U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LUNA LAKE
APACHE COUNTY
ARIZONA
EPA REGION IX
WORKING PAPER No, 729
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
LUNA LAKE
APACHE COUNTY
ARIZONA
EPA REGION IX
WORKING PAPER No, 729
WITH THE COOPERATION OF THE
ARIZONA STATE DEPARTMENT OF HEALTH
AND THE
ARIZONA NATIONAL GUARD
AUGUST, 1977
-------
REPORT ON LUNA LAKE
APACHE 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
Con/all is Environmental Research Laboratory
Corvallis, Oregon
Working Paper No. 729
OFFICE OF RESEARCH AND DEVELOPMENT
U.S. ENVIRONMENTAL PROTECTION AGENCY
August 1977
-------
i
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 3
III. Lake Water Quality Summary 5
IV. Nutrient Loadings 11
V. Literature Reviewed 16
VI. Appendices 17
-------
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)], 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.
-------
iii
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.
-------
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
Havajo
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
-------
LUNA LAKE
<8> Tributary Sampling Site
X Lake Sampling Site
^ Sewage Treatment Facility
> Drainage Area Boundary
i 2 3 1 Km-
Scale
2 Mi.
33'52'—
Map Location
109'12
33'48'—
-------
REPORT ON LUNA LAKE, ARIZONA
STORE! NO. 0404
I. CONCLUSIONS
A. Trophic Condition:*
Based on Survey data and field observations, Luna Lake
is considered eutrophic, i.e., nutrient rich and highly pro-
ductive. 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 in the lake ranged from 1.7 yg/1
to 4.2 yg/1 with a mean of 3.4 yg/1. Potential for primary
production as measured by algal assay control yields was high
throughout the sampling year. Of the 11 Arizona lakes sampled
in 1975, none had higher median total phosphorus values
(0.182 mg/1), 7 had higher median inorganic nitrogen levels
(0.050 mg/1) and none had higher median orthophosphorus values
(0.131 mg/1) than Luna Lake.
Survey limnologists reported floating mats of algae during
April sampling and algal blooms on the June and September samp-
ling dates.
*See Appendix E.
-------
B. Rate-Limiting Nutrient:
The algal assay results indicate that Luna Lake was limited
by available nitrogen during both sample collection times (04/30/75,
10/06/75). The lake data further suggest primary limitation by
nitrogen in Luna Lake throughout the sampling year.
C. Nutrient Controllability:
1. Point sources -
During the sampling year, point sources were calculated
to contribute 18.4% of the total phosphorus load to Luna Lake.
The Alpine Conservation Center contributed this entire load.
2
The present phosphorus loading of 1.90 g P/m /yr to Luna
Lake is over three times that proposed by Vollenweider (1975)
as "eutrophic" for a lake of such volume and retention time.
While elimination of point source loading to the lake would
substantially reduce the overall load, nutrient input would
still exceed Vollenweider's eutrophic level. Evaluation of
surrounding land use practices is needed to determine "nonpoint"
nutrient sources before further recommendations on nutrient
controllability can be made.
2. Nonpoint sources -
Nonpoint sources, including precipitation, contributed
81.6% of the total phosphorus load to Luna Lake during the
sampling year. The San Francisco River contributed 64.9%
and ungaged drainage areas were estimated to have contributed
15.8% of the total.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
Lake and drainage basin characteristics are itemized below.
Lake morphometry data were provided by N.L. Rathbun (1974). 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 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 in included as Appendix A.
A. Lake Morphometry:
2
1. Surface area: 0.30 km.
2. Mean depth: 2.5 meters.
3. Maximum depth: 6.3 meters.
4. Volume: 0.742 x 106 m3.
5. Mean hydraulic retention time: 107 days.
-------
B. Tributary and Outlet:
(See Appendix B for flow data)
1. Tributaries -
Drainage^ Mean Flow
Name area (km ) (m3/sec)
A-2 San Francisco River 75.4 0.10
Minor tributaries and
immediate draingage - 17.8 0.01
Total 93.2 0.11
2. Outlet - A-l San Francisco River 93.5 0.08
C. Precipitation:
1. Year of sampling: 32.0 cm.
2. Mean annual: 28.8 cm.
-------
III. LAKE WATER QUALITY SUMMARY
Luna 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 one or more depths at each station
(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
for algal assays. Maximum depths sampled were 4.6 meters at Station
01 and the surface 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 a^ determinations are included in III-B. Results of the limiting
nutrient study are presented in III-C.
-------
STORE! COOE fi404
( 4/30'75 )
A. PHYSICAL AND CHEMICAL CHAHACThRIb
( 6/16/75 )
( 10/ 6/75 )
O.-l.S « OEPTH
•"AX DFPTHO*
OISSOl.VEO 0»YGEW
O.-l.S W OEPTH
vax OEPTH**
CONDUCTIVITY iu«
O.-l.S « HEPTH
MAX DEPTH**
PH (STA^iOAP.0 UNI
O.-l.S "^ OEPTH
MAX DEPTH**
TOTAL ALKALINITY
n.-i.1^ •* DE^TH
MAX DEPTH**
TOTAL P (^G/L)
O.-l.S M OEPTH
MAX DEPTH**
DISSOLVED ORTHO
O.-l.B M HE.PTH
MAX OFPTH**
n.-i.s M OEPTH
I»AX DEPTH**
AMMONIA («G/L)
0.-1.5 M HEPTH
MAX OEPTH**
KJEL06HL N (MG/L
O.-l.S M OEPTH
MAX DEPTH**
3
2
3
2
H0<=)
3
2
rsi
3
2
("f-'/L)
3
2
3
2
P (M<5/L>
3
?
3
?
3
2
)
3
2
".3-
7.ft-
7.n-
19?.-
192.-
3.4-
8.4-
P<( .-
84.-
0.164-0
0.164-0
0.116-0
0.11^-0
0.0? 0-0
0.0?0-0
0.0?0-0
0.020-0
O.SOO-0
o.soo-o
10.1 1 r' . •)
9.9 5.-
=(.0 7. tj
8.0 7.^
231. ?^1 .
230. ?li.
8.6 c."»
H.6 «.b
97. ««>.
97. 91.
.la^ o.im
.197 0.100
.133 0.1^1
.130 U.)?3
.020 O.OPU
,u2o o.n'u
.030 C .flPO
.030 O.n?5
.700 O.f-00
.700 0.6no
Mfilf
OEPT-i
n.o-
o.o-
n.O-
n.o-
n.n-
n.o-
n.o-
n.O-
0.0-
0.0-
0.0-
0.0-
n.o-
n.o-
n.o-
0.0-
0.0-
o.O-
0.0-
1.5
4.6
1 .^
4.6
1.5
4.6
1 .^
4.6
1.?
4.6
1.5
4.6
1.5
4.6
1.-5
4.6
l.s
4.6
1.5
4.6
M*
^
3
3
?
3
^
.3
2
3
?
3
r"
3
2
3
2
3
2
S*»«
14.1- 15.0
14.1- 14.7
«.U- H.2
7.4- S.2
219.- 226.
2?0.- 225.
9.3- 9.5
9.3- 9.5
98.- 103.
98.- 103.
0.154-0.171
0.151-0.160
0.102-0.128
0. 108-0. 12B
0.020-0.030
0.020-0.020
0.020-0.080
0.020-0.020
0.700-0.800
o. 5oo-o. aoo
MEDIAN
15.0
4.0
7.8
225.
223.
9.3
9.4
100.
101.
0.160
0.155
0.108
0.118
0.020
0.020
0.0
-------
B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
04/30/75
06/18/75
10/06/75
Dominant
Genera
1. Cryptomonas
2. Chroomonas?
3. Cyclotella
4. Synedra
5. Ankistrodesmus
Other genera
Total
1. Oscillatoria
2. Anabaena
3. Fragilaria
4. Aphanizomenon
5. Cryptomonas
Other genera
Total
1.
2.
3.
Cryptomonas
Oscillatoria
Nitzschia
Other genera
Total
Algal
Units
Per ml
2,
1,
990
627
308
132
88
44
5,189
420
262
210
105
105
1,102
34
34
34
102
-------
8
2. Chlorophyll a -
Sampling Station Chlorophyll
Date Number (yg/1)
04/30/75 01 4.2
02
06/18/75 01 4.0
02 1.7
10/06/75 01 3.1
02 4.0
-------
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked
a.
04/30/75
Spike (mg/1)
Control
0.05 P
0.05 P + 1.0 N
1.00 N
b. 10/06/75
Ortho P
Cone, (mg/1)
0.110
0.160
0.160
0.110
Spike (mg/1)
Control
0.05 P
0.05 P + 1.0 N
1.00 N
Ortho P
Cone, (mg/1)
0.280
0.330
0.330
0.280
Inorganic N
Cone, (mq/1)
0.044
0.044
1.044
1.044
Inorganic N
Cone, (mg/1)
0.140
0.140
1.140
1.140
Maximum Yield
(mg/1-dry wt.)
6.2
6.9
36.3
33.5
Maximum Yield
(mg/1-dry wt.)
13.3
13.7
47.9
48.6
-------
10
2. Discussion -
The control yields of the assay alga, Selenastrum capri-
cornutum*, indicate that the potential for primary productivity
in Luna Lake was high at both sample collection times (04/30/75,
10/06/75). In both samples, the addition of nitrogen alone and
in combination with phosphorus produced a significant increase
in growth over that of the control, indicating nitrogen limitation.
Spikes of only phosphorus did not stimulate growth significantly
beyond control yields.
The mean inorganic nitrogen to orthophosphorus ratios (N/P)
in the lake data were less than one on all three sampling occasions
further 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).
-------
11
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. Sampling 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 pro-
vided 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 tribu-
taries are those measured minus known point source loads, if any.
Nutrient loadings for unsampled "minor tributaries and imme-
diate drainage" ("ZZ" of USGS) were estimated by using the mean
2
annual nutrient loads, in kg/km /year in San Francisco River, at
2
Station A-2 and multiplying the means by the ZZ area in km .
Nutrient loads for the Alpine Conservation Center wastewater
treatment plant were calculated from provided monthly chemistry
data and estimated flows.
-------
12
A. Waste Sources:
1. Known municipal
Name
Alpine
Conservation
Center
Pop.*
Served
112
Treatment*
Activated
Sludge
Mean Flow
(m3/d x IP3)
0.042**
Receiving
Water
Unnamed Creek/
San Francisco River
2. Known industrial - None
*Provided by treatment plant operator.
**Estimated at 0.3785 m3/capita/day.
-------
13
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
% of
Source kg P/yr total
a. Tributaries (nonpoint load) -
A-2 San Francisco River 370 64.9
b. Minor tributaries and immediate
drainage (nonpoint load) - 90 15.8
c. Known municipal STP's -
Alpine Conservation Center 105 18.4
d. Septic tanks - None Known
e. Known industrial - None
f. Direct precipitation* - 5 0.9
Total 570 100.0%
2. Outputs - A-l San Francisco River 540
3. Net annual P accumulation - 30
*Estimated (See NES Working Paper No. 175).
-------
14
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
% of
Source kg N/yr total
a. Tributaries (nonpoint load) -
A-2 San Francisco River 3,165 69.9
b. Minor tributaries and immediate
drainage (nonpoint load) - 750 16.6
c. Known municipal STP's -
Alpine Conservation Center 285 6.3
d. Septic tanks - None Known
e. Known industrial - None
f. Direct precipitation* - 325 7.2
Total 4,525 100.0%
2. Outputs - A-l San Francisco River 2,320
3. Net annual N accumulation - 2,205
*Estimated (See NES Working Paper No. 175).
-------
15
D. Mean Annual Nonpoint Nutrient Export by Subdrainage Area:
2 2
Tributary kg P/km /yr kg N/km /yr
San Francisco River 5 42
E. 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 "oligotrophic1
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 Luna Lake 1.90
Vollenweider's "eutrophic" loading 0.58
V
Vollenweider's "oligotrophic" loading 0.29
-------
16
V. LITERATURE REVIEWED
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 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.
Vollenweider, R. A. 1975. Input-Output Models With Special
Reference to the Phosphorus Loading Concept in Limnology.
Schweiz. Z. Hydrol. 37:53-84.
-------
17
VI. APPENDICES
APPENDIX A
CONVERSION FACTORS
-------
CONVT.iirO.OU FACICRS
HccUros x 2.471 •- fierce
Kilometers >'. 0.621-1 = latins '
Meters x 3.281 = feet
Cubic motors x 8.107 x 10 ~ aero/feet
Square kilometers x 0.3861 = square miles
Cubic met.o) s/sec x 3f».31G - 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
-------
FLOW INFORMATION FOk AHI/ONA
11/26/76
LAKE CODE 040* LUNA
TOTAL URAINAijt AMC.A OF i_ A * ti. < a (J KM)
TRI&UTAPY AKEAIbU
JAN
F£b
MAri
04Q4A1
040*A?
0404^7
93.b
75.4
18.1
0.020 0.028
O.Obl 0.113
O.OQ6 0.011
0.255
0.02fa
0.283
0.453
0.042
MAY
0.113
0.113
0.014
NOKMALiZEO
JUN JUL
AUG
O.Obb
0.014
0.003
O.OBb
0.014
0.00.5
0.023
0.006
OCT MOV uEC MEAN
O.Odb 0.02« 0.028 0.026 O.OBb
0.020 0.042 0.042 0.051 0.100
0.006 0.006 0.006 0.006 0.011
TOTAL UKAINA&L
bU" OF bUb-UKAlNAGt AREAS
MEAN MONTHLY FLOfcS ANl) DAILY FLO*S(CM5>
MONTH YtAn MEAN FLO* DAY
SI3.S
TOTAL FLOM IN
TOTAL FLO* OUT
1.34
1.02
0404A1
0404Z?
12
1
2
3
4
5
6
7
8
9
10
11
12
1
3
4
5
6
7
e
9
10
11
12
1
?
3
S
6
7
B
S
10
11
74
75
75
75
75
75
75
75
75
75
75
75
74
75
75
75
?3
7b
75
75
73
75
75
/4
75
75
75
75
7r>
I?
75
75
75
73
FLOW DAY
FLO* OAY
FLO*
0.003
0.014
0.003
0.2B3
0.566
0.227
0.042
0.071
0.034
0.042
0.011
0.011
0.020
0.014
0.023
U.2H3
0.566
0. 19d
O.OOb
0.001
0.001
0.023
0.003
0.014
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
8
1
fl
5
2
15
16
16
11
13
15
S
1
a
5
2
IS
16
16
11
13
IS
0.001
0.014
0.453
0.340 lo
0.425 18
0.034
0.099
0.034
O.Obl
0.011
0.011
0.023
0.014
0.340
0.453 IB
0.453 Ib
O.OC1
0.001
0.001
0.062
0.002
0.011
0.425
0.170
0.453
0.142
-------
APPENDIX C
PHYSICAL AND CHEMICAL DATA
-------
STO*ET kETXIEVAL UATE 7o/ll/2b
OJATL tUTROPblCATZGN S /t-.Y
C-PA-LAb VEGAS
040401
3J 49 45.0 109 05 00.0
LUNA
04001
llEPALtb 760109 2111202
0019 FEET OtKTH CLASS 00
DATE
r -tOM
ro
75/U4/30
75/06/18
75/10/06
TIME DEPTH
OF
DAY
10
10
10
10
11
11
11
09
09
09
45
45
45
45
10
10
10
45
45
45
FEET
0000
0005
0010
0013
0000
0003
0013
0000
ooos
0015
00010
WATEx
TEMP
CENT
lu.l
Id. 0
9.9
*.9
15.0
15.0
14.7
15.4
15.?
14.9
00300
UO
00077 00094
TkAusp CNDUCTVY
00400
Ph
<;tCCflI FIELU
M(,/L
7.3
?.b
7.0
7.6
8.0
H.O
f.4
4.8
7.0
2.b
INCHES MI
55
156
156
231
2e 1
232
230
226
219
220
147
146
148
SU
8.45
H.40
8.45
8.45
9.30
9.30
9.30
7.90
8.70
8.60
00410
T ALK
CAC03
MG/L
97
96
97
97
100
98
9b
91
94
97
00610 00625
NH3-N TOT KJtL
TUTAL
MG/L
0.020
0.020K
0.040
0.020K
0.080
0.020
0.020
0.050
0.060
0.120
N
MG/L
0.600
0.300
0.500
0.500
0.^00
0.700
0.500
0.600
0.800
0.800
00630
N02&N03
N-TOTAL
MG/L
0.020K
0.020K
0.030
0.020K
0.030
0.020K
0.020K
0.040
0.030
0.040
00671
PMOS-OIS
0*THO
Mb/L P
0.131
0.133
0.132
0.13C
0.102
0.10H
O.lOe
0.207
0.241
0.26J
00665 32217
DATE TIME OEPTH PHOS-TOT CHLMPnYL
KWOM Of A
TO DAY FEET Mfi/L P OG/L
75/04/30 10 45 0000 0.181 4.2
10 45 0005 O.ls?
10 45 0010 0.191
10 45 001S 0.197
75/00/lo 11 10 0000 0.134 4.0
11 10 0003 0.171
11 10 0013 0.151
75/10/06 09 45 0000 0.245 3.1
09 45 0003 0.292
09 45 0013 0.296
00031
INCDT LT
REMNING
PEHCEiMT
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
bTOKdf rtt-TRItA'AL UATc /b/ll/<26
-AlL EuTKOPnlCATION Si'-vtY
tPA-LAS VEGAS
33 49 30.0 109 U3 3J.O 3
LUNA LAKE
04001
OOOlU
DATE TIME DEPTH *ATEi<
r-
-------
APPENDIX D
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL UATE 76/11/30
NATL EUTROPMlCATIOM S 'EY
EPA- LAS
0404A1
33 49 38.0 109 04 45.0 4
SAN FHANCIbCU
04 15
0/LUNA LAivE 1104*1
BNK BELO SPL*Y 4.5 MI ESt Of-' ALPINE
11EPALES 3111204
0000 FEET OEHTrt CLASS 00
DATE
TO
74/12/08
75/02/01
75/03/08
75/04/05
75/04/18
75/05/02
75/05/16
75/06/15
75/07/16
75/08/16
75/09/11
75/10/13
75/11/15
00630 00625
TIME OEPTH N026.N03 TOT KJEL
OF N-TOTAL N
DAY FEcT
11
10
11
09
17
09
07
09
09
1 7
11
16
12
15
40
10
10
45
35
00
00
Ib
00
05
50
25
Mb/L
0
0
0
4
0
0
0
0
0
0
0
0
0
.032
.008
.006
.730
.005
.005
.015
.010
.010
.015
.030
.050
.040
MG/L
1.
1.
0.
0.
0.
0.
0.
0.
1.
0.
1.
1.
0.
700
500
975
550
650
7bO
350
650
100
650
200
000
900
00610 00671 00665
NH3-N PHOS-OIS PMOS-TOT
TOTAL OhTnO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
02b
024
028
020
025
Olb
025
030
055
090
030
020
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
f>
115
144
192
050
145
120
125
100
090
23C
200
240
250
MG/L P
0.220
0.170
0.240
0.180
0.180
0.165
0.220
0.153
0.150
0.250
0.230
0.260
0.290
-------
STORE! RETHIEVAL DATt 7^/11/30
NATL EUTROPHICATION bt 1Y
EPA- LAS VEGAS
DATE
FfcOM
TO
74/12/08
75/02/01
75/03/08
75/04/05
75/04/18
75/05/02
75/05/18
75/06/15
75/07/16
75/08/16
75/09/11
75/10/13
75/11/15
TIME
OF
DAY
11 30
11 10
11 20
09 30
18 00
09 3b
07 12
09 15
09 30
17 15
11 20
17 00
12 50
0404A2
33 49 55.0 109 06 30.0 4
SAN FHANCISCO Kiv/tK
04 Is ALPINt
T/LUNA LAKE 110491
DMT HO BROG 2.7 Ml tSE OF Ai_PlNt
11EHALES 21112G*
0000 FEET OEPTh CLASS 00
10630
!t,N03
'UIAL
IG/L
0.008
U.008
0.008
0.005
0.005
0.005
0.010
0.005
0.005
0.005
0.002
0.005
0.005
00625
TOT KJtL
N
MCi/L
0.600
1.100
1.050
0.750
0.700
0.700
1.275
1.100
0.600
0.750
1.900
0.700
1.600
00610
NH3-N
TOTAL
MG/L
0.010
0.024
0.094
0.040
0.025
0.015
0.030
0.025
0.025
0.020
0.085
0.025
0.020
00671
PMOS-DIS
OSTrtO
MG/L P
O.OVO
0.11*
0.12B
0.090
0.105
0.070
0.115
0.170
0.158
0.115
0.240
0.230
0.125
00665
PHOS-TOT
MG/L P
0.105
0.130
0.190
0.110
0.130
0.100
0.140
0.190
0.180
0.140
0.275
0.280
0.170
-------
STORE! RETRIEVAL DATE 76/11/30
NATL EUTKOPhlCATION S'. »'f.Y
EPA- LAS VEGAS
0404AA AS0404XA P000112
33 51 00.0 109 08 30.0 4
ALPINE COrtH. CENTt*
04 15 ALPlNf
T/LUNA LAKE 1104V1
UNNAMtO CHEEK
11EPALES 2141204
0000 FEET OEPTh CLASS 00
DATE
F^OM
TO
75/07/11
75/07/31
75/08/22
75/09/15
75/10/06
73/11/10
75/12/08
76/01/19
76/04/13
TIME DEPf
OF
00630
H N02KN03
N-TOTAL
DAY FEET Mt,/L
13
14
08
10
10
10
15
10
13
oo
45
15
30
30
30
00
0.02S
U.025
8.400
3.400
5.000
3.200
10.500
11.500
00625
TOT KjEL
N
MG/L
30.000
15.500
10.500
5.700
9.200
20.000
a. ooo
6.200
6.400
00610 00671
NH3-N PHOS-OIS
T01AL 0«THO
MG/L
ltt.000
7.400
0.120
0.100
0.082
0.043
0.340
0.037
MG/L r
a. 600
6.600
7.000
2.900
4.4UO
5.300
4.900
4.800
00665 50051 50053
PnOS-TOT FLOW CONDUIT
RATE FLOw-MGD
MG/L P INST M6l> MONTHLY
a. 600
7.600
7.700
3.500
4.900
10.000
8.700
5.800
6.700
-------
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 MEAD
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
0.24.0
0.040
0.400
0.045
0.040
0.060
0.505
500-
MEAN SEC
386. 000
466.600
420.231
396.250
464.667
369.667
449.154
239.000
440.750
429.917
474.500
453.600
MEAN
CHLORA
2.900
10.633
3.948
3.400
2.633
4.404
9.308
1.333
16.367
4.073
14.750
1.150
15-
MIN DO
9.000
14.800
10.800
12.200
9.003
8.600
14.900
12.2CO
12.000
14.000
14.600
8.000
MEOI
DISS OST
0.007
G.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 HQHAVE
0407 LAKE PLEASANT
0408 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 1
100 I
36 l
68 l
27 l
68 <
5)
1 2)
: 10)
: o)
: i)
I 9)
[ 6)
I 11)
[ 4)
1 7)
( 3)
I 7)
MEDIAN
INORG N
41 (
41 <
27 <
73 (
64 (
18 1
95 (
9 (
82 <
95 1
55 1
0 1
4)
4)
3)
8)
7)
: 2)
: 10)
[ 1)
[ 9)
[ 10)
I 6)
I 0)
500-
MEAN SEC
82 (
18 (
64 (
73 <
0 <
91 <
36 <
100 <
45 i
55 (
9 l
27 i
9)
: 2)
: 7)
: a)
l 0)
I 10)
[ 4)
[ ID
( 5)
( 6)
( 1)
( 3)
MEAN
CHLOfcA
73 (
18 (
55 (
64 (
82 (
36 <
27 (
91 (
0 1
45 <
9 1
100 <
8)
2)
6)
7)
9)
: 4)
; 3)
; iu)
; o)
[ 5)
[ 1)
[ 11)
15-
MIN DO
77 (
9 (
64 (
41 (
77 (
91 (
0 <
41 1
55 <
27 (
18 1
100 1
8)
1)
7)
4)
8)
: 10)
; o)
: 4)
! 6)
I 3)
: 2)
; ID
MEDIAN
UISS OhfTHO
73
18
91
0
9
32
100
32
45
64
55
82
( 8)
( 2)
( 10)
( 0)
( 1)
( 3)
< ID
I 3)
( 5)
( 7)
( 6)
( 9)
------- |