U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
EL VADO RESERVOIR
RIO ARRIBA COUNTY
NEW MEXICO
EPA REGION VI
WORKING PAPER No, 822
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
EL VADO RESERVOIR
RIO ARRIBA COUNTY
NEW MEXICO
EPA REGION VI
WORKING PAPER No, 822
WITH THE COOPERATION OF THE
NEW MEXICO ENVIRONMENTAL IMPROVEMENT AGENCY
AND THE
NEW MEXICO NATIONAL GUARD
JULY, 1977
-------
REPORT ON EL VADO RESERVOIR
RIO ARRIBA COUNTY, NEW MEXICO
EPA REGION VI
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. 822
OFFICE OF RESEARCH AND DEVELOPMENT
U.S. ENVIRONMENTAL PROTECTION AGENCY
July 1977
-------
CONTENTS
Page
Foreword i i
List of New Mexico 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
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11
FOREWORD
The National Eutrophlcation Survey was Initiated 1n 1972 1n
response to an Administration commitment to Investigate the nation-
wide threat of accelerated eutrophlcation to freshwater lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develop, 1n 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 eutrophlcation 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 eutrophlcation 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)]t water quality criteria/standards review
L§303(c)], clean lakes [§314(a,b)]t 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 New Mexico Environmental
Improvement Agency for professional involvement, to the New Mexico
National Guard for conducting the tributary sampling phase of the
Survey, and to those New Mexico wastewater treatment plant operators
who provided effluent samples and flow data.
The staff of the Surveillance Section, Water Quality Division,
New Mexico Environmental Improvement Agency provided invaluable lake
documentation and counsel during the Survey, reviewed the preliminary
reports and provided critiques most useful in the preparation of
this Working Paper Series.
Brigadier General Franklin E. Miles, the Adjutant General of
New Mexico, and Project Officer Colonel Marvin D. Bohannon, who
directed the volunteer efforts of the New Mexico National Guardsmen,
are also gratefully acknowledged for their assistance to the Survey.
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IV
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES
STATE OF NEW MEXICO
LAKE NAME
Alamogordo Reservoir
(Sumner Lake)
Bluewater Lake
Conchas Reservoir
Eagle Nest Lake
Elephant Butte Reservoir
El Vado Reservoir
Lake McMillan
Ute Reservoir
COUNTY
De Baca, Guadalupe
Valencia, McKinley
San Miguel
Col fax
Sierra
Rio Arriba
Eddy
Quay
-------
EL VADO RESERVOIR
Tributary Sampling Site
X Lake Sampling Site
Sewage Treatment Facility
+* Drainage Area Boundary
Map Location
Tierra Amarilla
03
EL VADO I
RESERVOIR
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REPORT ON EL VADO RESERVOIR, NEW MEXICO
STORE! NO. 3506
CONCLUSIONS
A. Trophic Condition:*
Based upon field observations, El Vado Reservoir is con-
sidered early eutrophic although biological response, as
measured by chlorophyll a_ levels, is more typical of that
observed in mesotrophic water bodies. Of the nine New Mexico
lakes (including Navajo Reservoir) sampled in 1975, four had
higher median total phosphorus levels (0.034 mg/1), none had
higher median inorganic nitrogen values (0.140 mg/1) and two
had higher median orthophosphorus levels (0.014 mg/1) than
El Vado Reservoir. Chlorophyll a_ values ranged from 1.2 yg/1
to 3.7 yg/1 with a mean of 2.2 yg/1. Potential for primary
productivity as measured by algal assay control yield was
high during the May sampling and moderately low during October.
Survey limnologists reported an algal bloom on the
October sampling date and noted that the lake was highly
turbid throughout the sampling year; low Secchi disc readings
(range of 0.4 to 1.5 m) suggest primary production might be
light-limited in the reservoir during much of the year.
*See Appendix E.
-------
B. Rate-Limiting Nutrient:
The algal assay results suggest colimitation by nitrogen and
phosphorus during the spring sampling period (05/05/75) and phos-
phorus limitation during the fall (10/01/75). The reservoir data
suggest primary limitation by nitrogen throughout the sampling
year.
C. Nutrient Controllability:
1. Point sources -
During the sampling year, point sources were calculated
to contribute 3.9% of the total phosphorus load to El Vado
Reservoir. The city of Chama contributed the entire load.
The present phosphorus loading of 2.67 g P/m^/yr is three
times that proposed by Vollenweider (1975) as "eutrophic" for
a lake of such volume and retention time. Elimination of the
known point source would still leave high nutrient inputs in
excess of Vollenweider's proposed levels. Although Vollen-
weider's model may not be applicable on highly turbid water
bodies, further examination of surrounding land uses and iden-
tification of additional point sources may provide answers to
further nutrient reductions.
2. Nonpoint sources -
Nonpoint sources, including precipitation, contributed
96.1% of the total phosphorus input during the sampling year.
-------
Rio Chama contributed 69.2%, Boulder Creek contributed 13.5%,
Willow Creek contributed 9.6% and minor tributaries and immediate
drainage contributed an estimated 3.1%.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS
Lake and drainage basin characteristics are itemized below.
Lake morphometry data were provided by Martin and Hanson (1966)
and Tony Drypolcher (personal communication). Tributary flow data
were provided by the New Mexico District Office of the U.S. Geo-
logical 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. Precipi-
tation 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:
1. Surface area: 13.07 km2.
2. Mean depth: 18.3 meters.
3. Maximum depth: 43.3 meters.
4. Volume: 239.914 x 106 m3.
5. Mean hydraulic retention time: 326 days.
-------
B. Tributary and Outlet:
(See Appendix B for flow data)
1. Tributaries -
Drainage- Mean Flow
Name area (km ) (m^/sec)
A-2 Rio Chama 1,243.2 6.18
B-l Willow Creek 499.9 1.94
C-l Boulder Creek 188.8 0.13
Minor tributaries and
immediate drainage - 67.4 0.28
Total 1,999.3 8.53
2. Outlet - A-l Rio Chama 2,012.4 8.53
C. Precipitation:
1. Year of sampling: 32.5 cm.
2. Mean annual: 35.6 cm.
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III. LAKE WATER QUALITY SUMMARY
El Vado Reservoir 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 three 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 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 38.1 meters at
Station 01, 23.2 meters at Station 02, and 14.6 meters at Station 03.
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.
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tl_ VttlJI I H1- V-.'N U
<".<"»0£
PHYSICAL AND CHEMICAL CHARACTERISTICS
PARAMETER
N* 3ANGE
/ S/75
MEDIAN
"AX
*°"*c. ^ T ^*
J .^ \ (j F
( 8/19/75
. s«*» = 3
>S) N* ^ANGE MEDIAN
MAX
DEPTH
(METEHS) N*
( 10/ 1/75
<;««* a 3
RANGE MEDIAN
MAX
DEPTH
RANGE
(METERS)
TFMSEWATU^E (OEG CE'jT)
O.-l.s M PEPTn
•••AX DEPTH**
DISSOLVED OXYGEN <*«/
O.-l.'i M DEPTH
MAX DEPTH**
CONDUCTIVITY (UMriOc)
0.-1.5 M DEPTH
MAX DEPTH**
PH (STANDARD UNITS)
0.-1.5 H DEPTH
MAX DEPTH**
TOTAL ALKALINITY .e
8.8
9.2
30S.
3?P.
8.0
8.0
9?.
95.
0 .0^4
0.052
1.0-
10.7-
0.0-
10.7-
0.0-
10.7-
0.0-
10.7-
n.O-
10.7-
0.0-
10.7-
l.S
34.1
1.5
34.1
1.5
34.1
1.5
34.1
1.5
34.1
1.5
34.1
6
3
6
3
6
3
b
3
6
3
6
3
18.0- 18.8
6.3- 11.2
5.2- 6.4
2.4- 5.6
170.- 172.
106.- 178.
7.8- 8.6
7.3- 7.8
59.- 66.
52.- 78.
0.018-0.039
0.120-0.168
18.2
8.2
6.0
2.4
172.
110.
8.0
7.5
64.
54.
0.023
0.131
0.0-
14.6-
0.0-
14.6-
0.0-
14.6-
0.0-
14.6-
0.0-
14.6-
0.0-
14.6-
1.5
38.1
1.5
38.1
1.5
38.1
1.5
38.1
1.5
38.1
1.5
38.1
6
3
6
3
6
3
6
3
6
3
6
3
16.9- 17.3
12.5- 16.5
6.2- 7.0
4.3- 6.8
149.- 155.
105.- 155.
7.9- B.2
7.7- 8.3
77.- 87.
58.- 80.
0.023-0.030
0.028-0.067
17.2
14.0
6.9
5.0
153.
115.
8.2
7.8
84.
72.
0.028
0.065
0.0- 1.5
12.5- 31.4
0.0- 1.5
12.5- 31.4
0.0- 1.5
12.5- 31.4
0.0- 1.5
12.5- 31.4
0.0- 1.5
12.5- 31.4
0.0- 1.5
12.5- 31.4
DISSOLVED ORTHO P
1
6
3
6
3
0.010-0
0.010-0
0.100-0
0.100-0
0.0«0-0
0.040-0
0.200-0
0.200-0
.023
.019
.130
.130
.060
.070
.700
.600
0.013
0.010
0.110
o.no
0.0&5
0.140
0.550
0.300
0.0-
10.7-
0.0-
10.7-
0.0-
10.7-
0.0-
10.7-
1.5
34.1
1.5
34.1
1.5
34.1
1.5
34.1
6
3
h
3
6
3
6
3
0.003-0.007
0.031-0.054
0.020-0.020
0.140-0.230
0.020-0.020
0.020-0.020
0.300-0.500
0.200-0.500
0.005
0.050
0.020
0.200
0.020
0.020
0.400
0.400
0.0-
14.6-
0.0-
14.6-
0.0-
14.6-
0.0-
14.6-
1.5
38.1
1.5
38.1
1.5
38.1
1.5
38.1
f,
3
6
3
6
3
6
3
0.006-0.012
0.006-0.036
0.020-0.030
0.020-0.180
0.020-0.020
0.020-0.020
0.200-0.500
0.200-0.400
0.007
0.034
0.025
0.160
0.020
0.020
0.200
0.200
0.0- 1.5
12.5- 31.4
0.0- 1.5
12.5- 31.4
0.0- 1.5
12.5- 31.4
0.0- 1.5
12.5- 31.4
SECCHI DISC (METERS)
0.4- 0.6
0.4
0.9- 1.5
1.5
0.6- 0.9 0.9
» N = NO. OF SAMPLE?
»» MAXIMUM DEPTH SAMPLED AT EACH SITE
s = NO. OF SITES SAMPLED ON TnIS DATE
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8
B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
05/05/75
Dominant
Genera
1.
2.
3.
4.
Cryptomonas
Chroomonas ?
Cyclotella
Nitzschia
Algal
Units
per ml
154
92
31
31
08/19/75
10/01/75
Other genera
Total
308
1.
2.
1.
2.
3.
Chroomonas ?
Aphanizomenon
Other genera
Total
Aphanizomenon
Chroomonas
Cryptomonas
Other genera
Total
490
31
521
234
176
79
489
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2. Chlorophyll a. -
Sampling Station Chlorophyll a_
Date Number (yg/1)
05/05/75 01 1.2
02 2.2
03 2.6
08/19/75 01 1.9
02 1.6
03 2.4
10/01/75 01 1.0
02 3.7
03 3.1
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10
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N Maximum Yield
Spike (mg/1) Cone, (mg/1) Cone, (mg/1) (mg/l-dry wt.)
a. 05/05/75
Control 0.020 0.090 2.4
0.05 P 0.070 0.090 2.3
0.05 P + 1.0 N 0.070 1.090 24.0
1.00 N 0.020 1.090 2.0
b. 10/01/75
Control 0.005 0.100 0.3
0.05 P 0.055 0.100 7.6
0.05 P + 1.0 N 0.055 1.100 20.1
1.00 N 0.005 1.100 0.2
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11
2. Discussion -
The control yields of the assay alga, Selenastrum capricor-
nutum, indicate that the potential for primary productivity in El
Vado Reservoir was high during the spring sampling (05/05/75) and
moderately low during the October sampling (10/01/75). In the
May assay, no growth response beyond that of the control was noted
with the addition of either nitrogen or phosphorus alone, but was
observed with the simultaneous addition of both nutrients, suggesting
colimitation by nitrogen and phosphorus. In the October assay,
the addition of phosphorus alone and in combination with nitrogen
produced a significant increase in yield over that of the control,
indicating phosphorus limitation at this time. Spikes of only
nitrogen did not increase growth beyond the control yield in this
assay.
The mean inorganic nitrogen to orthophosphorus ratios (N/P) '
in the lake data were 11/1 in the spring and 5/1 in the summer and
fall suggesting primary limitation by nitrogen (a mean N/P ratio
of 14/1 or greater generally reflects primary limitation by phos-
phorus).
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12
IV. NUTRIENT LOADINGS
(See Appendix D for data)
For the determination of nutrient loadings, the New Mexico
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
provided by the New Mexico 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 Willow Creek and Boulder
Creek, at Stations B-l and C-l and multiplying the means by the ZZ
2
area in km.
The operator of the Chama wastewater treatment plant provided
monthly effluent samples and corresponding flow data.
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13
A. Waste Sources:
1. Known municipal
Name
Chama
Pop.*
Served
2,000
Treatment*
Trickling
Filter
Mean Flow
(m3/d x IP3)
0.333
Receiving
Water
Chamanita River
to Chama River
2. Known industrial - None
*Provided by treatment plant operator.
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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 Rio Chama 24,175 69.2
B-l Willow Creek 3,345 9.6
C-l Boulder Creek 4,710 13.5
b. Minor tributaries and immediate
drainage (nonpoint load) - 1,080 3.1
c. Known municipal STP's -
Chama 1,375 3.9
d. Septic tanks* - 5 <0.1
e. Known industrial - None
f. Direct precipitation** - 230 0.7
Total 34,920 100.0%
2. Outputs - A-l Rio Chama 16,285
3. Net annual P accumulation - 18,635
*Estimate based on 11 lakeshore residences.
**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 Rio Chama 189,920 74.6
B-l Willow Creek 29,805 11.7
C-l Boulder Creek 13,590 5.3
b. Minor tributaries and immediate
drainage (nonpoint load) - 4,450 1.7
c. Known municipal STP's -
Chama 3,000 1.2
d. Septic tanks* - 115 <0.1
e. Known industrial - None
f. Direct precipitation** - 14.110 5.5
Total 254,990 100.0%
2. Outputs - A-l Rio Chama 269,615
3. Net annual N export*** - 14,625
*Estimate based on 11 lakeshore residences.
**Estimated (See NES Working Paper No. 175).
***Export probably due to unknown sources and/or sampling error.
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16
D. Mean Annual Nonpoint Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Rio Chama 19 153
Willow Creek 7 60
Boulder Creek 25 72
E. Yearly Loadings:
In the following table, the existing phosphorus annual
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 apply to lakes with
short hydraulic retention times or in which light penetration is
severely restricted by high concentrations of suspended solids
in the surface waters.
Total Yearly
Phosphorus Loading
(g/m2/yr)
Estimated loading for El Vado Reservoir 2.67
Vollenweider's "eutrophic" loading 0.86
Vollenweider's "oligotrophic" loading 0.43
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17
V. LITERATURE REVIEWED
Drypolcher, Tony. 1975. Personal communication (lake morphometry).
New Mexico Environmental Improvement Agency, Santa Fe, New Mexico.
Martin, R. 0. R., and R. L. Hanson. 1966. Reservoirs in the United
States. Geological Survey Water Supply Paper 1838. United States
Department of Interior, Geological Survey, Washington, D.C.
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. Hydro!. 37:53-84.
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18
VI. APPENDICES
APPENDIX A
CONVERSION FACTORS
-------
CONVERSION .FACTORS
Hectares x 2.471 = acres
Kilometers x 0.6214 = miles
Meters x 3.281 = feet
Cubic meters x 8.107 x 10 = 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
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APPENDIX B
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION FOR NEW MEXICO
IS/16/76
LAKE CODE 3506
EL VAOO SESEKV01K
TOTAL DRAINAGE AREA OF LAKECSG KM) 2012.4
NORMALIZED FLOWS(CMS)
TRIBUTARY AREAISQ
3S06A1
350681
3506C1
3506ZZ
2012.4
1243.2
499.9
188. 8
90.5
JAN
1.08
0.96
0.034
0.011
0.042
FE6
3.23
2.38
0.651
0.045
0.108
MAR
7.62
2.124
0.159
0.246
APR
13.22
9.91
2.549
0.266
0.481
MAY
33.41
31.15
0.79?
0.127
1.359
JUN
11.16
9.06
1.756
0.059
0.396
JUL
6.43
3.96
1.982
0.303
0.207
AUG SEP
4.98 3.23
3.40 2.46
1.019 0.623
0.275 0.136
0.181 0.119
OCT
2.55
2.07
0.218
0.116
0.105
MOV
0.425
0.031
0.093
OEC
12.18
1.22
10.902
0.006
0.051
MEA»
8.5;
1.94!
0.12'
0.28'
SUMMARY
TOTAL
SUM OF
DRAINAGE AREA OF. LAKE =
SUB-DRAINAGE AREAS =
2012.4
201?. 4
TOTAL FLOW IN a
TOTAL FLOW OUT =
101.
101.
76
71
MEAN MONTHLY FLOWS AND DAILY FLOWS (CMS)
TRIBUTARY
3506A1
MONTH
YEAR
MEAN FLOW DAY
FLOW DAY
FLOW DAY
FLOW
3506A2
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
a
9
10
11
74
75
75
75
75
75
75
75
75
75
75
75
74
75
75
75
75
75
75
75
75
75
75
75
7.929
0.793
0.821
0.878
22.370
65.412
18.406
9.345
7.362
2.464
4.446
10.930
1.019
0.708
0.595
0.595
14.442
69.093
35.113
9.061
2.265
2.039
1.161
1.331
8
11
9
9
%
3
7
«
9
7
5
2
«
11
9
9
5
3
7
3
9
7
5
2
1.076
0.765
0.765
1.076
0.850 19
27.467 17
2.662
10.194
9.911
0.736
6.201
0.963
0.991
1.274
1.416
2.265
6.654 19
26.788 17
55.218
8.778
2.209
1.812
1.189
1.784
2.718
91.180
9.543
111.002
-------
TRIBUTARY FLOW INFORMATION FOR NliW MiiJUU.i .<
LAKE CODE 3506 EL V4DO RfcSERVGIR
MEAN MONTHLY FLOWS AND DAILY FLOWS
TRIBUTARY MONTH YEAR MEAN FLOW OAv FLOW DAY FLOW DAY FLOW
350631 12 74 17.556 8 29.166
1 75 0.0 11 0.0
2 75 0.0 2 0.0
3 75 29.506 9 0.0
4 75 23.503 *> 1.133 19 18.010
5 75 1.388 3 1.133 17 1.27*
6 75 0.793 7 0.425
7 75 0.736 « 1.133
8 75 0.227 9 0.0
9 75 0.085 7 0.0
10 75 0.167 5 0.0
11 75 0.0 2 0.0
3506C1 12 74 0.004
1 75 0.008
2 75 0.012
3 75 0.018
4 75 0.453 5 0.210 19 0.651
5 75 0.249 3 0.096 17 0.396
6 75 0.099
7 75 . 0.453
8 75 0.396
9 75 0.311 7 0.0
10 75 0.176 S 0.0
11 75 0.201
3506ZZ 12 74 0.034
1 75 0.031
2 75 0.028
3 75 0.028
4 75 0.821
5 75 2.662
6 75 0.651
7 75 0.311
8 75 0.269
9 75 0.133
10 75 0.076
11 75 0.085
-------
APPENDIX C
PHYSICAL AND CHEMICAL DATA
-------
STOSET RETRIEVAL DATE
NATL eUTROfhlC.'iTION SURVEY
EPA-LAS VEGAS
/TYPA/AMBNT/LAKE
DATE
TO
75/05/05
75/08/19
75/10/01
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
14
14
14
14
14
14
07
07
07
07
07
07
10
10
10
10
10
10
45
45
45
45
45
45
30
30
30
30
30
30
30
30
30
30
30
30
0000
0005
0015
0045
0080
0112
0000
0005
0015
0040
0080
0125
0000
0005
0015
0035
0070
0103
CENT
6
7
7
6
7
6
18
18
17
11
7
6
17
17
17
16
13
12
.8
.6
.6
.9
.4
.2
.4
.1
.7
.5
.4
.3
.3
.2
.1
.7
.8
.5
00300
DO
MG/L
8
a
8
9
7
a
6
5
5
5
5
2
7
6
5
6
4
5
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
8
8
6
2
2
6
0
2
0
0
8
4
0
2
2
4
8
0
350601
36 35 43.0 106 ** 00.0 3
EL VADO RESERVOIR
35039 NEW MEXICO
1209<>1
11EPALES
00300
DO
MG/L
8.8
8.8
8.6
9.2
7.2
8.6
6.0
5.2
5.0
5.0
5.8
2.4
7.0
6.2
5.2
6.4
4.8
5.0
00077 00094
TRANSP CNOUCTVY
SECCHI FIELD
INCHES MICROMHO
16 301
309
301
308
308
344
58 170
170
169
113
99
110
36 149
151
147
135
108
105
0116
00400
PH
SU
8.00
7.90
8.10
8.10
8.00
8.00
8.60
8.30
8.10
7.95
7.70
7.50
8.20
8.15
8.00
7.80
7.70
7.70
04001002
FEET DEPTH CLASS
00410
T ALK
CAC03
MG/L
92
92
91
93
93
96
59
63
64
51
49
54
87
87
84
53
55
58
00610
NH3-N
TOTAL
MG/L
0.050
0.040
0.050
0.080
0.050
0.070
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00
00625
TOT KJEL
N
MG/L
0.600
0.500
0.500
0.500
0.500
0.600
0.300
0.300
0.400
0.400
0.300
0.500
0.300
0.200
0.200
0.400
0.400
0.400
00630 00671
N02&N03 PHOS-OIS
N-TOTAL ORTHO
MG/L
0.110
0.110
0.120
0.130
0.120
0.130
0.020K
0.020K
0.020
0.100
0.160
0.230
0.030
0.030
0.080
0.160
0.160
0.180
0.014
0.013
0.014
0.017
0.014
0.010
0.004
0.005
0.005
0.030
0.036
0.054
0.010
0.012
0.023
0.036
0.037
0.036
DATE
FROM
TO
75/05/05
75/08/19
75/10/01
00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL INCDT LT
OF A REMNING
DAY FEET
14
14
14
14
14
14
07
07
07
07
07
07
10
10
10
10
10
10
45
45
45
45
45
45
30
30
30
30
30
30
30
30
30
30
30
30
0000
0005
0015
0045
0080
0112
0000
0005
0015
0040
0080
0125
0000
0005
0015
0035
0070
0103
MG/L P
0.
0.
0.
0.
0.
0.
0,
0,
0,
0.
0.
0,
0.
0.
0.
0.
0.
0,
.035
.032
.034
.031
,034
,091
,018
,018
.019
,046
.053
,131
,029
,030
,039
.062
,062
.065
UG/L PFRCENT
1.2
1.9
1.0
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORET RETRIEVAL DATE 7-&/12/16
NATL EUTROPHlCATION S
EPA-LAS VEGAS
/TYPA/AMBNT/LAKE
DATE
FROM
TO
75/05/05
75/08/19
75/10/01
TIME
OF
DAY
15 30
15 30
15 30
15 30
15 30
08 00
08 00
08 00
08 00
08 00
08 00
10 10
10 10
10 10
10 10
10 10
DEPTH
FEET
0000
000*5
0015
0030
0055
0000
0005
0015
0030
0050
0076
0000
0005
0015
0040
0063
00010
WATER
TEMP
CENT
8.1
8.0
8.2
7.9
6.8
18.6
18.8
17.4
13.0
10.4
8.2
17.2
17.3
17.2
16.9
14.0
350602
36 37 48.0 1C6 44 55,0 3
EL VAOO RESERVOIR
35039 NEW MEXICO
120991
11EPALES
04001002
0055 FEET DEPTH CLASS
00300
00
MG/L
8.6
8.8
9.2
9.2
9.2
6.4
6.4
4.8
4.4
5.6
5.6
7.0
7.0
6.4
5.6
4.3
00077
THANSP
StCCHI
INCHES
14
58
36
00094
CNOUCTVY
FIELD
MICHOMHO
282
280
282
283
280
171
172
175
134
115
106
155
154
154
155
115
00400
PH
SU
8.20
8.10
8.00
8.10
8.00
8.00
8.00
7.80
7.70
7.60
7.30
8.20
8.20
8.10
7.90
7.85
00410
T ALK
CAC03
MG/L
d8
88
89
89
89
61
64
69
63
54
52
82
82
86
77
72
00610
NH3-N
TOTAL
MG/L
0.050
0.060
0.050
0.050
0.0*0
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00
00625
TOT KJEL
N
MG/L
0.700
0.700
0.600
0.600
0.200
0.400
0.400
0.400
0.400
0.400
0.400
0.200K
0.200
0.300
0.200
0.200
00630
N028.N03
N-TOTAL
MG/L
0.120
0.130
0.130
0.130
0.130
0.020*
0.020K
0.020K
0.070
0.110
0.140
0.020K
0.020K
0.040
0.120
0.160
00671
PHOS-DIS
ORTrlO
MG/L P
0.019
0.023
0.020
0.020
0.019
0.007
0.005
0.005
0.025
0.031
0.031
0.007
0.007
0.016
0.033
0.034
DATE
FROM
TO
75/05/05
75/08/19
75/10/01
00665 32217 00031
TIME DEPTH PHOS-TOT CHLHPHYL INCDT LT
OF A REMNING
DAY FEET
15
15
15
15
15
08
08
08
08
08
08
10
10
10
10
10
30
30
30
30
30
00
00
00
00
00
00
10
10
10
10
10
ooon
0005
0015
0030
0055
0000
0005
0015
0030
0050
0076
0000
0005
0015
0040
0063
MG/L P
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.053
.051
.049
.048
.052
.019
.028
.034
.055
.068
.120
.023
.030
.031
.037
.067
UG/L PERCENT
2.2
1.6
3.7
K VALUE mm TO BE LESS
-------
STORET RETRIEVAL DATE 76/ld'/.fe
K>ATL E'JTRCPHJCATIOV SURVEY
EPA-LAS VEGAS
/TYPA/AM8NT/LAKE
350603
36 37 45»0 106 45 52.0 3
EL VADO RESERVOIR
35039 NEW MEXICO
120992
11EPALES 04001002
0038 FEET DEPTH CLASS 00
DATE
FROM
TO
75/05/05
75/08/19
75/10/01
TIME DEPTH
OF
DAY FEET
16 35
16 35
16 35
16 35
08 30
08 30
06 30
08 30
08 30
09 45
09 45
09 45
09 45
0000
0005
0015
0035
0000
0005
0015
0030
004B
0000
0005
0015
0041
00010
MATER
TtMP
CENT
7.9
8.0
7.9
7.9
18.0
18.1
18.0
14.2
11.2
16.9
17.0
16.9
16.5
00300
00
MG/L
8.8
9.2
9.2
9.2
5.6
6.0
5.8
3.0
2.4
6.8
6.6
6.4
6.8
00077 00094
TKANSP CNDUCTVY
-------
APPENDIX D
TRIBUTARY AND HASTEHATER
TREATMENT PLANT DATA
-------
E'JTROPHICATION S'J<*VFY
EPA- LAS VEGAS
3506A1
36 35 39.0 106 <>« 30.0
35 15 TIERRA A*RLLA
0/EL V&DO KESERVOIK 120991
6ELO DAM .5 MI S OF EL VADO CITY
lltPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FPOM
TO
74/12/08
75/01/11
75/02/09
75/03/09
75/04/05
75/04/19
75/05/03
75/05/17
75/06/07
75/07/08
75/08/09
75/09/07
75/10/05
75/11/02
TIME
OF
DAY
12 31
13 40
10 45
10 50
10 52
10 55
11 45
11 45
14 35
13 30
10 45
13 22
11 00
14 15
FEET
00630
N02fcN03
N-TOTAL
MG/L
0.080
0.096
0.064
0.070
0.105
0.085
0.110
0.120
0.120
0.125
0.180
0.085
0.195
0.075
00625
TOT KJEL
N
MG/L
0.300
1.000
0.300
0.550
1.250
2.500
1.800
0.400
0.650
0.650
0.850
0.400
0.900
0.300
00610
NM3-N
TOTAL
MG/L
0.015
0.012
0.008K
0.035
0.030
0.035
0.040
0.025
0.030
0.020
0.025
0.010
0.015
0.030
00671
PHOS-OIS
ORTHO
MG/L P
0.010
0.009
0.005
0.020
0.005K
0.010
0.013
0.035
0.025
0.050
0.030
0.040
0.035
00665
PHOS-TOT
MG/L P
0.030
0.017
0.010
0.120
0.020
0.020
0.040
0.050
0.080
0.080
0.090
0.130
0.120
0.100
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STOPET RETRIEVAL OATE >6/12/16
SiATl EUTROPMICATJON SURVEY
EPA- LAS VE6AS
DATE
F*OM
TO
74/12/08
75/01/11
75/02/09
75/03/09
75/04/05
75/04/19
75/05/03
75/05/17
75/06/07
75/07/08
75/08/09
75/09/07
75/10/05
75/11/02
TIME
OF
DAY 1
11 31
12 25
10 00
12 55
10 40
10 25
11 15
11 00
14 05
13 05
10 15
13 45
10 35
13 30
FEET
3506A2
36 33 45.0 1"6 37 57.0 *
RIO CHAMA
35 15 TIERRA AMRLLA
T/EL VAOO RESERVOIR 120991
0»T RO 9R06 3.5 Ml riSW OF LAP'jENTE
11EPALES 311120*
0000 FEET DEPTH CLASS 00
0630
J.N03
OTAL
1G/L
0.024
0.232
0.216
0.200
0.155
0.360
0.145
0.165
0.030
0.010
0.010
0.010
0.005
0.010
00625
TOT KJEL
N
MG/L
0.400
2.000
0.500
0,437
0.500
1.750
0.850
1.400
0.300
0.450
1.500
0.300
1.000
0.600
00610
NH3-N
TOTAL
MG/L
0.005
0.104
0.056
0.030
0.020
0.040
0.020
0.025
0.020
0.015
0.015
0.010
0.010
0.075
00671
PHOS-D1S
ORTHO
MG/L P
0.020
0.042
0.045
0.045
0.025
0.050
0.040
0.032
0.030
0.020
0.055
0.020
0.020
0.030
00665
PMOS-TOT
MG/L P
0.030
0.065
0.070
0.120
0.170
0.140
0.165
0.370
0.110
0.070
0.055
0.050
0.050
0.050
-------
NATL EUTROPHICATION SURVEY
EPA- LAS VEGAS
3506B1
36 40 10.0 106 42 10.0 4
HILLOw CREEK
35 15 TIERRA AMRLLA
T/EL VAOO RESERVOIR 120991
8NK 1500 FT S OF HT 95
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
74/12/08
75/01/11
75/03/09
75/04/05
75/04/19
75/05/03
75/05/17
75/06/07
75/07/08
75/08/09
75/09/07
75/10/05
75/11/02
TIME
OF
DAY 1
13 44
16 45
13 00
11 SO
11 45
12 40
12 45
13 25
14 25
12 00
14 45
12 00
15 20
FEET
00630
N02fcN03
N-TOTAL
MG/L
0.046
0.236
0.190
0.140
0.095
0.090
0.080
0.045
0.090
0.055
0.025
0.015
0.170
00625
TOT KJEL
N
MG/L
0.300
2.150
3.800
0.800
0.650
0.250
0.200
0.350
0.250
0.750
0.400
0.700
0.200
00610
NH3-N
TOTAL
MG/L
0.007
0.084
0.030
0.035
0.270
0.015
0.020
0.020
0.005
0.020
0.015
0.015
0.010
00671
PMOS-DIS
OflTHO
MG/L P
0.005
0.027
0.040
0.010
0.020
0.015
0.015
0.030
0.005
0.035
0.005K
0.010
0.005
00665
OHOS-TOT
MG/L P
0.020
0.062
0.160
0.050
0.095
0.040
0.050
0.100
0.040
0.040
0.0?0
0.030
0.030
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STQPET RETRIEVAL DATE 76/12/16
NATL FUTROPnlCATIO*. SURVEY
EPA- LAS VEGAS
3506C1
36 39 55.C 106 *6 20.0 4
BOULOEH CREEK
35 15 BOULDER LAKE
T/EL VADO RESERVOIR 120992
RT 95 BRDG 3 MI N£ OF POUNO PANCH
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
75/04/05
75/04/19
75/05/03
75/05/17
TIM£ DEPTH
OF
DAY FEET
12 24
12 30
12 35
13 20
00630
N02&N03
N-TOTAL
MG/L
0.110
0.065
0.030
0,005
00625
TOT KJEL
to
MG/L
11.500
2.200
1.200
1.200
00610
S|H3-N
TOTAL
MG/L
0.0*0
0.160
0.030
0.015
00671
PHOS-DIS
ORTHQ
MG/L P
0.015
0.020
0.020
0.005
00665
PHOS-TOT _
MG/L C
7.100
2.500
0.080
0.040
-------
S T ": ~ r_ T -e E T - 11 » ~ L J t T t
'.&T'.. -'JT-•'/-"-1 "it T ; . i.
EPA- l_ A c, Vf'-A-
OATF
Form
TO
74/11/26
CP(T>-
7»/l 1/26
74/12/26
O < T) -
74/ 12/2*
75/02/26
CP-
75/02/26
75/03/28
75/04/30
75/06/02
75/06/28
75/07/30
75/08/29
75/09/29
75/10/30
75/12/01
75/12/30
THE OFPT-
CF
'JAY FEET
11
16
10
15
10
15
16
15
15
11
16
15
16
16
15
16
30
00
00
(10
00
00
00
00
00
30
00
00
oo
00
00
00
i» 0 f: 30
11 N 0 ? *, '^ 0 3
N-TOTAL
M(,/L
0
0
0
0
5
0
u
u
i)
,)
0
0
0
.240
.?4Q
.080
.080
.100
.550
.125
.050
.069
.075
.200
.050
.040
OQ6?:>
TCT isJtL
N
15
29
27
14
25
7
8
11
13
17
22
30
33
.000
.000
.000
.000
.000
.300
.200
.500
.000
.500
.000
.000
.000
Mo/L
4
1<*
(j
4
0
0
u
0
0
2
4
U
20
.600
.500
.430
.700
.062
.U77
.055
.575
.no
.700
.600
.500
.000
00671
PHOS~0 I b
U^TJ^O
M3/L P
11
15
6
0
2
5
7
fl
9
10
12
12
.500
.000
.400
.610
.900
.450
.400
.400
.600
.500
.600
.000
35
T/EL
000
00665
PHOS-TOT
H(j/L P
12.300
17.000
12.500
7.700
1.600
4.600
6.000
7.850
9. hOO
11.000
17.000
13.000
13.500
5? bO.O 106 3b lb.0 4
AK u
I'D CHA«A
" -*FS.
xlv£* TO C"AMA RIVEH
__ , 00001004
0000 FEET OE^-Tn CLASS 00
SOObl 50053
FLO* CONDUIT
KATE KLOw-MGO
MGO MONTHLY
'002000
0.050
0.0^0
0.040
0.050
0.060
0.050
0.070
0.060
0.070
0.050
0.050
O.OSO
0.500
0.050
0.040
0.050
0.050
0.050
0.050
0.060
0.070
0.070
0.050
O.OSO
0.055
0.500
-------
APPENDIX E
PARAMETRIC RANKINGS OF LAKES
SAMPLED BY NES IN 1975
STATE OF NEW MEXICO
Mean or median values for six of the key parameters evaluated
in establishing the trophic conditions of New Mexico 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.
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LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
0812 NAVAJO RESERVOIR
3501 ALAMOGOROO
3502 BLUE WATER LAKE
3503 CONCHAS RESERVOIR
350* EAGLE NEST LAKE
3505 ELEPHANT BUTTE RESERVOIR
3506 EL VADO RESERVOIR
3507 LAKE MACMILLAN
3509 UTE RESERVOIR
MEDIAN
TOTAL P
0.025
0.025
0.036
0.020
0.181
0.083
0.034
0.097
0.021
MEDIAN
INORG N
. 0.130
0.050
0.140
0.040
0.070
0.110
0.140
0.045
0.040
500-
MEAN SEC
420.92.8
469.667
480.125
451.833
455.750
475.750
466.444
489.778
448.750
MEAN
CHLORA
2.164
5.867
3.867
3.275
13.357
6.758
2.189
14.133
3.242
15-
MIN DO
11.200
10.600
11.400
14.400
14.400
14.200
12.600
10.100
13.800
MEOIAf
DISS ORTH(
0.009
0.003
0.012 '
O.JJ04
0.132
o.o§a
0.0.14
0,00?
0.004
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PERCENT OF LAKES WITH HIGHER VALUES (NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
0812 NAVAJO RESERVOIR
3501 ALAMOGOROO
3502 BLUE WATER LAKE
3503 CONCHAS RESERVOIR
3504 EAGLE NEST LAKE
3505 ELEPHANT BUTTE RESERVOIR
3506 EL VADO RESERVOIR
3507 LAKE MACMILLAN
3509 UTE RESERVOIR
MEDIAN
TOTAL P
63 (
75 (
38 (
100 (
0 (
25 (
50 (
13 (
88 (
5)
6)
3)
8)
0)
2)
4)
1)
7)
MEDIAN
INORG N
25 (
63 (
6 (
94 (
50 {
38 (
6 (
75 (
94 (
2)
5)
0)
7)
4)
3)
0)
6)
7)
500-
MEAN SEC
100 (
38 (
13 (
75 <
63 (
25 <
50 (
0 (
88 (
8)
3)
1)
6)
5)
2)
4)
0)
7)
MEAN
CHLORA
100 (
38 (
50 (
63 (
13 {
25 {
88 (
0 (
75 (
8)
3)
4)
5)
1)
2)
7)
0)
6)
15-
MIN DO
75 (
88 (
63 (
6 (
6 (
25 (
50 (
100 (
38 (
6)
7)
5)
0)
0)
2)
4)
8)
3)
MEDIAN
DISS ORTHO
56 (
100 (
38 <
81 (
0 (
13 (
25 (
56 (
81 (
4)
8)
3)
6)
0)
1)
2)
4)
6)
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