U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LAKE m\(im
EDDY COUNTY
NEW MEXICO
EPA REGION VI
WORKING PAPER No, 823
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
LAKE MCMILLAN
EDDY COUNTY
EPA REGION VI
WORKING PAPER No, 823
WITH THE COOPERATION OF THE
NEW MEXICO ENVIRONMENTAL IMPROVEMENT AGENCY
AND THE
NEW MEXICO NATIONAL GUARD
JULY, 1977
-------
REPORT ON LAKE MCMILLAN
EDDY 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. 823
OFFICE OF RESEARCH AND DEVELOPMENT
U.S. ENVIRONMENTAL PROTECTION AGENCY
July 1977
-------
CONTENTS
Page
Foreword n n
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 18
VI. Appendices 19
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ii
FOREWORD
The National EutropMcatlon Survey was Initiated In 1972 1n
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, 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 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 1s formatted to provide state
environmental agencies with specific information for basin
planning [§303(e)]> water quality criteria/standards review
[§303(c)L clean lakes [§314(a,b)], and water quality monitoring
[§106 and §305(b)] activities mandated by the Federal Water
Pollution Control Act Amendments of 1972.
-------
ill
Beyond the single lake analysis, broader based correlations
between nutrient 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.
-------
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
-------
h'ibiitary Sanpllng Site
X I''ke Sampling Site
• fii:Maiji.> Treatment Fai.ilil.y
5 to 15 20 Km.
~
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REPORT ON LAKE MCMILLAN, NEW MEXICO
STORE! NO. 3507
I. CONCLUSIONS
A. Trophic Condition:*
Survey data indicate Lake McMillan is 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 a_ values in the lake ranged from 8.1 yg/1
in the spring to 18.7 yg/1 in the fall with a mean of 14.1
ug/1. Potential for primary productivity as measured by
algal assay control yields was low in spring and high in the
fall. Secchi disc visibility was low. Of the nine New Mexico
lakes sampled (including Navajo Reservoir) in 1975, only one
had higher median total phosphorus values (0.097 mg/1), six
had higher median inorganic nitrogen levels (0.045 mg/1), and
four had higher median orthophosphorus values (0.009 mg/1)
than Lake McMillan.
Survey limnologists did not report any algal blooms or
macrophyte problems during their visits to the lake. Other
studies (New Mexico Environmental Improvement Agency, 1974)
indicate that salinity and fluctuating water levels due to
*See Appendix E.
-------
draw down for irrigation are the major water quality problems
in Lake McMillan.
B. Rate-Limiting Nutrient:
The algal assay results indicate that Lake McMillan was
limited by available phosphorus during the sample collection
times (05/01/75, 10/02/75). Lake data suggest primary limi-
tation by phosphorus in the spring and nitrogen limitation
in the summer and fall.
C. Nutrient Controllability:
1. Point sources -
The city of Artesia contributed an estimated 56.2%
of the total phosphorus load to Lake McMillan during the
sampling year. However, actual annual contributions
to Lake McMillan from this source are probably somewhat
less than the calculated values since a portion of the
treatment plant discharge is diverted for irrigation
(U.S. EPA, 1971). In addition, there are sewage treat-
ment facilities upstream in the Pecos River at Hagerman
and Roswell which are not included in the lake nutrient
budget (Section IV B-C) due to their distance from the
reservoir.
p
The present phosphorus loading of 1.05 g P/m/yr
is almost twice that proposed by Vollenweider as
-------
"eutrophic" for a lake of such volume and hydraulic retention
time. The New Mexico Environmental Improvement Agency (1974)
reports that high nutrient levels in the reservoir can be
attributed to surrounding land use practices, such as over-
grazing, irrigational runoff and drainage from surrounding
feedlots. Additional investigation to determine actual con-
tributions from the known point sources upstream and a closer
examination of land use practices are necessary before recom-
mendations on nutrient controllability can be made.
2. Nonpoint sources -
The mean annual phosphorus load not attributable to point
sources within 40 stream km (25 miles) of Lake McMillan was
about 43.8% of the total reaching the lake. The Pecos River
contributed 41.4% of the total load, and ungaged tributaries
contributed an estimated 0.7%.
-------
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.
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. Pre-
cipitation 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: 23.05 km
2. Mean depth: 2.1 meters.
3. Maximum depth: 7.9 meters.
4. Volume: 48.637 x 106 m3.
5. Mean hydraulic retention time: 81 days.
-------
B. Tributary and Outlet:
(See Appendix B for flow data)
1. Tributaries -
Drainage Mean Flow
Name area (km?) (m3/sec)
A-2 Pecos River (Kaiser Channel) 42,597.2 6.69
Minor tributaries and
immediate drainage - 1,383.9 0.26
Total 43,981.1 6.95
2. Outlet - A-l Pecos River 44,004.1 6.94
C. Precipitation:
1. Year of sampling: 26.3 cm.
2. Mean annual: 26.5 cm.
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III. LAKE WATER QUALITY SUMMARY
Lake McMillan 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 col-
lected from three 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 3.0 meters at Station 01, the surface at Station 02, and 1.5
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 maxi-
mum 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.
-------
i. A\.D Cu
TE'-«PE^ATUBE (QEG
C.-1.5 v
DISSOLVED OXYGEN <"r,/L
0.-1.5 M OEPTH
VAX DEPTH»»
CONDUCTIVITY
0.-1.5 M OEfTH
MAX DEPTH**
Ph (STANDARD UNITS)
O.-l.S
MAX DFPTH««
TOTAL ALKALINITY
0.-1.5 M OEPTH
MAX OEPTH««
TOTAL P
0.-1.5 M DEPTH
MAX DEPTH*'
DISSOLVED O^ThO P
4
3
3
3
3
.)
4
3
4
3
'L>
4
3
4
3
4
3
4
3
( 5/ 1/75 )
5««o = 1
15.2- If. 8 1^.7
15.2- 16.3 1ft. 2
8.?- 8.4
3.4- 6.4
7193. -7243.
7167. -7243.
3.3- 8.3
8.3- 8.3
119.- 126.
0. 044-0. 254
0.053-0.254
0.006-0.011
0.009-0.011
0.080-0.110
0.080-0.110
0.050-0.100
0.050-0.080
0.600-1.000
0.600-1 .000
8.4
11%:
8.3
P. 3
12'.
121.
0.050
0.087
0.009
0.095
0.090
0.065
0.060
0.750
0.700
'•'ETE
O.o-
0.0-
ft.O-
0.0-
n.o-
0.0-
n.o-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
0.0-
n.O-
0.0-
0.0-
n.O-
0.0-
-^)
1.5
3.0
1.5
3.0
1.5
3.0
1.5
3.0
1.5
3.0
1.5
3.0
1.5
3.0
1.5
3.0
1.5
3.0
'; v
5
3
5
3
S
3
t;
3
5
3
5
3
5
3
5
3
5
3
5
3
( 8/20/75 )
Sooo = 3
S4NC-6 «EOIAN
?2.3~ 2^.7 23.9
23.4- 85.7 23.9
».9- 6.3
4.9- 6.3
3875. -4312.
3375. -4312.
7.9- 8.1
7.9- 8.1
102.- 104.
102.- 104.
0.053-0.109
0.070-0.109
0.006-0.009
0.006-0.009
0.020-0.020
0.020-0.020
0.020-0.030
0.020-0.030
0.300-0.400
0.300-0.400
6.2
6.2
3988.
3988.
7.9
8.0
103.
103.
0.078
0.108
0.007
0.007
0.020
0.020
0.020
0.020
0.400
0.400
MAX
DEPTH
(METFUS)
0.0- 1.5
0.0- 1.5
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
1.5
1.5
1.5
1.5
l.S
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
NO
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
( 10/ 2/75 )
<;«oo = 3
RANGE MEDIAN
16.9- 1«.5 lfl.1
16. 9- 18.5 17.8
8.3- 9.1
8.3- 9.1
3581. -3875.
3581. -3875.
7.7- 8.1
7.9- 8.1
78.- 87.
78.- 87.
0.117-0.217
0.125-0.217
0.010-0.022
0.010-0.021
0.020-0.020
0.020-0.020
0.020-0.020
0.020-0.020
0.400-0.600
0.400-0.600
8.4
fl.4
3745.
3763.
8.0
8.0
81.
79.
0.134
0.143
0.015
0.010
0.020
0.020
0.020
0.020
0.450
0.500
MAX
DEPTH
RANGE
(METERS)
0.0- 1.5
0.0- 1.5
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
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
0.2- 0.5
0.3
0.3- 0.4
0.4
0.1- 0.1 0.1
N = NO. OF SAMPLES
MAXIMUM DEPTH SAMPLED AT EACH SITE
o s = NO. OF SITES SAMPLED ON THIS DATE
-------
B. Biological Characteristics:
1. Phytoplankton -
Sampling
Date
05/01/75
08/20/75
10/02/75
Dominant
Genera
1.
2.
3.
4.
5.
Achnanthes
Cyclotella
Chlorophytan
lunate cell
Chroomonas ?
Oocystis
Other genera
Algal
Units
per ml
2,733
1,997
1,682
420
315
210
Total
Other genera
Total
7,357
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
Nitzschia
Oscillatoria
Euglena
Cryptomonas
Cyclotella
Other genera
Total
Nitzschia
Oscillatoria
Anabaena
Euglena
Binuclearia
770
147
147
37
37
36
1,174
2,718
614
380
146
146
380
4,384
-------
2. Chlorophyll a_ -
Sampling Station Chlorophyll a_
Date Number (yg/1)
05/01/75 01 11.2
02 8.1
03 13.0
08/20/75 01 12.1
02 10.7
03 16.0
10/02/75 01 18.7
02 18.7
03 18.7
-------
10
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N Maximum Yield
Spike (mq/1) Cone, (mg/1) Cone, (mg/1) (nig/1-dry wt.)
a. 05/01/75
Control <0.005 0.135 0.2
0.05 P <0.055 0.135 5.0
0.05 P + 1.0 N O.055 1.135 14.7
1.00 N <0.005 1.135 0.1
b. 10/02/75
Control 0.020 0.155 3.2
0.05 P 0.070 0.155 7.8
0.05 P + 1.0 N 0.070 1.155 24.5
l.OON 0.020 1.155 3.2
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11
2. Discussion -
The control yields of the assay alga, Selenastrum caprlcor-
nutum, indicate that the potential for primary production in Lake
McMillan was low during the spring sampling (05/01/75) and high
during the fall sampling (10/02/75). In both assays, a significant
increase in growth over that of the control was produced by the
addition of phosphorus alone and in combination with nitrogen,
indicating phosphorus limitation. Spikes of only nitrogen did not
stimulate growth beyond control yields.
The mean inorganic nitrogen to orthophosphorus ratios (N/P)
in the lake data were approximately 17/1, 6/1, and 3/1 in the
spring, summer and fall, respectively, suggesting primary limitation
by phosphorus in the spring and by nitrogen in the summer and fall
(a mean N/P ratio of 14/1 or greater generally reflects phosphorus
limitation).
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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 a number of monthly near-surface grab
samples from each of the tributary sites indicated on the map
(page v). 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
annual concentrations in Unnamed Creek at Station D-l and mean
annual ZZ flow.
Nutrient loads for the city of Artesia wastewater treatment
plant were estimated at 1.134 kg P and 3.401 kg N/capita/year.
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13
A. Waste Sources:
1. Known municipal -
Name
Artesia
Pop.*
Served
12,000
Treatment*
Trickling
Filter
Mean Flow
(m3/d x IP3)
4.542**
Receiving
Water
Irrigation and
Pecos River
2. Known industrial - None
*U.S. EPA, 1971.
**Estimated at 0.3785 nr/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 Pecos River 10,040 41.4
(Kaiser Channel)
b. Minor tributaries and immediate
drainage (nonpoint load) - 180 0.7
c. Known municipal STP's -
Artesia 13,610 56.2
d. Septic tanks - None known
e. Known industrial - None
f. Direct precipitation* - 405 1.7
Total 24,235 100.0?
2. Outputs - A-l Pecos River 16,860
3. Net annual P accumulation - 7,375
*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 Pecos River 356,695 75.7
(Kaiser Channel)
b. Minor tributaries and immediate
drainage (nonpoint load) - 48,540 10.3
c. Known municipal STP's -
Artesia 40,810 8.7
d. Septic tanks - None known
e. Known industrial - None
f. Direct precipitation* - 24,885 5.3
Total 470,930 100.0%
. 2. Outputs - A-l Pecos River 641,260
3. Net annual N export** - 170,330
*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/kiti2/yr kg N/km2/yr
Pecos River (Kaiser Channel) <1 8
E. Mean Nutrient Concentrations in Ungaged Streams:
Mean Total P Mean Total N
Tributary (mg/1) (mg/1)
B-l Overflow Outlet 0.043 1.605
C-l Pecos River (West Channel) 0.230 1.910
D-l Unnamed Creek 0.022 5.920
Phosphorus levels in the Pecos River (West Channel), C-l,
and nitrogen levels in Unnamed Creek, D-l, appear greatly inflated
when compared to the other tributaries to Lake McMillan.
-------
F. 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 Lake McMillan 1.05
Vollenweider's "eutrophic" loading 0.62
Vollenweider's "oligotrophic" loading 0.31
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18
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. U.S. Depart-
ment of Interior, Geological Survey, Washington, D.C.
New Mexico Environmental Improvement Agency. 1974. Draft report
on New Mexico Reservoirs prepared for 314A of the Federal Water
Pollution Control Act. Water Quality Division, Santa Fe, New
Mexico.
U.S. Environmental Protection Agency. 1971. "Inventory of Waste-
water Treatment Facilities", Vol. 4, EPA Publication No. OWP-1,
Office of Media Programs, Office of Water Programs, 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. 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 3.201 = feet
Cubic meters x 8.107 x 1.0 = acre/feet
Square kilometers x 0.3861 = square miles
Cubic meters/sec x 35.31G = cubic feet/sec
Centimeters x 0.3937 = indie!
Kilograms x 2.205 = p&tintls
Kilograms/square kilometer x 5.711 - Ibs/squarc mile
-------
APPENDIX B
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLOW INFORMATION F09
MEKICO
CODE 3507
TOTAL DRAINAGE AREA OF L&KE
-------
TRIBUTARY FLO* INFORMATION FOP NEW MEXICO
12/16/76
LAKE CODE 350?
LAKE MCMILLAN
MEAN MONTHLY FLOWS AND DAILY FLOWS
-------
APPENDIX C
PHYSICAL AND CHEMICAL DATA
-------
STOHET RETRIEVAL DATE 76/12/16
KATL EUTP.OPHICATIGN SURVEY
EP6-LAS VEGAS
350701
33 35 51,0 104 20 47.3 3
LAKE MACMILLAN
350i5 NEW MEXICO
/TYPA/AM3NT/LAKE
DATE TIME DEPT*
FPQw OF
TO
75/05/01
75/08/20
75/10/02
DAY
11
11
11
10
10
10
10
25
25
25
10
10
FEET
0000
0005
0010
0000
0004
00010
WATER
TEMP
CENT
15 0000
15 0005
15.2
15.3
15.2
23.9
23.9
18.5
18.5
00665
DATE
FROM
TO
75/05/01
75/08/20
75/10/02
TIME
OF
DAY
11
11
11
10
10
10
10
25
25
25
10
10
15
15
DEPTH
FEET
0000
0005
0010
0000
0004
0000
0005
PHOS-TOT
MG/L P
0
0
0
0
0
0
0
.044
.048
.087
.058
.070
.117
.125
00300
DO
MG/L
8.
8.
8.
6.
6.
8.
8.
32217
HEPALES 760109 04001002
0015 FEET DEPTH CLASS 00
00077 0009* 00400 00410 00610 00625
TftANSP CNOUCTVY PH T ALK NH3-N TOT KJEL
sECCrtl FIELD CAC03 TOTAL N
INCHES MICHOMHO su
4 20
2
4
3 15
2
4 3
3
00031
7218 8.30
7193 8.30
7167 8.30
4007 7.90
3988 8.10
3727 7.70
3763 8.00
MG/L MG/L
126 0.100
123 0.070
122 0.080
103 0.020K
103 0.020
83 0.020K
79 0.020K
MG/L
0.900
0.600
0.700
0.400
0.400
0.400
0.500
CHLRPMYL INCDT LT
A
IIG/L
11.
12.
18.
RFMNING
PERCENT
2
1
7
00630 00671
N02&N03 PHOS-DIS
N-TOTAL OUTHO
MG/L MG/L P
0.110
0.100
0.110
0.020K
0.020K
0.020K
0.020K
0.009
0.006
0.009
0.007
0.006
0.022
0.021
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
NATL EUTSCPnlCATION SURVEY
EPA-LAS VEGAS
350702
32 37 45.0 104 19 44.0 3
LAKE MACMILLAN
35015 NEh MEXICO
/TYPA/AMBNT/LAKE
DATE
FROM
TO
75/05/01
75/08/20
75/10/02
DATE
FROM
TO
75/05/01
75/08/20
75/10/02
TIME DEPTH
OF
DAY FEET
13 25 0000
10 45 0000
10 00 0000
TIME DEPTH
OF
DAY FEET
13 25 0000
10 45 0000
10 00 0000
00010
*ATER
TEMP
CENT
16.2
25.7
17.8
00665
PHOS-TOT
MG/L P
0.053
0.109
0.143
00300
DO
MG/L
8.4
6.3
8.4
32217
CHLRPHYL
A
UG/L
8.1
10.7
18.7
00077
TRANSP
SECCHI
INCHES
12
12
3
00031
INCDT LT
RFMNING
PERCENT
11EPALES 760109 04001002
0003 FEET DEPTH CLASS 00
7
P
I
S
12
12
3
00094
CNDUCTVY
FIELD
MICROMHO
7222
4312
3875
00400
PH
SU
8.30
8.00
7.95
00410
T ALK
CAC03
MG/L
121
102
87
00610
NH3-N
TOTAL
MG/L
0.060
0.020
0.020K
00625
TOT KJEL
N
MG/L
0.600
0.300
0.400
00630
N02&N03
N-TOTAL
NG/L
0.090
0.020K
0.020K
00671
PHOS-OIS
ORTHO
M6/L P
0.009
0.007
0.010
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STOSET RETRIEVAL DATE 7h/12/lb
NATL EUTROPHICATIGN SURVEY
EPA-L*S VEGAS
350703
32 36 58.0 10* 21 23.0 3
LAKE MACMILLAN
35015 NEW MEXICO
/TYPA/AM6NT/LAKE
11EPALES 760109 0*001002
0003 FEET DEPTH CLASS 00
DATE
FROM
TO
75/05/01
75/08/20
75/10/02
DATE
FROM
TO
75/05/01
75/08/20
75/10/02
TIME DEPTi-
OF
DAY FEET
13 50 0000
10 25 0000
10 25 0005
10 25 0000
TIME DEPTH
OF
DAY FEET
13 50 0000
10 25 0000
10 25 0005
10 25 0000
00010
WATER
TEMP
CENT
16.8
22.3
23.*
16.9
00665
PHOS-TOT
MG/L P
0.25*
0.078
0.108
0.217
00300
00
MG/L
8.*
5.1
*.9
9.1
32217
CHLRPHYL
A
UG/L
13.0
16.0
18.7
00077
T^AMSP
«?ECCHI
INCHES
9
15
3
00031
IMCDT LT
PENNING
PERCENT
0009*
CNDUCTVY
FIELD
MICROMHO
72*3
3900
3875
3581
00*00
PM
SU
8.30
7.90
7.90
8.10
00*10
T ALK
CAC03
MG/L
119
10*
10*
78
00610
NH3-N
TOTAL
MG/L
0.050
0.030
0.030
0.020K
00625
TOT KJtL
N
MG/L
1.000
0.400
O.*00
O.bOO
00630
N02&.N03
N-TOTAL
MG/L
0.080
0.020K
0.020K
0.020K
00671
PHOS-DIS
OHTHO
MG/L P
0.011
0.006
0.009
0.010
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
APPENDIX D
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
STORET RETRIEVAL DATE 76/13/16
MAIL EUTROPHICATION SURVEY
EPA- LAS VEGAS
DATE TIME DEPTH N02S.N03
FROM OF
TO DAY FEET
75/04/13 11 45
75/06/07 15 45
75/07/26 11 35
75/08/25 08 40
75/09/22 16 00
75/10/23 13 00
75/11/11 12 00
3507A1
32 35 42.0 104 20 49.0 4
PECOS RIVER
35 7.5 LK MCMILAN S
0/LAKE MCMILLAN 120891
BNK 100 FT SW DRT RO 4 M MN« FANNING RAN
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
S.N03
OTAL
!G/L
0.115
0.010
0.005
0.005
0.015
0.015
0.010
00625
TOT KJEL
N
MG/L
2.900
1.050
1.700
1.400
1.400
2.200
0.100K
00610
NH3-N
TOTAL
MG/L
0.030
0.090
0.040
0.055
0.070
0.045
00671
PHOS-DIS
ORTHO
MG/L f
0.005K
0.020
0.005K
0.010
0.020
0.020
0.015
00665
PHOS-TOT
MG/L P
0.010
0.120
0.080
0.050
0.120
0.140
0.070
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STORE! RETRIEVAC DATE 76/13/16
NATL EUTROPhlCATIOM SURVEY
EPA- LAS VEGAS
3507A2
32 39 02.0 104 18 43.0 4
KAISEK CHANNEL
35 7.5 LK MCMILAN N
T/LAfE MCMILLAN 130891
8NK * END ORT RO 5.5 MI riSW WILLIAMS
11EPALES 3111304
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
74/12/07
75/01/11
75/02/01
75/03/02
75/04/01
75/07/26
75/08/35
75/09/33
75/10/23
75/11/12
TIME DEPTH
OF
DAY FEET
10 45
12 03
12 40
09 50
11 45
10 50
10 15
10 00
14 50
11 00
00630
N021N03
N-TOTAL
MG/L
0.736
0.497
0.160
0.035
0.005
0.230
0.54Q
0.015
0.690
0.010
00635
TOT KjEL
N
MG/L
1.100
1.350
3.300
1.350
3.300
1.600
0.900
0.700
00610
NM3-N
TOTAL
MG/L
0.130
0.056
0.105
0.065
0.650
0.120
0.060
0.005K
0.050
00671
PHOS-DIS
ORTHO
MG/L P
0.010
0.095
0.080
0.045
0.005K
0.015
0.030
0.005K
0.030
00665
PHOS-TOT
MG/L P
0.100
0.107
0.195
0.160
0.150
0.100
0.050
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STOPET RETRIEVAL DATE 76/13/16
NATL EUTROPHICATION SURVEY
EPA- LAS VEGAS
3S07B1
32 36 20.0 104 21 50.0 4
OVERFLOW OUTLET
35 7.5 LK MCMILAN S
T/LAKE MCMILLAN 120891
8NK 500 FT N OF DRT RO 1 MI NW OF DAM
11EPALES 2111204
0000 FEET DEPTH CLASS 00
DATE TIME DEPTH
FROM OF
TO DAY FEET
74/13/07 09 40
75/01/11 13 15
75/02/01 13 30
75/03/03 09 15
75/07/26 11 45
75/08/25 08 55
75/10/23 14 00
75/11/11 12 20
00630
N02&N03
N-TOTAL
MG/L
0.064
0.172
0.168
0.175
0.015
0.015
0.005
0.005
00625
TOT KJEL
N
MG/L
1.800
1.220
1.500
1.750
1.650
1.150
1.800
1.350
00610
NH3-N
TOTAL
MG/L
0.105
0.128
0.088
0.105
0.040
0.035
0.025
0.040
00671
PHOS-DIS
ORTHO
MG/L P
0.005
0.012
0.020
0.020
0.010
0.010
0.010
0.020
00665
PHOS-TOT
MG/L P
0.010
0.020
0.032
0.020
0.040
0.050
0.050
0.120
-------
STOOET RETRIEVAL DATE 76/12/16
NATL EUTROPHICATION SURVEY
EPA- LAS VEGAS
00630 00625 00610 00671
DATE TIME DEPTH N02&.N03 TOT KJEL NH3-N PHOS-OIS
FROM OF N-TOTAL N TOTAL ORTHO
TO DAY FEET *G/L MG/L MG/L MG/L P
3507C1
32 39 12.0 104 19 55.0 *
JEST CHANNEL
35 7.5 LK MCMILAN N
T/LAKE MCMILLAN 120891
8NK E END DRT PO 3.4 MI NE OF LAKEWOOD
11EPALES 2111204
0000 FEET DEPTH CLASS 00
00665
PHOS-TOT
MG/L P
75/11/12 10 00
0.010
1.900
0.055
0.075
0.230
-------
STORET RETRIEVAL DATE 76/12/ifi
MAIL EUTROPHICATION
EPA- LAS VEGAS
DATE TIME DEPTH N02S.N03
FROM OF
TO DAY FEET
74/12/07
75/01/11
75/02/01
75/03/02
75/04/01
75/07/26
75/08/25
75/09/22
75/10/22
75/11/12
12 05
11 00
11 45
10 50
13 00
09 45
12 50
10 00
15 00
09 00
350701
32 43 45.0 104 IS 12.0 4
UNNAMED CREEK
35 7.5 LK MCHILAN N
T/LAKE MCMILLAN 120891
RD XING .4 HI UPSTRM FRM CON *ITH PEC05
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
S.N03
OTAL
G/L
8.200
8.130
7.920
7.500
6.000
2.400
2.750
2.500
2.500
2.200
00625
TOT KJEL
N
MG/L
0.600
0.460
0.800
0.600
1.690
1.150
0.600
0.700
1.600
0.900
00610
NH3-N
TOTAL
MG/L
0.040
0.040
0.024
0.040
0.055
0.070
0.070
0.065
0.115
0.178
00671
PHOS-DIS
ORTHO
MG/L P
0.008
0.015
0.010
0.005K
0.005K
0.005K
0.005
0.010
0.015
0.005
00665
PHOS-TOT
MG/L P
0.010K
0.040
0.020
0.010
0.012
0.020
0.020
0.040
0.015
0.020
K VALUE KNOWN TO BE LESS
THAN INDICATED
-------
STO-ET = £'-»;
t^a- i «S v E...
/ A*r>'.
33 24 fc5.0 104 ?- bO.n 4
-OS«£LL
3^ 7.6 "G'ss-LL N
IL
TO
00001004
0000 FEET OFi-T-i CLASS 00
OtTE TI»E OEPT- NO?-, *C3 T^>T -
75/01/07
75/0?/0?
r-> ( T) -
75/02/0?
75/03/04
CP(T)-
75/03/04
75/04/01
rp(T) -
75/04/01
75/05/04
CP(T)-
75/05/04
75/U6/03
CP(T)-
75/06/03
75/07/08
CO(T)-
75/07/OR
/5/08/03
C° ( T) -
75/08/03
75/09/02
CP(T)-
75/09/02
75/09/27
CP ( T) -
75/09/27
75/10/01
CP(T>-
75/10/01
OF
DAY
0?
08
00
?4
00
24
00
24
00
24
00
24
00
24
00
?4
00
24
00
24
00
24
00
24
S-T'jTiiL "j TOTAL O^T^O
FFET M(-/L Mb/L >"s/{. W3/L ^
On
n.2^0 19.000 11.000 7.100
00
0 -i
•t.l*>0 32.000 lo.OOQ 7.700
On
On
".160 33.00ii 1».000 f.OOO
On
00
0.0«0 3^.000 16.00Q fl.OOO
00
00
fi.llb 29.000 13.600 4.500
00
00
ii.lOO 31.000 13.500 7.100
00
00
0.050 35.000 17.000 3.9QO
00
00
0.200 30.000 10.500 2.900
00
on
'I.67S HS.OOO 14.500 6.400
00
00
0.200 25.000 11.500 6.400
00
00
00
00
u.4?5 35.000 19.500 5.010
00
RATt FLO*-MGD
MG/L P INST MGO MONTHL*
8.600 4.000 4.300
v.900 4.500 4.300
10.500 3.HOO 4.200
13.800 4.400 4.300
5.150 4.500 4.200
10.500 3.&00 4.500
5.200 4.900 4.500
7.950 4.800 4.500
7.400 4.100 4.800
7.100 5.000 5.100
5.000 5.100
8,300 4.000 4.300
-------
,-CT -i-T-It1-!!. *-'- ?7/ - ' :-
r'_ C'JT- JJ-IC.IT i..' - • - .11
V- i_fi=; s/t.-a*> 33 24 »5.0 114 2S SO.O
-OS.LLL
•*=S 7.5 JOV'fLL N
T/i_£r\c. MCMILLAN
"10 -ONDO TO ^>tCuS
t!TNT/?T-Eiw llt^ALtS 00001004
0000 FEET OEKTsi CLASS 00
•j'1*531 00^?•r 00*! 1-1 00671 OOSbb 500S1 50053
TI-iE OE^r- NoS-.-'.OJ TOT K.J£L '.'-i3-'. P"OS-OIS P-OS-TOT FLO» CONDUIT
Cf \-Tor-L i T'.ITAL OWT"0 rtATE FLOx-MGI)
75/11/04 00 01
CPtT)- !.3in 4.600 IS.onQ 7.400 8.BOO 4.000 4.800
75/11/04 ?4 nr
75/13/0? 00 0"-
CP(T)- '1.300 32.000 ai.0«0 7.800 6.400 ».300 3.700
? 4 fi ,"
-------
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
1n 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
0812 NAVAJO RESERVOIR
3501 ALAMOGORdO
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
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
MEDIAN
DISS ORTHO
0.009
0.003
0.01? '
0.004
0.132
o.ofa
0.014
0,00?
0.004
-------
PERCENT OP LAKES WITH HIGHER VALUES {NUMBER OF LAKES WITH HIGHER VALUES)
LAKE .
CODE LAKE NAME
0812 NAVAJO RESERVOIR
3501 ALAMOGOROO
3503 BLUE WATER LAKE
3503 CONCHAS RESERVOIR
3504 EAGLE NEST LAKE
3505 ELEPHANT BUTTE RESERVOIR
3506 EL VAOO RESERVOIR
3507 LAKE MACMILLAN
3509 UTE RESERVOIR
MEDIAN
TOTAL
63
75
38
100
0
25
50
13
88
(
<
(
(
(
(
(
(
(
P
5)
6)
3)
8)
0)
2)
4)
1)
7)
MEDIAN
I.NOR6
25 (
63 (
6 (
94 (
50 (
38 (
6 (
75 <
94 (
N
2)
5)
0)
7)
4)
3)
0)
6)
7)
500-
. MEAN
100
38
13
75
63
25
50
0
88
SEC
(
(
(
(
(
(
(
(
(
8)
3)
1)
6)
5)
2)
4)
0)
7)
MEAN
CHLORA
100 (
33 (
50 (
63 C
13 (
25 (
88 (
0 (
75 (
15-
8)
3)
4)
5»
1)
2)
7)
0)
6)
MIf*
75
88
63
6
6
25
50
100
38
i 00
< 6)
( 7)
C 5)
( 0)
( 0)
( 2)
( 4)
< 8)
( 3)
MEDIAN
DISS
56
100
38
si
P
13
25
56
81
ORTHO P
(
{
<_^
(
{
(
<
(
(
4> .
6)
3»
6)
0)
1)
2)
4)
6)
------- |