U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
FOOLS HOLLOW LAKE
NAVAJO COUNTY
ARIZONA
EPA REGION IX
WORKING PAPER No, 727
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
FOOLS HOLLOW LAKE
NAVAJO COUNTY
ARIZONA
EPA REGION IX
WORKING PAPER No, 727
WITH THE COOPERATION OF THE
ARIZONA STATE DEPARTMENT OF HEALTH
AND THE
ARIZONA NATIONAL GUARD
AUGUST, 1977
-------
REPORT ON FOOLS HOLLOW LAKE
NAVAJO COUNTY, ARIZONA
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. 727
OFFICE OF RESEARCH AND DEVELOPMENT
U.S. ENVIRONMENTAL PROTECTION AGENCY
August 1977
-------
CONTENTS
Page
Foreword ii
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 17
VI. Appendices 18
-------
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, concen-
trations, 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 nonpoint source pollution abatement in lake water-
sheds.
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
In this report, the first stage of evaluation of lake and
watershed 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)J, 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 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 Guardsnen, are also
gratefully acknowledged for their assistance to the Survey.
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IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF ARIZONA
LAKE NAME
Big Lake
Fools Hollow Lake
Lake Havasu
Luna Lake
Lyman Lake
Lake Mohave
Lake Pleasant
Lake Powell
Rainbow Lake
Theodore 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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3415'
^v
\
I
(
i
\
\
Map Location
Show Low
•34 10
\
FOOLS HOLLOW LAKE
0 Tributary Sampling Site
X Lake Sampling Site
I Sewage Treatment Facility
Showl
Low
Lake.
5 Km.
3Mi.
Scale
Lake
\
Scott
Reservoir f;
C/Bftf
-------
REPORT ON FOOLS HOLLOW LAKE, ARIZONA
STORE! NO. 0402
I. CONCLUSIONS
A. Trophic Condition:*
On the basis of field observations and Survey data, Fools
Hollow Lake is considered eutrophic, i.e., nutrient rich and
highly productive. Whether such nutrient enrichment is to be
considered beneficial or deleterious is determined by its
actual or potential impact upon designated beneficial water
uses of each lake.
Chlorophyll £ values ranged from 8.7 pg/1 to 11.9 yg/1
with a mean of 10.7 ug/1. Potential for primary production
as measured by algal assay control yields was moderately low
in the spring and high in the fall. Hypolimnetic dissolved
oxygen levels were depleted and hydrogen sulfide production
was detected at Station 01 during June arid October. Of the
11 Arizona lakes sampled in 1975, 2 had higher median total
phosphorus levels (0.059 mg/1), 3 had higher median inorganic
nitrogen values (0.090 mg/1) and 2 had higher median ortho-
phosphorus levels (0.014 mg/1) than Fools Hollow Lake.
Survey limnologists reported no problem algal blooms or
aquatic macrophyte growths during their visits to the lake.
*See Appendix E.
-------
However, low Secchi disc visibility suggests primary productivity
is light-limited in Fools Hollow Lake throughout at least the
spring and summer sampling periods. The Arizona Department of
Health Services (1976) classes Fools Hollow Lake as having un-
acceptable water quality due to its high phosphorus and turbidity
levels, and oxygen content which is periodically unacceptably
low for maintenance of a cold water fishery. The Arizona Game
and Fish Department (J. Novy, Personal Communication) reports
nuisance weed growth develops in all shallow areas of the lake
during summer months.
B. Rate-Limiting Nutrient:
The algal assay results indicate that Fools Hollow Lake was
limited by available phosphorus during the spring sampling (03/04/75)
and by available nitrogen during the fall (10/06/75). The lake
data suggest nitrogen limitation at all three sampling times.
C. Nutrient Controllability:
1. Point sources -
During the sampling year, point sources were calculated
to contribute 30.3% of the total phosphorus load to Fools Hollow
Lake. The Fairway Park plant contributed 25.7% of the total
load and the Lakeside Laundry Mat contributed 4.6%.
2. Nonpoint sources -
Nonpoint sources, including precipitation, contributed
69.7% of the total phosphorus load during the sampling year.
-------
Show Low Creek contributed 44.2% and ungaged drainage areas
were estimated to have contributed 18.6% of the total. The
State of Arizona reports that the Little Colorado River Basin
is, in general, phosphorus-rich as a result of natural runoff.
However, septic tanks in Show Low, Lakeside and Pinetop, as
well as agricultural runoff from surrounding crop land, are
probably additional sources of nonpoint nutrient enrichment
to Fools Hollow Lake (Arizona Department of Health Services,
1976). A planned sewage treatment facility for the Pinetop-
Lakeside area which would pump effluent out of the drainage
basin may result in reduced nutrient input to the lake (W. H.
Shafer, personal communication).
The outlet of Fools Hollow Lake flows intermittently;
thus no information is available on nutrient outflow from
the lake during the 1975 sampling year. Additional sampling
is needed to determine the true nutrient budget for Fools
Hollow Lake before recommendations on controllability can be
proposed.
-------
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 maximum volume at spillway are indicated. Tribu-
tary 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 estimated
by dividing the lake volume by mean flow of the outlet (0.004 cms),
Precipitation values are estimated by methods as outlined in
National Eutrophication Survey (NES) Working Paper No. 175. A
table of metric/English conversions is included as Appendix A.
A. Lake Morphometry:
2
1. Surface area: 0.57 km .
2. Mean depth: 7.0 meters.
3. Maximum depth: 18.6 meters.
4. Volume: 3.968 x 10^ m3.
5. Mean hydraulic retention time: 11,481 days (31.4 yr).
-------
B. Tributary and Outlet:
(See Appendix B for flow data)
1. Tributaries -
Drainage- Mean Flow
Name area (km ) (in-Vsec_)_
A-2 Show Low Creek 239.6 0.06
Minor tributaries and
immediate drainage - 42.1 0.02
Total 281.7 0.08
2. Outlet - A-l Show Low Creek 282.3 <0.01
C. Precipitation:
1. Year of sampling: 30.8 cm.
2. Mean annual: 63.2 cm.
-------
LAKE MATER QUALITY SUMMARY
Fools Hollow Lake was sampled three times during the open-water
season of 1975 by means of a pontoon-equipped Huey helicopter. Each
time, samples for physical and chemical parameters were collected
from two stations on the lake and from a number of depths at each
station (see map, page v). During each visit, depth-integrated samples
were collected from each station for chlorophyll ^analysis and phyto-
plankton identification and enumeration. During the first and last
visits, 18.9-liter depth-integrated samples were composited for algal
assays. Maximum depths sampled were 13.7 meters at Station 01 and
4.3 meters at Station 02. For a more detailed explanation 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 chloro-
phyll £ determinations are included in III-B. Results of the limiting
nutrient study are presented in III-C.
-------
FOOLS HOLLO-
COPE 040?
CHEMICAL CHARACTERISTICS
( -'/ 4/7^ ]
- ^0* --. ~
PABAvPTPw ;i» -4T4E •"• >T •'•
TE-iKt^ATO-E (OEG "PN-T;
0.-!.=; •' r,Ft,TH 4 3.3- 4.5 3.-.
MAX OE°TH»» ? ?.3- 4.1 ">.?
OlSSOi vfc'o 0»Yr,iCN (wtt'u)
0.-1.5 ••' I'El-Ti- 4 l r, .?- lo.ci iO."
"Ax OEPTH»» ? -<,2- 10.0 :>.l
rONOUCTIVITY 2)4.- ?]6. 215.
PH (STANDARD UNIT'-)
O.-l.S "i -iFPTn 4 n.b- H.7 1.7
MAX f)FPTH*<* ? 7.9- 8.7 H.3
TOTAL ALKALINITY FPT-i " ->.- 99. -57.
"AX r>EPTH»« ? P7.- 96. 9?.
TOTAL D ("R/L»
0.-1.5 M •TEPT'i 4 n.0'3-0.il59 O.n?9
*-.AX OFPTH»o £ 0.021-0.083 O.OSf
DISSOLVE.!) 0-vTnO H (Mr,/L)
O.-l.S " HEPTH 4 0.006-0.015 0.006
«AA OFPTnoa 2 0.0 '7-0. 020 0 . 0 1 .<
NOJ>*N03 ("G/L>
0.-1.5 - :'FP-T-i 4 0.0-0-0.070 .;.'1fc(>
"AX i)PPTH-:i«i ? O.rr'O-O.OTi 0.075
AMMONIA C'G/L)
0.-1.5 M rEr^T* ^ f'.O ^u-0.040 n.OTb
MAX OFPTH»« 2 0.030-0. OHO (i.nsb
XJELOAHL N (Mfi/L)
C.-l.S «• DEPTH 4 0.7-10-1 . 100 U.-^O
«AX OEPTH»» ? 0.7'io-O.flOO 0.7^0
i ( 6/19/75 )
"AY
'E^T"1 s*«« = V
: A •>!'--
( «ET - -N) N-- i <• 78.-
3.<*- 10.7 2 77.-
0.0- 1.5 •» 0.061-0
3.4- 10.7 ? 0.0*>0-0
1.0- l.S 4 0.014-0
3.4- 1 0.7 2 0.0 1 0-0
0.0- !.-. " O.(;^>0-0
1.4- 10.7 ? O.OPO-0
0.0- l.S 4 0.050-0
3.4- 10.7 ? 0.060-0
O.U- l.b 4 f). 500-0
~<.4- 10.7 ? 0.400-0
G£
16.1
14.1
6.4
6.4
132.
124.
7.9
8.0
HO.
79.
.12*
.101
.029
.029
.120
.030
.200
.190
.800
.600
MEDIAN
15.9
1?.2
6.2
3.3
131.
118.
7.8
7.6
78.
7H.
0.066
0.080
0.017
0.019
0.025
0.025
0.050
0.125
0.600
0.500
i (10
MAX
DEPTH «:««.»
rfflNGE
(METERS) N« P.ANGF
0.0-
4.0-
0.0-
4.0-
0.0-
*.o-
0.0-
4.0-
0.0-
4.0-
0.0-
4.0-
0.0-
4.0-
0.0-
4.0-
0.0-
4.0-
0.0-
4.0-
1.5
11.0
1.5
11.0
1.5
11.0
1.5
11.0
1.5
11.0
1.5
11.0
1.5
11 .0
1.5
11.0
1.5
11.0
1.5
11. 0
4
2
4
2
4
2
4
?
4
2
4
2
4
2
4
2
4
1
4
2
18.8-
15.1-
7.6-
2.0-
149.-
149.-
8.8-
7.9-
80.-
84.-
0.0.39-0
0.044-0
0.009-0
0.006-0
0.020-0
0.020-0
0.020-0
0.020-0
0.200-0
0.400-1
18.8
18.4
8.0
7.2
153.
153.
8.9
8.9
84.
97.
.064
.300
.017
.083
.020
.020
.040
.020
.600
.700
/ 6/75 1
= ?
MEDIAN
18.8
16.7
7.«
4.6
153.
151.
8.8
8.4
81.
91.
0.049
0.172
0.011
0.044
0.020
0.020
0.020
0.020
0.500
1.050
I
MAX
DEPTH
RANGE
(METEPS)
0.0-
4.3-
0.0-
4.3-
0.0-
4.3-
0.0-
4.3-
0.0-
4.3-
0.0-
4.3-
0.0-
4.3-
0.0-
4.3-
0.0-
4.3-
0.0-
4.3-
l.b
13.7
l.b
13.7
l.b
13.7
l.b
13.7
l.b
13.7
1.5
13.7
1.5
13.?
l.b
13.7
l.b
4.3
l.b
13.7
0.5- 0.6 0.6
1 1.5- 1.5 1.5
= NO. Of Si
tHfH r.ftMHL£D AT E'.Ch ^ I TF_
> ofr SITES SAMH.LO Ou T"I<^ OATE
-------
B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
03/04/75
06/19/75
10/06/75
Dominant
Genera
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Chroomonas?
Cryptomonas
Cyclotella
Melosira
Flagellate
Other genera
Total
Melosira
Coelastrum
Oocystis
Cryptomonas
Scenedesmus
Other genera
Total
Melosira
Apjianizomenon
Trachelomonas
Cryptomonas
Ankistrodesmus
Other genera
Algal
Units
Per ml
2,587
1,053
511
421
391
1,142
6,105
1,681
193
193
154
135
696
3,052
7,673
310
194
116
116
466
Total
8,875
-------
2. Chlorophyll a -
Sampling
Date
03/04/75
06/19/75
10/06/75
Station
Number
01
02
01
02
01
02
Chlorophyll a
(yg/1)
11.2
11.9
9.5
8.7
11.2
11.6
-------
10
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N Maximum Yield
Spike (mg/1) Cone, (mg/1) Conci (mg/1) (mg/1-dry wt.)
a. 03/04/75
Control 0.010 0.112 0.3
0.05 P 0.060 0.112 6.1
0.05 P + 1.0 N 0.060 1.112 18.6
1.00 N 0.010 1.112 0.3
b. 10/06/75
Control 0.035 0.260 13.0
0.05 P 0.085 0.260 14.0
0.05 P + 1.0 N 0.085 1.260 44.8
1.00 N 0.035 1.260 20.6
-------
11
2. Discussion -
The control yields of the assay alga, Selenastrum capricornutuni*,
indicate that the potential for primary productivity of Fools Hollow
Lake was moderately low during the spring sampling (03/04/75) and
high during the fall sampling (10/06/75). In the May assay, a sig-
nificant increase in yield occurred when phosphorus was added alone
and in combination with nitrogen, indicating phosphorus limitation.
The addition of only nitrogen did not result in a yield greater than
that of the control. In the October assay, the addition of nitrogen
alone and in combination with phosphorus, produced a significant
increase in yield over that of the control, indicating nitrogen limi-
tation at this time. The addition of phosphorus alone resulted in
a yield which was not significantly greater than that of the control.
The mean inorganic nitrogen to orthophosphorus ratios (N/P) in
the lake data are approximately 11/1, 8/1, and 5/1 in the spring,
summer, and fall, respectively, suggesting primary limitation by
nitrogen (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).
-------
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 whenever possible
from each of the tributary sites indicated on the map (page v), ex-
cept for the high runoff months of April and May when two samples
were collected. Sampling was begun in December 1974, and was com-
pleted 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
concentrations in Fools Hollow Creek at Station C-l and mean annual
II flow.
The operator of Fairway Park Water provided monthly effluent
samples and corresponding flow data. Nutrient loads for the Lakeside
Laundry Mat wastewater treatment plant were estimated at 1.134 kg P
and 3.401 kg N/capita/year.
-------
13
A. Waste Sources:
1. Known municipal -
Name
Pop.*
Served
Fairway Park 200
Water
Lakeside Laundry 11
Mat
Treatment*
Activated
Sludge
Stabilization
Pond
Mean Flow
(m.3/d x 1p3)
0.011
0.004**
Receiving
Water
Unnamed Creek
Unnamed Creek
2. Known industrial - None
*Provided by treatment plant operator.
**Estimated at 0.3735 m3/capita/day.
-------
14
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
% of
Source kY tota
a. Tributaries (nonpoint load) -
A-2 Show Low Creek 95 44.2
b. Minor tributaries and immediate
drainage (nonpoint load) - 40 18.6
c. Known municipal STP's -
Lakeside Laundry Mat 10 4.6
Fairway Park Water 55 25.7
d. Septic tanks* - 5 2.3
e. Known industrial - None
f. Direct precipitation** - 10 4.6
Total 215 100. V
2. Outputs - A-l Show Low Creek —
*Estimate based on 2 campgrounds.
**Estimated (See NES Working Paper No. 175).
-------
15
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
% of
Source kg N/yr total
a. Tributaries (nonpoint load) -
A-2 Show Low Creek 2,155 56.1
b. Minor tributaries and immediate
drainage (nonpoint load) - 795 20.7
c. Known municipal STP's -
Lakeside Laundry Mat 35 0.9
Fairway Park Water 105 2.7
d. Septic tanks* - 140 3.6
e. Known industrial - None
f. Direct precipitation** - 615 16.0
Total 3,845 100.0%
2. Outputs - A-l Show Low Creek
*Estimate based on 2 campgrounds.
**Estimated (See NES Working Paper No. 175).
-------
16
D. Mean Annual Nonpoint Nutrient Export by Subdrainage Area:
Trjibjuta_ry_ kg P/km /yr
Show Low Creek <1
Mean Nutrient Concentrations in Ungaged Streams:
Tributary
A-3 Show Low Creek
B-l Unnamed Creek
C-l Unnamed Creek
Yearly Loading:
Total Yearly
Phosphorus Loading
(g/m?/yr)
Estimated loading for Fools Hollow Lake
kg N/km /yr
9
Mean Total P
(mg/1)
0.064
0.230
0.067
Mean Total
(mg/1)
1.219
1.265
1.257
0.38
-------
17
V. LITERATURE REVIEWED
Arizona Department of Health Services. 1976. Water Quality
Management Basin Plan, Little Colorado River Basin, Arizona.
Phoenix, Arizona.
Novy, J. R. 1977. Personal Communication (problem macrophytes).
Arizona Game and Fish Department, Phoenix, Arizona.
Rathbun, Ned L. 1974. Personal Communication (lake morphometry).
Arizona Game and Fish Department, Phoenix, Arizona.
Shafer, W. H. 1977. Personal Communication (lake nutrient loadings)
Arizona Department of Health Services, 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 Eutrophica-
tion Survey Methods 1973-1976. Working Paper No. 175. National
Environmental Research Center, Las Vegas, Nevada, and Pacific
Northwest Environmental Research Laboratory, Corvallis, Oregon.
-------
18
VI. APPENDICES
APPENDIX A
CONVERSION FACTORS
-------
ulsion FACTORS
vr, x 2.47'l - seres
Kilometers x O.f^Ui - miles
Motors x 3.281 ~ feet
Cubic mo torn x C.I 07 x 10 - acrc/fent
Square kilometers x 0.3861 - square miles
Cubic, iiietcrs/scc x 35.315 - cubic fcct/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
-------
LAKt CODE 0402
FOOLS HOLLOa LAKE
TOTAL DRAINAGE AREA !.AKE(SQ
SUB-DRAINAGE
TRIBUTARY AREA JAM
0402A1
0402A2
0402Z?
282.3
239.6
42.7
FEb
0,003 0.006
0,057 0.1*2
0.01* 0.057
262.3
MAR
0,085
TOTAL DRAINAGE AREA OF LAKE =
SUM OF SUb-UKAlNAGE AREAS
0
0
AH*
.01*
.028
MAY
Oo003
OcOl*
0.006
JUN
0.0
0.01*
0.006
0.
0.
0.
JUL
0
028
01*
AUG
0.0
0,058
0.014
0
0
0
SEP
.0
.042
.014
OCT
0.0
0.0*2
0.014
MOV
OaO
0.028
Oo014
SUMMARY
.A
>S
KE =
=
282.3
2B2.3
TOTAL FLOW
TOTAL FLO*
IN =
OUT =
0.
05
DEC
MEAN
0.0 0.004
0.0*2 ©,065
0.014 0.023
MEAN MONTHLY FLOWS AND DAILY FLO»S(CMb)
TRIBUTARY MONTM YEAR MEAN FLO* DAY
0402A1
0402A2
0*02ZZ
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
2
3
4
5
6
7
8
9
10
11
74
75
75
75
75
75
75
75
75
75
75
75
7*
75
75
75
75
75
75
75
75
7b
75
75
74
75
75
75
75
75
75
75
75
75
75
75
0.0
0.0
0.0
0.0
0.008
0.0
0.003
0.0
0.0
0.0
0.0
0.0
0.051
0.057
0.142
0.425
0.283
0.014
0.023
0.051
0.028
0.051
0.042
0.008
0.006
0.006
0.006
0.142
0.065
0.003
0.003
0.003
0.003
0.006
0.008
0.006
7
5
1
fl
12
11
a
6
23
17
13
16
7
5
1
8
1?
u
8
6
23
17
12
16
FLOs* OAY
0.0
0.0
0.0
0.0
0.020
0.0
0.003
0.0
0.0
0.0
0.0
0.0
0.051
0.057
0.057
0.42b
0.425
0.01*
O.Olf
0.0*2
0.02B
0.057
0.045
O.OOb
26
26
b
26
26
FLO* DAY
0.0
0.0
FLOW
0.425
0.227
0.008
-------
APPENDIX C
PHYSICAL AND CHEMICAL DATA
-------
STORET RETRIEVAL DATE 76/11/26
NATL EJTROPHlCATIuiN i. VLY
EPA-LAS VEGAS
J4 16 37.0 110 0* 32.0 3
FUOLS HOLLUw
0401? AKl^ONA
UttTt
ru
75/03/04
75/U6/1*
7b/10/o6
DATE
FKO*
TO
7b/03/04
75/06/1*
fb/10/06
TIME
0^
DAY
10
10
10
10
10
10
10
10
10
16
16
16
16
16
20
20
20
20
20
40
40
40
4U
00
00
00
00
00
TIME
OF
DAY
10
10
10
10
10
10
10
10
10
16
16
16
16
16
20
20
20
20
20
40
40
40
40
00
00
00
00
00
UE^Th
FEET
0000
oous
OOlb
002b
OOJb
oouo
OOub
OOlb
0036
0000
000t>
OOlb
0030
0045
DEPTH
FEET
0000
000 =
OOlb
0025
003b
OOUO
0005
0015
0036
0000
OOOb
0015
0030
00*5
00010
CtNT
3.8
3.3
2.6
2.3
2.3
16.1
16.1
15.7
10.4
18.8
18.8
lb.6
16.4
15.1
00665
PHOS-TOT
Mb/L P
0.05*
0.023
U.014
0.022
U.083
0.128
0.071
U.090
0.101
0.040
0.058
0.054
0.167
0.300
00300
00
MG/L
10.
10.
10.
*«
d.
4.
6.
3.
0.
f .
6.
7.
0.
2.
32217
OU077 000*4
ThANSP CNDUCTVY
StCCnl FIELD
INCntS MICHOMHU
8 30
2
0
6
2
8 2i
2
U
2
8 60
0
0
5
0
00031
2i<:
216
210
220
214
130
131
131
112
153
153
151
138
153
UEPALtS 2111202
00-»b FEtT UEHTH CLASS 00
00400 00410 00610 00625
Ph T ALK NH3-N TOT KotL
CAC03 TOTAL N
SO
8. fO
8.65
8.50
8.30
7.*5
6 . /:>
7.80
7.35
7.15
b . *o
8.85
8.S5
7.60
7.*0
Mb/L M(j/L MO/L
*t> 0
9* U
100 0
9* 0
8/ 0
80 U
78 0
Ib u
77 0
80 0
81 0
7* 0
00 0
*7
.040
.030
.020
.050
.080
.200
.oso
.200
.190
.020K
.020*
.020*
.620
1.000
o. too
0. '00
0.700
O.«00
0.800
0.500
0.600
0.600
0.20U
0.600
0.4QO
1.100
1. 100
CHLKPHYL INCUT LT
A
UG/L
11.
*.
11.
SEMNING
PEKCEiMT
2
5
2
006.10 OObH
N026.MOJ "-"HOS-DI:
N-TOTf.L OHTMO
0.050
0.0*0
0.070
O.OHO
O.OdO
0.120
0.0 JO
0.040
O.Ojil
O.U^OK
0.020K
0.020K
0 . 01 -.
O.OU7
o.oo«.
0.00-,
o.oo7
O.Ot?
0 . 0 i '.
o.o: •
O.Uc r
0 . 01-1
O.Oi
O.Oi
0.0*-.
O.Ot;
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL OATt fh/11/26
NATU EUTROPHICATION SL- tY
EPA-LAS VEGAS
040202
34 16 12.0 110 04 22.0 3
FOOLS HOLLO*
04017
1105*1
11EPALES 21112U2
0013 FEET DEPTH CLASS 00
OATE
KrtOM
TO
75/03/04
75/06/19
75/10/06
JATE
FP.OM
TO
75/03/04
75/06/19
75/10/06
TIME DEPTH
Of-
DAY
14
14
14
10
10
10
16
16
16
FEET
55 0000
55 0005
55 0011
55 0000
55 0005
55 0013
15 0000
15 0005
15 0014
TIME DEPTH
OF
DAY
14
14
14
10
10
10
16
16
16
FEET
55 0000
55 0005
55 0011
55 0000
55 0005
55 0013
15 0000
15 0005
15 001*
00010
MATER
TEMP
CENT
4.2
4.1
4.1
15.8
15.4
14.1
18.8
is. a
18.4
00665
PHOS-TOT
MG/L P
0.025
0.034
U.021
0.061
U.061
0.060
0.064
""*" 0.039
0.044
00300
00
Mb/L
10.
10.
10.
6.
6.
6.
7.
7.
7.
32217
4
8
0
2
4
4
8
6
2
CHLKPrlYL
A
UG/L
11.
8.
11.
9
7
6
00077 00094
TWAI^SP CNDUCTVY
SECCHI FIELD
INCHES MICROMhO
33 222
216
216
23 132
128
124
152
14V
149
00031
INCOT LT
HEMMING
PERCENT
00400
PM
00410 00610 0062b
T ALK NH3-N TOT NjEL
CAC03 TOTAL
SU
8.
8.
8.
7.
7.
8.
8.
8.
8.
Mtt/L MG/L
70
70
70
90
90
00
80
80
90
96 0
96 0
96 0
78 0
70 0
79 0
80 0
84 0
84 0
.040
.030
.030
.050
.050
.060
.040
.020K
.020K
N
MG/L
1.100
0.700
0.700
0.600
0.600
0.400
O.oOO
0.400
0.400
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
APPENDIX D
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL DATE 7S/11/30
NATL EUTROPHICATION So -:Y
EPA- (.AS VEGAS
DATE
FROM Of-
TO DAY
TIME DEPTH
FEET
0402A1
34 16 28.0 110 04 30.0 4
SHOta LUX CHEEK
04 7.b SHUN LOU N
0/FOOLS HOLLO* LArtt
BNK bOO FT N END OF RD NAT TO f-LS HOL CM
11EPALES 2111204
0000 FEET OEPTH CLASS 00
00630
N-TGTAL
MG/L
00625
TOT K.JLL
N
MG/L
00610
NH3-N
TOTAL
MG/L
00671
PHOS-DIS
ORTHO
MG/L P
00665
PHOS-TOT
MG/L P
75/04/12 17 00
0.025
1.600
O.lOb
0.015
0.060
-------
STORET RETRIEVAL DATE. 76/11/30
NATL EUTROPHICATION Su 'tY
EPA- LAS VEGAS
OftTE TIME DEPTH
FROM of-
TO DAY FEET
74/12/07
75/01/05
75/02/01
75/03/08
75/04/12
75/04/^6
75/05/11
75/05/26
75/06/08
75/07/06
75/08/23
75/09/17
75/10/12
75/11/16
09
16
13
13
16
12
17
13
13
16
11
17
10
11
05
00
05
10
00
35
30
15
45
30
15
00
30
30
0402A2
34 16 12.0 110 02 48.0 4
ShO« LOW CREEK
04 7.5 SHU« LOW
T/FOOLS HOLLO* LAKE 110591
BNK 1.7 Ml NNH Of SHOW LOM
UEPALES 2111204
0000 FEET DEPTH CLASS 00
10630
!*,N03
'OTAL
IG/L
0.005
0.008
0.008
0.016
0.030
0.010
0.005
0.025
0.005
0.020
0.010
0.110
0.005
0.005
00625
TOT KJC.L
N
Mfa/L
0.700
0.900
1.500
1.050
1.100
1.430
0.950
0.575
0.550
0.700
0.400
6.300
2.400
1.000
00610
NH3-N
TOTAL
MG/L
0.015
0.032
0.104
0.024
0.030
0.025
0.025
0.020
0.025
0.020
0.025
4.300
0.040
0.025
00671
PHOS-DIS
ORTHO
MG/L P
0.015
0.010
0.024
0.033
0.020
0.025
0.035
0.010
0.010
0.030
0.020
2.400
0.060
0.030
00665
PHOS-TOT
MG/L P
0.030
0.020
0.050
0.100
0.060
0.05U
0.050
0.025
0.020
0.050
0.040
0.100
0.080
-------
STORE! RETRIEVAL OATE 7S/11/30
NATL EUTROPHICATIOM Su. .tY
EPA- LAS VtGAS
OATE TIME DEPTH N02S.N03
FROM OF
TO DAY FEET
74/12/07
75/02/01
75/03/08
75/04/12
75/04/26
75/05/11
75/05/26
75/06/08
75/07/06
75/08/23
75/09/17
75/10/12
75/11/16
09
12
12
16
13
17
13
16
10
17
10
11
35
40
45
00
20
00
30
30
45
30
20
45
0402A3
34 15 15.0 110 01 40.0 4
SHOW LOW CHEEK
0
0.035
0.035
0.025
0.020
0.045
0.015
0.015
00671
PHOS-DIS>
ORTHO
MG/L P
0.015
0.032
0.016
0.020
0.020
0.025
0.020
0.030
0.030
0.030
0.040
0.010
0.010
00665
PHOS-TOT
MG/L P
0.060
o.oao
o.ovo
0.062
0.100
0.070
0.060
0.040
0.070
0.090
0.030
0.025
-------
STOHET RETRIEVAL DATE'7o/l1/30
NATL EUTHOPHICATION SJHVEY
EPA- LAS VEGAS
00630 00625 00610 00671
DATE TIME DEPTH N02NN03 TOT KJEL NM3-N PHOS-DIS
FROM OF N-TGTAL N TOTAL OHThO
TO DAY FEET MG/L MG/L MG/L MG/L P
0402B1
3* 16 12.0 110 04 34.0 4
UNNAMED STHEAM
Ot 7.5 SHUv. LOW N
T/FOOLS HOLLO* LAKE 110591
OKT RO 8HDG 1.1 M N OF OLD LlNOtN rtD JCT
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0066S
PHOS-TOT
MG/L P
75/04/12 16 45
0.013
1.250
0.020
0.040
0.230
-------
STORET RETRIEVAL DATS
NATL EUTROPrilCATION So
EPA- LAS VEGAS
. EY
0402C1
34 15 »7.0 110 04 15.0 4
CHEEK IN FOOLS HOLLOW
04 7.5 SHOW LOW N
T/FOOLS HOLLOW LAKE 1105V1
UNMPKVO «0 BrtDfa 1 M NW OLD LINDtN HO JCT
11EPALES 2111204
0000 FEET OEHTH CLASS 00
DATE TIME DEPTH N026.N03
(-HOM OF
TO DAY FtET
7b/02/01 13 20
7b/OJ/U8 13 20
75/04/li; 16 40
0630
t. NO 3
OTAL
G/L
0.128
0.008
0.035
00625
TOT KjLL
N
MG/L
1.700
0.900
1.000
00610
NH3-N
TOTAL
MG/L
0.032
0.016
0.020
00671
PHOS-OIb
OHTnG
MG/L P
0.02o
O.OOW
0.025
00665
PHOS-TOT
Mfa/L P
0.120
0.020
0.060
-------
STOR6T RETRIEVAL DATE 7*>/ll/30
NATL EUTKOPHICATION Sv,- .tY
EPA- LAS VEGAS
00630
DATE TIME DEPTH N02<*N03
FRO* OF N-TOTAL
TO DAY FEET Mo/L
75/06/11 13 00
0402AA P00402XA
34 09 00.0 104 SB 00.0 4
LAKESIDE LAUNUhY MAT
0» ID MCNARt
T/FOOLb HOLLOK LA^t
UNNAMtD C^
-------
STOHtT RETRIEVAL OATt 76/11/30
NATL EUTROPHICATION Si. :EY
EPA- LAS VEGAS
DATE TIME OEPU
F»OM OF
TO DAY FEET
75/02/24
75/03/31
75/04/26
75/05/28 16 00
75/06/30 15 30
75/J7/29 16 00
75/08/28 11 30
75/09/30 15 00
75/10/28 10 30
75/11/28 11 30
76/01/28 15 00
76/03/01 1* 00
0402YA AS0402YA P000200
34 15 00.0 110 02 00.0 4
FAIRwAY PAKK *AT£K
04 15 SMO« LO*
T/FOOLS HOLLOW LAKt 110591
UNNAMED CRtEK
11EPALLS 2141204
0000 FEET OEHTH CLASS 00
00630
I2&.N03
TOTAL
MG/L
15.200
7.900
3.300
0.65Q
0.025
0.075
0.050
0.300
O.b25
16.000
26.900
26.000
00625
TOT KJEL
N
MG/L
2.175
1.500
2.000
3.300
33.000
37.000
45.000
42.000
40.000
3.500
1.800
3.200
00610
NH3-N
TOTAL
Mli/L
0.190
O.OBOK
0.050K
0.050K
21.000
24.000
31.300
21.000
25.000
0.059
0.265
0.380
00671
PHOS-UIS
OMTMO
MG/L P
5.2BO
6.100
5.800
6.400
a. 600
lfa.000
5.200
10.SOO
5.100
11.000
11.500
9. BOO
00665
PHOS-TOT
MG/L P
5.2BO
6.600
5.900
7.600
12.070
46.000
15.000
13.000
7.700
11.500
12.500
9.900
50051
FLO*
KATt
INST MGO
0.004
0.002
0.003
0.003
0.003
0.003
O.OOo
0.002
0.002
O.U01
0.004
0.002
50053
CONDUIT
KLOw-MGD
MONTHLY
0.004
0.002
0.002
0.003
0.003
0.003
0.003
0.003
0.002
0.001
0.005
0.002
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
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 ^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
Q<»02 FOOLS HOLLOW
0403 LAKE HAVASU
0404 LUNA LAKE
0405 LYMAN LAKE
0406 LAKE MOMAVE
0407 LAKE PLEASANT
0408 LAKE POWELL
0409 RAINBOW LAKE
0410 ROOSEVELT LAKE
0411 SAN CARLOS RESERVOIR
3201 LAKE HEAD
MEDIAN
TOTAL P
0.032
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
0.240
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,
OISS 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
0403 LAKE POWELL
0409 RAINBOW LAKE
0410 ROOSEVELT LAKE
0411 SAN CARLOS RESERVOIR
3201 LAKE MEAD
MEDIAN
TOTAL P
45 (
18 <
91 <
0 (
9 (
82 1
55 <
100 1
36 1
68 <
27 1
68 1
5)
2)
10)
0)
1)
: 9)
: 6)
i ID
[ 4)
I 7)
: 3>
[ 7)
MEDIAN
INORG N
41 (
41 (
27 <
73 <
64 (
18 1
95 <
9 <
82 (
95 1
55 I
0 1
4)
4)
3)
8)
; 7)
I 2)
! 10)
! 1)
[ 9)
: 10)
[ 6)
I 0)
500-
MEAN SEC
82 (
18 (
64 (
73 (
0 (
91 1
36 <
100 I
45 1
55 i
9 1
27 1
9)
2)
7)
8)
; 0)
; ip)
: 4)
[ ID
[ 5)
[ 6)
I 1)
I 3)
MEAN
CHLORA
73 (
18 (
55 (
64 (
82 (
36 (
27 <
91 1
0 <
45 1
9 1
100 1
8)
2)
6)
7)
; 9)
: 4)
: 3)
[ 10)
I 0)
! 5)
I 1)
; ID
15-
MIN DO
77 (
9 (
64 (
41 (
77 <
91 1
0 (
41 1
55 (
27 1
18 1
100 1
8)
1)
7)
: 4)
: 8)
: 10)
: o)
[ 4)
I 6)
! 3)
: 2)
: ID
MEDIAN
UISS OkTHO
73
18
91
0
9
32
100
32
45
64
55
82
< 8>
( 2)
( 10)
( 0)
( 1>
( 3)
( ID
( 3)
( 5)
( 7)
( 6)
( 9)
------- |