32217
OAIE TIME OEHTH HuOb-TOT CHLHHHYL
FRO^ OF A
TU DAY FEET Mu/L P OG/L
7S/02/27 13 00 0000 u.016 e>.3
13 00 OOOS 0.027
13 00 OOlb U.Olb
13 00 0024 0.013
75/06/13 11 00 0000 0.014 1.4
11 00 0005 0.010
11 00 0015 0.013
11 oo 0034 o.oir
75/11/20 10 00 0000 0.017 4.0
10 00 0005 0.017
10 00 0015 0.014
10 00 0024 0.017
00031
INCOT LT
PEHCENT
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
NAT,
ktlMlCVAL DATE ?o/ll/26
rfOPhl
VEGAS
U40309
34 31 36.0 114 22 59.0 3
HAVASO
Artl/ONA
110191
lite ALC.S
0027 FEET L)Ef
LtATfe
I--U-'
ru
75/02/21
'5/06/13
75/11/19
DATE
f-rtOM
TO
75/D2/21
75/06/13
'5/11/19
TI-E
01-
UAf
11 15
11 15
11 15
11 15
10 20
13 20
13 20
13 20
13 20
TlMt
OK
DAY
11 15
11 15
11 15
11 15
10 20
13 2U
13 20
13 20
13 20
OtHTH
(-"tET
0000
0005
0015
0023
0000
0000
0005
0015
0024
OtPTH
FEET
0000
0005
0015
0023
0000
0000
0005
0015
0024
00010
MATE*
TLMP
CtNT
10.1
10.3
10.1
10.1
20.7
12.2
12.2
12.1
11.9
00t>65
PHOS-TOT
MG/L P
0.016
0.017
0.015
0.017
0.019
0.019
0.019
0.019
O.OU
00300 ooo/r
00 TrtANiP
StCCrtI
MG/L INCHcS
10.6 50
10.6
11.0
10. a
7.8
9.6 66
9.d
6.2
10.0
32217 00031
CHLKPHYL INCDT LT
A REMNING
U&/L PENCE.NT
5.4
2.1
0009*
CNOUCTVY
f IELU
M1CKOMHO
796
riOO
800
796
1033
757
763
729
765
00400
PH
SO
8.50
8.50
8.50
8.50
8.25
B.25
8.25
8.25
8.25
00410
T ALK
CACO3
MG/L
136
136
136
137
135
134
134
137
14*
2111202
'Tn CLASS
00610
NM3-N
TOIAL
Mb/L
0.030
0.020
0.020
0.020
0.080
0.020
0.020
0.020
0.020K
00
00623
TOT KJtL
N
MG/L
0.600
0.400
0.500
0.500
0.600
0.200
0.200
0.200K
0.600
006TO
N02lsN03
N-IOTAL
MG/L
O.?10
0.200
0.200
0.200
0.180
0.150
0.160
0.160
O.<»20
00o71
PHOS-OIb
OWTrtU
MG/L ^
0.007
0.005
0.013
0.015
0.018
0.010
0.00%
O.OOJ
0.002
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STuntr KETHlEVAL UATt 76/11/ct
NA1X EUTSOPhlCATlON
06-LAS VttiAS
DATE
trt(j«
TO
75/02/27
75/06/13
V5/11/20
TIME DEPTH
Of-
DAY FEtT
10 20 0000
10 20 00l»:>
10 20 0015
10 20 0023
10 00 0000
09 30 0000
09 30 0005
09 30 0015
09 30 0020
OOulO
• ATtH
TEMP
CENT
10.2
10.3
10.3
10.3
16.6
12.2
12.2
12.1
12.1
00300
00
10.b
11.2
10.b
9.0
9.6
9.4
9.0
00077 000*4
TKANSP C.NDUCTVY
StCCHl FIELD
INCHES MlCHOMhO
60
40
bUO
bOO
800
800
976
765
795
759
779
040310
34 37 40.0 114 26 25.0 3
LAKfc. MAVASU
0401b
110191
11EPALES
0027 FEtT
UtPTri
2111202
CLASS 00
00400
PH
su
8.55
B.55
8.55
fl.55
8.30
8.25
b.25
8.25
8.25
00410
T ALK.
CAC03
M15/L
13/
135
135
131
134
125
123
124
126
00610
NPI3-N
TOTAL
Mfa/L
0.030
0.020
0.020
0.020K
0.100
0.020K
0.020K
0.020K
0.020K
00623
TOT KJtL
N
MO/L
0.600
0.500
0.400
O.f 00
0.700
0.200*
0.200*
0.200
0.200K
00630
M)2^N03
N-TUTAL
MG/L
O.?10
0.220
0.210
0.200
0.220
0.170
0.170
0.170
0.170
00t>71
PHOS-DIS
On'TnO
MG/L P
0.015
o.oi r
O.Olb
0.009
0.01?
0.002K
0.002K
0.002K
0.002K
OATt
TO
OF
IJAY FEtT
75/02/27 10 20 0000
10 20 0005
10 20 0015
lu 20 0023
75/06/13 10 00 0000
/5/11/20 09 30 0000
09 30 OOOS
09 30 0011
09 30 0020
0665
ib-TOT
i/L P
0.020
0.023
0.029
0.041
0.022
0.016
0.019
O.Olb
0.019
32217
CHLKPHYL
A
UG/L
6.4
1.7
00031
INCDT LT
rtEMMNG
PEHCEiNT
K VALUE KNOHN TO BE LESS
THAN INDICATED
-------
•>iATi_ tUfKOf
tt-A-LAS VfcGAS
0*0311
34 42 65.0 114 28 b8«0 3
LAKE HAVASU
U4015
I.J
ooolo
Tl.-iE DEPTH dATtrt
Of TtMP
OJT FEET CENT
75/02/27 09 40 0000 9.7
09 fO OOOb 9.7
75/U6/13 09 4b 0000 17.9
09 10 0000 12.b
09 10 000*1 12.5
00300
00
MG/L
lu.o
11.2
7.2
10.2
9.8
000/7
00094
StCOl
INCHES
72
96
FIELD
MChOMMO
780
780
962
771
787
llEPALtS 2111202
0009 FEET UtPTh CLASS
00400
PM
SO
8.40
8.40
8.20
8.25
8.25
00410
r ALK
CAC03
MG/L
138
137
134
127
127
00610
NH3-N
TOTAL
Mb/L
0.060
0. 0201V
0.090
0.020
0.020
00
00623
TOT KJtL
N
rtG/L
0.700
0.600
0.600
0.200
0.200K
00630
N02kN03
N-10TAL
MG/L
0.220
0.220
0.220
0.170
0.170
00t>71
PHOS-OI5
OWTi-iO
MG/L P
0.021
0.020
0.030K
0.002
0.002K
iM TE
1-rtOM
TO
75/02/27
75/06/13
75/1 1/20
TIME DEPTH
OF
DAY FEtT
09 40 0000
09 40 0005
09 45 0000
09 10 0000
09 10 OOOS
00665
PHOs-TOT
MG/L P
U.021
0.024
0.021
0.022
0.016
32217
CHLKPhYL
A
UG/L
6.4
3.1
00031
INCUT LT
KF.MNING
PFHCt..\T
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
APPENDIX D
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STOrtET RETRIEVAL DATE 76/11/30
NATL EJTROPHIC6TIOM SURVEY
C.PA- LAS VEGAS
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
74/12/07
75/02/15
75/03/15
75/04/12
75/04/25
7b/0b/10
75/05/24
75/06/14
75/07/05
75/U8/23
7b/09/13
75/10/18
75/11/15
16
16
15
15
16
16
16
16
15
16
16
15
15
25
00
20
35
00
30
00
00
4b
15
00
00
45
04Q3A1
34 17 40.0 114 06 20.0 4
COLORADO RIVEK
04 7.5 faENt BASH
0/MAVASU LAKE 110)1*1
BNK HELD PAKKEH UArt POttEHHOUSE
11EPALES 211120*
0000 FEET OEHTri CLASS 00
0630
6.N03
GTAL
G/L
0.160
0.125
0.116
0.180
0.175
0.170
0.135
0.130
0.165
0.070
0.080
0.085
0.110
00625
TOT RJEL
N
MG/L
0.900
0.600
1.000
1.000
0.700
0.250
0.500
0.250
2.100
o.aoo
0.400
0.900
0.800
00610
NH3-N
TOTAL
MG/L
0.0<»b
0.032
0.032
0.042
0.0*b
0.020
0.03b
0.040
0.060
0.040
0.015
0.020
0.025
00671
PHOS-OIS
OftTHO
MG/L P
0.005
O.OOUK
O.OOtiK
0.005K
0.005K
0.005K
0.005
O.Olb
0.005
0.002
0.005K
0.005K
00665
PMOS-TOT
MG/L H
Oe020
0.010
0.020
0.010K
0.010K
0.090
0.010
0.015
0.020
0.040
0.030
0.020
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STOrftT rtdTRIEVAL UME 76/11/30
NATL tUTROPrllCATION SURVEY
EPA- LAS VEC.A5
OATE TIME DEPTH N02t,N03
FHOM OF
TO DAY FEET
74/12/07
75/02/15
75/03/15
75/04/11
75/04/26
75/05/10
75/05/24
75/06/14
75/07/05
75/08/23
75/OV13
75/10/18
75/11/15
11
10
11
11
11
11
11
11
11
11
11
11
11
00
40
00
00
00
10
05
00
00
00
00
30
00
04Q3A2
34 42 55.0 114 29 00.0 4
COLOKAOO RIVtR
04 /.b TOPUCK
T/HAVASU LAKt
RED KOCK BKOG AT
11EPALES
0000 FEET DEHTH
110191
2111204
CLASS 00
0630
t.N03
CTAL
IG/L
0.184
0.1^2
0.204
0.200
0.210
0.220
0.190
0.200
0.165
0.125
0.24Q
0.170
0.155
00625
TOT KJEL
N
MG/L
0.900
0.200
0.900
0.900
0.900
0.400
0.200
0.250
1.950
0.350
0.300
0.600
0.500
00610
NH3-N
TOTAL
MG/L
0.020
0.016
0.032
0.035
0.045
0.025
0.020
0.025
0.035
0.020
0.010
0.015
0.015
00671
PHOS-DIb
OSTHO
MG/L P
0.005
0.006
0.008K
0.005
0.005K
0.005
0.005K
0.005
0.010
0.020
0.002
0.005K
0.005K
00665
PHOS-TOT
MG/L P
0.010
0.015
0.020
0.010
0.010K
0.010
0.090
0.010
0.190
0.030
0.030
0.030
0.010
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORE! RETrtltWftL U&TE 7&/U/30
NATL EUTSOPnICATION SUrJi/E.Y
EPA- LAS VEGAS
0403B1
34 18 1300 114 09 25.0 4
GENE wASh
04 7.D GENE cJASH
T/hAVASU LAKE 110191
S£C HO BrtDli 3.3 MI NK OF PAKKEH
UEPflLtS 211120*
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
74/12/07
75/02/15
75/03/15
75/04/12
75/04/^5
75/05/10
75/05/24
75/06/14
75/07/05
75/08/23
75/09/13
75/10/18
75/11/15
00630 0062b
TIME DEPTH N02e.N03 TOT RJEL
OF N-ToTAL N
DAY KEET
15
14
14
15
lo
14
15
15
15
15
15
14
15
25
45
30
00
00
30
00
00
00
15
15
45
00
MG/L tfG/L
0
0
0
0
0
0
0
0
u
0
u
0
0
.160
.064
.056
.030
.030
.030
.025
.035
.020
.020
.045
.030
.060
0
0
i
i
0
u
0
0
0
0
0
0
.900
.100*
.300
.000
.050
.400
.900
.350
.050
.600
.700
.300
U0610 00671 00665
NH3-N PHOS-UIS PHOS-TOT
TOTAL ORTHO
MG/L
0
0
0
0
0
U
0
0
0
0
0
0
0
.Olb
.OOtt
.024
.075
.Olb
.010
.030
.015
.012
.015
.002
.Olb
.010
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
*"
005K
Olb
008K
005K
005K
005K
005K
005K
005
005K
005K
OObK
MG/L P
0.010K
0.016
0.020
0.010
0.010K
0.050K
0.090
0.010
0.010K
0.010
0.010K
O.OlOK
K VALUE KNOWN TO BE LESS
THAN INDICATED -
-------
STOKET RETRIEVAL DATE /6/11/JO
NATL EUTROPhlCATION SURVEY
EPA- LAS VEGAS
DATE TIME DEPTH N02S.N03
FROM Of
TO DAY FEET
74/12/07
75/02/15
75/03/15
75/04/12
75/04/25
75/05/10
75/05/24
75/06/14
75/07/05
75/08/23
75/09/13
75/10/18
75/11/15
15
15
15
15
15
15
15
15
15
15
15
15
15
45
10
00
30
15
06
30
30
15
30
30
30
00
0403C1
34 18 58.0 114 09 23.0 4
COLORADO HIV AOUEUUCT
04 7.5 GEMt *ASM
0/HAVASU LAKE 110191
BNK AT WMlTiET INTAKE 1.5 M NW PARKER DM
HEPALtS 2111204
0000 FEET DtHTH CLASS 00
0630
S.NU3
OfAL
G/L
0.176
0.120
0.123
0.1«b
0.180
0.160
0.135
0.125
0.130
0.015
O.C10
0.090
0.110
00625
TOT KJEL
N
MG/L
0.400
0.100K
1.800
0.550
0.600
U.100
1.050
0.250
1.100
0.400
0.800
1.200
0.650
00610
NH3-N
TOTAL
MG/L
0.010
0.008K
0.032
0.075
0.025
0.015
0.060
0.020
0.025
0.015
0.055
0.025
O.Olb
00671
PHOS-DIS
ORTMO
MG/L P
0.005K
0.008K
O.OObK
0.005K
O.OObK
0.005
O.OObK
0.005K
0.005
0.005K
0.002
0.005K
0.005K
00665
PHOS-TOT
MG/L P
0.010K
0.010K
0.040
0.020
0.010*.
o.oyu
0.100
o.oio
O.OlOlv
0.010
0.005
0.020
0.010K
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STOHET RETRIEVAL DATL 76/11/30
NATL EUTROPHICATION SJHVEY
EPA- LAS VEbAS
DATE TIME DEPTH N02J.N03
KNOM OF
TO DAY FEET
74/12/07 14 20
75/02/15 14 00
75/U3/15 13 45
75/04/12 14 15
75/04/25 14 30
0403E1
34 15 25.0 114 00 30.0 4
BILL WILLIAMS HltfEU
04 YUMA CO GEN MAP
T/HAVASU LAKt 110m
SEC HO BKDG 29 Ml ME Of KAhKErt
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
f,N03
OTAL
G/L
0.790
0.528
0.504
0.220
0.135
00625
TOT KJLL
N
M6/L
0.600
0.300
2.000
0.450
0.850
00610
NH3-N
TOTAL
M6/L
0.010
0.016
0.028
0.035
0.075
00671
PnOS-OIa
OWTrlO
MG/L H
0.025
0.016
0.008
0.005K
U.01U
00665
PHOS-TOT
MG/L P
0.030
0.020
O.ObO
0.020
0.010
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
ft.
EPA LAS V£SftS
ilti-'ALtS 21<
0000 FE£T OE>TH CLAS:
D&TE
FROM
TO
7b/0&/03
75/06/16
75/07/09
75/07/30
75/08/04
75/08/25
75/09/03
TIME DEPTH
OF
DAY FEET
09 30
08 00
08 00
08 00
10 00
11 30
08 00
00630
N02&N03
N-TOTAL
Mb/L
26.000
40.000
30.000
26.000
28.000
20.000
4b.OOO
00625
ToT KJE.L
N
MG/L
2.100
0.500
1.200
2.100
2. bOO
1.800
3.200
C0610
NH3-N
TOTAL
MG/L
0.060
0.081
0.02bK
0.07b
0.120
0.02b
0.064
00671
PHOS-01S
OrtTHO
MG/L P
8.900
13.500
lO.bOO
3.400
9.000
7.000
lO.bOO
00665
PMOS-TOT
MG/L f-
9.530
13.500
10.500
9.000
9.300
7,bbO
lO.bOO
bOObl
FLOW
HATh
INST ^,Gu
O.Olb
0.015
0.010
O.Olb
O.Olb
0.010
0.010
bOOb'3
CONDUIT
FLOfc-MGO
MONTHLY
O.Olb
O.Olb
0.010
0.015
0.015
0.010
0.010
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STOrtET RETt
-------
STO^ET titTRltVAL DATE 7b/ll/3G
NATL EUTHOPrtlCATICf
EPA- LAS VEGAS
AS040321 P000300
3* 2b 00,0 11* 2? 00.0 »
CATTAIL C0»t STATE P
fin 15 wrilKKLt MTS.
D/LAKt HAVASO 1101-H
LAKE rIAVASU
HtPALES 21*120*
0000 FEET DEKTH CLASS 00
DATE
TO
75/05/03
CP(T)-
75/05/03
75/U6/04
CP( D-
75/06/04
75/07/05
CP(T)-
75/07/05
75/08/08
CP(T>-
75/08/08
75/09/03
CP-
70/01/11
76/02/08
Cp (T) -
76/02/08
76/03/17
00630
TIME DEPTH N02«,N03
OF N-TOTAL
DAY FEET MG/L
12
16
10
16
11
16
12
16
11
17
16
14
05
14
10
14
15
00
30
00
00
00
00
00
30
JO
00
00
00
00
00
30
30
JO
u
0
0
0
0
0
0
12
0
0
.100
.150
.025
.600
.100
.100
.150
.600
.075
.050
00625
TOT KjEL
N
MG/L
54
37
48
4
48
38
52
2
11
62
.000
.500
.000
.700
.000
.000
.000
.400
.000
.000
U0610
NH3-N F
TOTAL
MG/L
45
31
32
0
41
25
J9
0
40
.000
.000
.UOO
.100
.000
.000
.000
.065
.500
00671
'HOS-OIS
ORTHO
MG/L P
J
2
2
1
3
3
5
5
5
4
.150
.400
.800
.300
.100
.800
.000
.600
.300
.000
00665 50051 30053
PMOS-TOT FLOW CONDUIT
rtATt t-LOw-MGO
MG/L P INST MliU MONTHLY
6.VOO
5.600
3.800
1.400
3.700
3.800
7.800
7.700
11.000
8.600
-------
APPENDIX E
PARAMETRIC RANKINGS OF LAKES
SAMPLED BY NES IN 1975
STATE OF ARIZONA
Mean or median values for six of the key parameters evaluated
in establishing the trophic conditions of Arizona lakes sampled
are presented to allow direct comparison of the ranking, by parameter,
of each lake relative to the others. Median total phosphorus, median
Inorganic nitrogen and median dissolved orthophosphorus levels are
expressed in mg/1. Chlorophyll a^ values are expressed in yg/1.
To maintain consistent rank order with the preceding parameters,
the mean Secchi disc depth, in Inches, is subtracted from 500.
Similarly, minimum dissolved oxygen values are subtracted from 15
to create table entries.
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
0401 BIG LAKE
0402 FOOLS HOLLOW
0403 LAKE HAVASU
0404 LUNA LAKE
0405 LYMAN LAKE
0406 LAKE MOHAVE
0407 LAKE PLEASANT
0408 LAKE POWELL
0409 RAINBOW LAKE
0410 ROOSEVELT LAKE
0411 SAN CARLOS RESERVOIR
3201 LAKE HEAD
MEDIAN
TOTAL P
0.033
0.059
0*015
0.182
0.099
0.017
0.027
0.009
0.046
0.020
0.056
0.020
MEDIAN
INORG N
0.090
0.090
0.170
0.050
0.060
0.24.0
0.040
0.400
0.045
0.040
0.060
0.505
500-
MEAN SEC
386.000
466.600
420.231
396.250
484.667
369.667
449.154
239.000
440.750
429.917
474.500
453.600
MEAN
CHLORA
2.900
10.683
3.948
3.400
2.633
4.404
9.808
1.333
16.367
4.073
14.750
1.150
15-
MIN DO
9.000
14.800
10.800
12.200
9.000
8.600
14.900
12.200
12.000
14.000
14.600
8.000
MEOI
DISS ORTi
0.007
0.014
0.005
0.131
0.056
0.010
0.004
0.010
0.009
0.008
0.009
0.007
-------
PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
0401 BIG LAKE
0402 FOOLS HOLLOW
0403 LAKE HAVASU
0404 LUNA LAKE
0405 LYMAN LAKE
0406 LAKE MOHAVE
0407 LAKE PLEASANT
0408 LAKE POWELL
0409 RAINBOW LAKE
0410 ROOSEVELT LAKE
0411 SAN CARLOS RESERVOIR
3201 LAKE MEAD
MEDIAN MEDIAN
TOTAL P INORG N
45 <
18 <
91 1
0 1
9 1
82 <
55 1
100 I
36 l
68 <
27 I
68 <
: s>
: 2)
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------- |