U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
wuB"
AGO
IR
LORADO,
SAN JUAN AND ffiOJRBIBA COUNTIES,
EPA REGIONS VI AND VIII
WORKING PAPER No, 775
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
p/A.in
ARCHULE
SAN JUAN AND RIffMBA COUNTIES,
EPA REGIONS VI AND VI11
WORKING PAPER No, 775
WITH THE COOPERATION OF THE
COLORADO DEPARTMENT OF HEALTH,
THE NEW MEXICO ENVIRONMENTAL IMPROVEMENT AGENCY,
AND THE
COLORADO NATIONAL GUARD
JULY, 1977
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CONTENTS
Page
Foreward ii
List of Colorado Study Lakes and Reservoirs iv
Lake and Drainage Area Map v
Sections
I. Conclusions 1
II. Lake and Drainage Basin Characteristics 4
III. Lake Water Quality Summary 5
IV. Nutrient Loadings 9
V. Literature Reviewed ' 15
VI. Appendices 16
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n
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, concentrations,
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 non-point
source pollution abatement in lake watersheds.
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 water-
shed 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)j, 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.
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m
Beyond the single lake analysis, broader based correlations
between nutrient concentrations (and loading) and trophic condi-
tion are being made to advance the rationale and data base for
refinement of nutrient water quality criteria for the Nation's
fresh water 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 EPA
and to augment plans implementation by the states.
ACKNOWLEDGEMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Colorado Department of
Health and the New Mexico Environmental Improvement Agency for
professional involvement, to the Colorado National Guard for
conducting the tributary sampling, and to those Colorado waste-
water treatment plant operators who voluntarily provided effluent
samples.
The staffs of the Colorado Water Quality Control Division and
the New Mexico Water Quality Division provided invaluable lake
documentation and counsel during the Survey, reviewed the prelimi-
nary report, and provided critiques most useful in the preparation
of this Working Paper.
Lt. Colonel Paul A. Parsons, the Deputy Adjutant General of
Colorado, and Project Officer Colonel Hershel C. Yeargan, who
directed the volunteer efforts of the Colorado National Guardsmen,
are also gratefully acknowledged for their assistance to the Survey.
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iv
NATIONAL EUTROPHICATION SURVEY
STUDY LAKES AND RESERVOIRS
STATE OF COLORADO
NAME
Barker
Barr
Blue Mesa
Cherry Creek
Cucharas
Dillon
Grand
Green Mountatn
Hoi brook
Meredith
Milton
Navajo
Shadow Mountain
COUNTY
Boulder
Adams
Boulder
Arapohoe
Huerfano
Summi t
Grand
Summit
Otero
Crowley
Weld
Archuleta, CO; San
Juan, Rio Arriba, NM
Grand
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NAVAJO RESERVOIR
<•> frihutary Sampling Site
ij Sewage Treatment Facility
f^_»[)r
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NAVAJO RESERVOIR
STORE! NO. 0812
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Navajo Reservoir is mesoeutrophic.
It ranked eighth in overall trophic quality among the 13 Colorado
lakes and reservoirs sampled in 1975 when compared using a com-
bination of six parameters*. Six of the water bodies had less
median total phosphorus, seven had less median dissolved ortho-
phosphorus, ten had less median inorganic nitrogen, none of the
others had less mean chlorophyll a_, and seven had greater mean
Secchi disc transparency. Some depression of dissolved oxygen
with depth occurred at stations 2, 3, and 4 in September.
Survey limnologists did not observe any nuisance concentrations
of algae during sampling visits.
B. Rate-Limiting Nutrient:
The algal assay results are not considered representative of
conditions in the reservoir at the times the samples were collected
(04/30/75 and 09/30/75) due to significant changes in nutrient con-
centrations in the samples during shipment from the field to the
laboratory. The reservoir data indicate phosphorus limitation in
April at stations 1, 3, and 5 and in August at stations 3 and 5.
Nitrogen limitation is indicated at all other sampling stations
and times.
* See Appendix A.
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2
C. Nutrient Controllability:
1. Point sources—During the sampling year, point sources
accounted for 1.6% of the total phosphorus input to Navajo Reser-
voir. The wastewater treatment plants at Ignacio and Bayfield
contributed 0.3% and 0.2% of the total, respectively. The muni-
cipal facility at Pagosa Springs was estimated to have contributed
the remaining 1.1%.
The present phosphorus loading of 2.50 g/m2/year is 2.6 times
that proposed by Vollenweider (Vollenweider and Dillon, 1974)
as a eutrophic loading (see page 14). A 62% reduction of phos-
phorus inputs would be necessary to lower the loading to less
than a eutrophic loading. This would require control of phos-
phorus from non-point sources in the drainage basin in addition
to point-source control.
2. Non-point sources--Non-point sources contributed 98.4%
of the total phosphorus load during the sampling year. The San
Juan River contributed 34.0%, the Piedra River contributed 36.1%,
and six other gaged tributaries collectively contributed 7.9%. The
ungaged minor tributaries and immediate drainage contributed an
estimated 19.8%.
The phosphorus export rates of the San Juan River, Piedra
River, Spring Creek, and Unnamed Creeks D-l and F-l were signifi-
cantly higher than the rates of the other tributaries in the
drainage basin (see page 13). In a previous report, it is
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3
noted that part of the flow in Spring Creek is due to irrigation
return flows, and that water is diverted from the San Juan,
Piedra, and Los Pinos rivers for the irrigation of approximately
189 km2 (Anonymous, 1975). It is likely that irrigation return
flows contribute to the excessive phosphorus loading of Navajo
Reservoir. An additional investigation is needed to determine
the contribution and controllability of non-point-source nutrients.
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II,
RESERVOIR AND DRAINAGE BASIN CHARACTERISTICS
A. Morphometry :
1. Surface area: 63.25 kilometers2.
2. Mean depth: 33.3 meters.
3. Maximum depth: 39.6 meters.
4. Volume: 2,108.034 x Itf m3.
5. Mean hydraulic retention time
t
Tributary and Outlet:
(See Appendix C for flow data)
1. Tributaries -
Name
San Juan River
Piedra River
Sambrito Creek
Unnamed Stream D-l
Los Pinos River
Unnamed Stream F-l
Unnamed Stream G-l
Unnamed Stream H-l
Unnamed Stream 0-1
Spring Creek
Minor tributaries &
immediate drainage -
Totals
2.
1.4 years.
Drainage
area (km2)*
3,185.7
1,629.1
46.6
20.7
1,320.9
18.6
11.4
17.4
23.3
150.2
1,956.3
8,380.2
Mean flow
(m3/sec)*
17.440
14.720
0.064
0.010
5.620
0.052
0.028
0.040
0.092
0.336
11.058
49.460'
Outlet -
San Juan River
Precipitation****:
1. Year of sampling: 54.0 centimeters.
2. Mean annual: 47.2 centimeters.
8,443.4***
49.460
t Table of metric conversions—Appendix B.
tt Anderson, 1974.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Sum of inflows adjusted to equal outflow.
*** Includes area of reservoir.
**** See Working Paper No. 175.
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5
III. WATER QUALITY SUMMARY
Navajo 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 a number of depths at five stations on the reservoir in April
and seven stations in August and September (see map, page v). During
each visit, a single depth-integrated (4.6 m to surface) sample
was composited from the stations for phytoplankton identification
and enumeration; and during the first visit, a single 18.9-liter
depth-integrated sample was composited for algal assays. Also each
time, a depth-integrated sample was collected from each of the stations
for chlorophyll a_ analysis. The maximum depths sampled were 64.0
meters at station 1, 22.9 meters at station 2, 64.0 meters at station
3, 53.3 meters at station 4, 67.1 meters at station 5, 10.7 meters
at station 6, and 32.0 meters at station 7.
The sampling results are presented in full in Appendix D and
are summarized in the following table.
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TEMP
OISS GXY (MG/L)
CNDCTVY (MCROMO)
PH (STAND UNITS)
TOT ALK (MG/L)
TOT P (MG/L)
09THO P (MG/L)
N02»N03 (MG/L)
AMMONIA (MG/L)
KJEL N (MG/L)
iNOftG N (MG/L)
TOTAL N
CHLSPYL A (UO/D
5ECCHI (METERS)
A. SUMMARY Oh PHYSICAL
1ST SAMPLING ( 4/30/75)
5 SITES
RANGE MEAN' MEDIAN
4.3 - 8.5 6.3 6.4
8.0 - 9.4 9.1 9.2
169. - 307. 209. 191.
7.7 - 8.2 8.1 8.1
76. - 94. 89. 88.
0.01* - 0.144 0.039 0.028
0.007 - 0.020 0.011 0.010
0.100 - 0.160 0.124 0.120
0.020 - 0.064 0.029 0.030
0.200 - 0.500 0.291 0.300
0.130 - 0.210 0.153 0.140
0.310 - 0.660 0.415 0.410
0.5 - 9.0 2.3 0.6
0.2 - 0.9 0.5 0.4
C-iA^ACTES I ST ICS FOK i\Av'AJG
STORCT CODE 0812
2ND SAMPLING ( 3/18/75)
7 SITES
•^ANGE MEAN MEDIAN
4.2 - 21.1 14.5 17.2
3.8 - 7.4 6.2 6.4
96. - 227. 176. 186.
7.4 - 8.6 7.9 7.9
49. - 93. 71. 70.
0.012 - 0.084 0.032 0.028
0.002 - 0.040 0.011 0.010
0.020 - 0.560 0.081 0.040
0.020 - 0.030 0.020 0.020
0.200 - 0.500 0.249 0.200
0.040 - 0.580 0.101 0.060
0.220 - 0.760 0.330 0.280
1.4 - 1.9 1.6 1.5
0.2 - 4.6 2.6 2.4
3RU SAMPLING ( 9/30/75)
7 SITES
RANGE MEAN MEDIAN'
9.7 - 19.0 16.4 18.1
4.8 - 6.6 6.6 6.7
94. - 163. 158. lf>2.
7.6 - 8.1 7.9 7.9
53. - 107. 76. 73.
0.010 - 0.043 0.025 0.024
0.003 - 0.025 0.012 0.010
0.020 - 0.220 0.076 0.040
0.020 - 0.030 0.020 0.020
0.200 - 0.400 0.250 0.200
0.040 - 0.240 0.097 0.065
0.220 - 0.580 0.326 0.305
1.5 - 5.9 2.7 1.6
0.3 - 3.0 1.4 1.5
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B. Biological Characteristics:
1. Phytoplankton* -
Sampling
Date
08/18/77
09/30/75
2. Chlorophyll a^ -
Sampl i ng
Date
04/30/75
08/18/75
09/30/75
Domi nant
Genera
1. Cryptomonas sp.
2. Apham'zomenon sp.
Total
1. Chroomonas (?) sp.
2. Cryptomonas sp.
Total
Station
Number
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
Algal Units
per ml
253
63
316
605
287
892
Chlorophyll
(yg/1)
0.6
0.7
0.5
0.5
9.0
1.5
1.4
1.9
1.6
1.7
1.4
1.5
1.6
1.5
2.2
1.5
1.5
5.9
4.7
* The April phytoplankton sample was lost in shipment.
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8
C. Limiting Nutrient Study:
The algal assay results are not considered representative of
conditions in the reservoir at the times the samples were col-
lected (04/30/75 and 09/30/75) due to significant changes in
nutrient concentrations in the samples during shipment from the
field to the laboratory.
The reservoir data indicate a combination of limiting nutrients.
Following is a tabulation of the mean inorganic nitrogen/ortho-
phosphorus ratios at each of the sampling stations and times
with the indicated limiting nutrient in parentheses.
Station 04/30/75 08/18/75 09/30/75
1
2
3
4
5
6
7
18/1 (P)
11/1 (N)
15/1 (P)
13/1 (N-?)
17/1 (P)
13/1 (N-?)
4/1 (N)
18/1 (P)
8/1 (N)
15/1 (P)
3/1 (N)
8/1 (N)
10/1 (N)
6/1 (N)
9/1 (N)
7/1 (N)
10/1 (N)
5/1 (N)
7/1 (N)
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IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Colorado National
Guard collected monthly near-surface grab samples from each of the
tributary sites indicated on the map (page v), except for the months
of May and July when two or three samples were collected. Sampling was
begun in September, 1974, and was completed in August, 1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Colorado District Office of the U.S. Geological Survey for the
tributary sites nearest the reservoir.
In this report, nutrient loads for sampled tributaries were
determined by using a modification of a U.S. Geological Survey computer
program for calculating stream loadings*. Nutrient loads shown are
those measured minus point-source loads, if any.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the means of the
nutrient loads, in kg/km2/year, at stations D-l and K-l and multiplying
the means by the ZZ area in km2. No nutrient samples were collected
on Unnamed Streams G-l (Gomez Canyon) and J-l (Burns Canyon), and
nutrient loads for these tributaries are included in the estimate of
minor tributary loadings.
The operators of the Bayfield and Ignacio wastewater treatment
plants provided monthly effluent samples and corresponding flow data.
* See Working Paper No. 175.
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10
The operator of Pagosa Springs wastewater treatment plant did not
participate; nutrient loads from this source were estimated at 1.134
kg P and 3.401 kg N/capita/year, and flows were estimated at 0.3785
m3/capita/day.
A. Waste Sources:
1. Known municipal* -
Name
Bayfield
Ignacio
Pagosa Springs 1,500
2. Known industrial - None
Pop.
Served
390
350
1,500
Treatment
stab, pond
stab, pond
stab, pond
Mean Flow
(m3/d)
488.3
450.6
567.8
Receiving
Water
Los Pinos River
Pine River
San Juan River
* Treatment plant questionnaires; Anonymous, 1971.
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11
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source yr total
a. Tributaries (non-point load) -
San Juan River. 53,690 34.0
Piedra River 57,015 36.1
Sambrito Creek 265 0.2
Unnamed Stream D-l 375 0.2
Los Pinos River 9,055 5.7
Unnamed Stream F-l 575 0.4
Unnamed Stream H-l 20 <0.1
Spring Creek 2,170 1.4
b. Minor tributaries & immediate
drainage (non-point load) - 31,300 19.8
c. Known municipal STP's -
Bayfield 330 0.2
Ignacio 480 0.3
Pagosa Springs 1,700 1.1
d. Septic tanks* - 10 <0.1
e. Known industrial - None
f. Direct precipitation** - 1,105 0.7
Total 158,090 100.0
2. Outputs -
Reservoir outlet - San Juan
River 27,970
3. Net annual P accumulation - 130,120 kg.
* Estimate based on 34 shoreline dwellings; see Working Paper No. 175.
** See Working Paper No. 175.
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12
Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yr total
a. Tributaries (non-point load) -
San Juan River 645,120 36.3
Piedra River 478,760 26.9
Sambrito Creek 3,050 0.2
Unnamed Stream D-l 5,655 0.3
Los Pinos River 167,355 9.4
Unnamed Stream F-l 2,130 0.1
Unnamed Stream H-l 1,215 0.1
Spring Creek 17,355 1.0
b. Minor tributaries & immediate
drainage (non-point load) - 380,500 21.4
c. Known municipal STP's -
Bayfield 840 <0.1
Ignacio 1,265 0.1
Pagosa Springs 5,100 0.3
d. Septic tanks* - 360 <0.1
e. Known industrial - None
f. Direct precipitation** - 68.285 3.8
Total 1,776,990 100.0
2. Outputs -
Reservoir outlet - San Juan
River 1,403,140
3. Net annual N accumulation - 373,850 kg.
* Estimate based on 34 shoreline dwellings; see Working Paper No. 175.
** See Working Paper No. 175.
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13
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
San Juan River 17 203
Piedra River 35 294
Sambrito Creek 6 65
Unnamed Stream D-l 18 273
Los Pinos River 7 127
Unnamed Stream F-l 31 115
Unnamed Stream H-l 1 70
Spring Creek 14 116
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14
IE. Yearly Loads:
In the following table, the existing phosphorus loadings
are compared to those proposed by Vollenweider (Vollenweider
and Dillon, 1974). Essentially, his "dangerous" loading is
one at which the receiving water would become eutrophic or
remain eutrophic; his "permissible" loading is that which
would result in the receiving water remaining oligotrophic
or becoming oligotrophic if morphometry permitted. A meso-
trophic loading would be considered one between "dangerous"
and "permissible".
Note that Vollenweider's model may not be applicable to
water bodies with short hydraulic retention times.
Total Phosphorus Total Nitrogen
Total Accumulated Total Accumulated
grams/mVyr 2.50 2.06 28.1 5.9
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Navajo Reservoir:
"Dangerous" (eutrophic loading) 0.96
"Permissible" (oligotrophic loading) 0.48
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15
V. LITERATURE REVIEWED
Anderson, R. Dennis, 1974. Personal communication (waterbody
information and morphometry). CO Dept. of Health, Denver.
Anonymous, 1971. Inventory of municipal waste facilities. EPA
Publ. OWP-1, vol. 8, Wash., DC.
Anonymous, 1975. Water resources data for Colorado. Part 1:
Surface water records. U.S. Geol. Surv., Lakewood.
Vollenweider, R. A., and P. J. Dillon, 1974. The application of
the phosphorus loading concept to eutrophication research.
Natl. Res. Council of Canada Publ. No. 13690, Canada Centre
for Inland Waters, Burlington, Ontario.
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16
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
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j.'TA T0 BF JS^O
N4M£
LAKE
COOE
0801
OwO? BA^ LAKE
oiOj BLUE MESA ^E
080<* CHERRY CREEK LAKE
0805 C'JCHARftS
OBOfc DILLON
0807 GKANO LAKE
0808 GREEN MOUNTAIN RESERVOIR
0809 HOLBSOOK LAKE
0810 LAKE MEREDITH
0811 MILTON RESERVOIR
0812 NAYAJO RESERVOIK
0313 SHADOW MOUNTAIN LAKE
MEDIAN
TOTAL P
0.023
0.930
0.019
0.054
0.263
0.009
0.013
0.010
0.329
0.397
0.846
0.036
0.020
MEDIAN
INQSG N
0.045
1.09C
0,0*0
0.040
0.040
0.040
0.040
0.040
0.070
0.110
2.280
0.050
0.040
SCO-
MEAN 5tC
419.000
"51.333
395.750
469.333
490.000
181.750
366.500
391.167
490.333
489.667
429.333
479.400
427.000
MEAN
C^LOPA
5.333
2^.767
6.817
23.322
27.400
3.150
4.900
5.833
111.933
164.678
5.900
2.180
5.700
15-
MlN 00
9.4CO
10.200
13.800
10.000
14.800
9.200
10.200
9.100
9.000
10.400
9.200
10.000
9.200
MEDI
DISS OrJTi
0.006
0.730
0.005
0.007
0.015
0.002
0.003
0.002
0.02«
0.098
0.808
0.013
0.003
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I 4VOIrt
0806 OILLON RESERVOIR
0807 GRAND LAKE
0808 GREEN MOUNTAIN RESERVOIR
0809 HOLdROOK LAr,E
0810 LAKE MEREDITH
0811 MILTON RESERVOIR
0812 NAVAJO RESERVOIR
0813 SHADOW MOUNTAIN LAr<*E
ME.U IAN-
TOTAL P
56 (
0 (
75 (
42 (
33 (
100 (
83 (
92 (
?5 (
17 (
8 (
50 (
67 (
7)
0)
9)
S)
4)
12)
10)
11)
3)
2)
1)
6)
8)
MEDIAN
INORG N
"2 <
e (
87 (
87 (
b8 (
b* <
87 (
58 (
25 (
17 (
0 (
33 (
87 (
5)
1)
91
9)
6>
6)
9)
6)
3)
2)
0)
4)
9)
500-
MEAN SEC
67 (
<-2 (
75 i
33 (
8 (
100 (
92 (
83 (
0 (
17 (
50 (
25 (
58 <
8)
5)
vi
4)
1)
12)
11)
10)
0)
2)
6)
3)
7)
MEAN
CrtLORA
75 1
i? (
"C (
33 (
25 (
92 (
83 (
58 (
3 (
0 (
50 (
100 (
67 <
9)
2)
5 )
4)
3)
11)
10)
7)
1)
0)
6)
12)
8)
15-
MI\ 00
58 (
29 (
8 i
46 (
0 (
75 (
29 (
92 (
100 (
17 (
75 (
46 (
75 (
7i
3)
t I
A '
5)
0)
8)
3)
ID
12)
2)
8)
5)
8)
MEDIAN
DISS CKTriO °
58 (
5 !
i. 7 t
w • '
50 (
33 (
96 (
79 (
96 (
25 (
17 (
0 (
42 (
79 (
7)
11
6)
6>
4)
11)
9)
11)
3)
2)
0)
5)
9)
IN'Jt*
NO
3SS
104
35-
291
157
521
45J
479
183
85
143
296
433
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LA
-------
APPENDIX B
CONVERSION FACTORS
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CONVERSION FACTORS
Hectares x 2.471 * acres
Kilometers x 0,6214 • miles
Miters x 3,281 « feet
•A
Cubic meters x 8,107 x 10 • cere/feet
Square kilometers x 0,3861 B square miles
Cubic meters/sec x 35,315'* cubic feet/sec
Centimeters x 0,3937 • Inches
4
Kilograms x 2,205 * pounds
Kilograms/square kilometer x 5,711 » Ibs/square mile
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APPENDIX C
TRIBUTARY FLOW DATA
-------
TRIBUTARY FLO* INFORMATION FO* COLORADO
09/24/76
LA
-------
TRIBUTARY FLO* INFORMATION FOR COLORADO
09/24/76
LAKE CODE 0812
NAVAJO RESERVOIR
MONTHLY FLO«S AND OAILY FLO*SICMS>
TRIBUTARY
MEAN FLO* DAY
FLOW DAY
FLO* DAH
FLO*
0812C1
031201
0812E1
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
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
74
7<»
74
74
75
75
75
75
75
75
75
75
74
74
7<*
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
1.359
2.407
2.803
1.331
4.332
3.625
5.239
30.865
61. 164
59.749
31.999
4.446
0.037
0.031
0.009
0.001
0.007
0.012
0.027
0.085
0.085
0.139
0.793
0.093
0.002
0.006
0.001
0.0
0.000
O.OC1
0.005
0.011
O.OC6
0.008
0.173
0.023
3.710
3.483
2.2C9
1.444
5.069
4.332
10. 166
19.709
20.756
42.475
28.543
6.2C1
28
28
21
23
23
27
28
5
11
7
28
26
28
21
23
27
28
5
11
7
28
28
28
21
27
28
5
11
7
28
28
28
21
23
27
28
5
11
7
28
1.671
3.909
2.265
1.331
6.909
2.152
5.182
66.545 21
46.440
54.368 23
2.832
0.045
0.051
0.008
0.001
0.037
0.026
0.093 21
0.108
1.359 23
0.059
0.003
0.010
0.001
O.OCl
0.481
0.006 21
0.006
0.283 23
0.014
3.9C3
7.646
1.926
1.529
3.341
15.546
32.281 21
26.193
42.192 23
6.541
70.226
14.158 31
0.096
0.340 31
0.007
0.076 31
20.048
19.114 31
6.269
0.204
0.045
8.014
-------
TRIBUTARY FLO<* INFORMATION FOK COLORADO
LAKE CODE 031?
MAVAJO RESERVOIK
0612F1
OS12G1
Oal2dl
0812J1
••'ONTriLY FLOaS AND DAILY FLO»SlCMS)
MEAN FLO*) DAY
ONT-i
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
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
YtA4
74
7n
74
74
75
75
75
75
75
75
75
75
7*
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
0.01C
0.019
0.007
O.OC1
O.OC4
0.010
0.023
O.OB5
0.110
C.I 25
0.510
0.005
0.006
0.011
0.004
0.000
0.002
0.005
0.014
0.045
0.051
0.059
0.340
0.028
0.012
0.016
0.006
0.001
0.004
0.007
0.020
0.062
0.074
0.076
0.425
0.045
0.018
0.02S
0.014
C.003
0.018
0.019
0.051
0.178
0.224
0.275
0.623
0.065
28
28
21
23
28
5
7
26
28
28
21
23
27
28
5
11
7
26
fLO« DAY
0.0
0.031
0.0
0.0
FLU* DAY
FLOW
0.028
0.119
0.0
0.0
0.0
0.026
0.0
0.0
0.0
0.019
21
31
0.127
0.0
21
0.079
0.059
0.708 23
0.028
0.085
0.187 31
0.110
-------
FLO* INFORMATION FOR COLORADO
CODE 0612
MEAN MONTHLY FLOnS AND UAlLY
TRIBUTARY MQNT1 fEAR MEAN FLO* DAY
0812ZZ
q
10
11
1?
1
?
3
u
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
74
7<.
74
74
75
75
75
75
75
75
75
75
74
74
74
74
75
75
75
75
75
75
75
75
1.133
J.566
0.170
0.113
1.388
2.719
2.180
0.736
1.27<*
1.841
1.926
1.954
1.756
3.087
2.407
0.934
3.087
3.087
4.474
11.978
50.404
45.590
33.980
5.239
28
28
21
23
27
28
5
11
7
28
KLOW DAY
0.680
0.3^0
0.144
0.099
2.577
0.425
FLOW DAY
FLOW
21
0.963
1.982
1.784 23
2.180
1.501
1.869
31
1.642
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORET RETRIEVAL DATE 76/09/24
081201
36 47 59.0 107 36 18.0
NAVAJO RESERVOIR
35045 COLORADO
11EPALES 760114 2111302
0999 FEET DEPTH CLASS 00
DATE
FROM
TO
75/04/30
75/08/18
75/09/30
TIME
OF
DAY
10 50
10 50
10 50
10 50
10 50
10 50
10 50
17 15
17 15
17 15
17 15
17 15
17 10
17 10
17 10
17 10
17 10
17 10
17 10
17 10
DEPTH
FEET
0000
0005
0015
0035
0065
0115
0165
0000
0005
0030
0050
0071
0000
0005
0018
0045
0090
0140
0180
0210
00010
WATER
TEMP
CENT
6.1
6.0
5.8
5.8
5.7
4.9
4.3
20.7
20.8
17.5
13.2
10.7
18.4
18.4
18.4
18.1
14.3
12.4
11.1
9.7
00300
DO
MG/L
9.4
9.2
9.2
9.2
9.2
9.4
8.8
6.8
6.6
5.2
5.8
6.6
7.0
6.4
6.8
5.4
6.4
7.2
7.0
6.8
00077
TRANSP
SECCHI
INCHES
30
180
120
00094
CNDUCTVY
FIELD
MICROMHO
191
181
182
183
183
180
182
209
207
176
208
205
164
166
161
157
149
169
172
180
00400
PH
SU
8.10
8.10
8.10
8.00
8.00
8.00
8.05
8.65
8.50
8.10
7.90
7.90
8.15
8.10
8.05
7.90
7.85
7.80
7.80
7.80
00410
T ALK
CAC03
MG/L
92
91
91
91
91
91
88
74
72
70
78
79
70
69
70
70
71
81
88
91
00610
NH3-N
TOTAL
MG/L
0.020
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.300
0.300
0.200
0.200K
0.200K
0.200K
0.300
0.200K
0.200K
0.200K
0.200K
0.200
0.400
0.400
0.400
0.400
0.400
0.400
0.400
0.400
00630
N02&N03
N-TOTAL
MG/L
0.130
0.120
0.120
0.120
0.120
0.120
0.130
0.020K
0.020K
0.020
0.060
0.110
0.020K
0.020K
0.020K
0.100
0.120
0.150
0.160
0.180
00671
PHOS-OIS
ORTHO
MG/L P
0.011
0.009
0.009
0.008
0.009
0.008
0.009
0.003
0.004
0.002
0.002K
0.013
0.005
0.004
0.003
0.007
0.017
0.019
0.021
0.017
K VALUE KNOWN TO 8E
LESS THAN INDICATED
-------
STO*ET RETRIEVAL OATE 76/09/24
081201
36 47 59.0 107 36 18.0 3
NAVAJO RESERVOIR
35045 COLORADO
11EPALES 7601K 2111202
0999 rrcr OEPTr CLASS 00
OATE
FROM
TO
75/04/30
75/08/18
75/09/30
00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL INCOT LT
OF A REMNING
OAY FEET
10
10
10
10
10
10
10
17
17
17
17
17
17
17
17
17
17
17
17
17
50
50
50
50
50
50
50
15
15
15
15
15
10
10
10
10
10
10
10
10
0000
0005
0015
0035
0065
0115
0165
0000
0005
0030
0050
0071
0000
0005
0018
0045
0090
0140
0180
0210
MG/L P
0,
0,
0
0,
0,
0,
0,
0,
0.
0.
0,
0,
0,
0,
0.
0,
0,
0,
O,
0,
.027
.027
.027
.025
.025
.023
.02^
.022
.024
.020
.021
.019
.013
.012
.010
.018
.028
.030
.028
.027
UG/L PERCENT
0.6
1.5
1.6
-------
ET RETRIEVAL DATE 7&/09/24
081202
37 00 07.0 107 24 44.0 3
NAVAJO RESERVOIR
08007 COLORADO
11EP4LES 760114 2111202
0056 FEET DEPTH CLASS 00
DATE
FROM
TO
75/04/30
75/08/18
75/09/30
TIME
OF
DAY
14 30
14 30
14 30
14 30
14 30
12 50
12 50
12 50
12 50
12 50
12 50
16 00
16 00
16 00
16 CO
16 00
DEPTH
FEET
0000
0005
0015
0035
0052
0000
0005
0015
0030
0050
0067
0000
0005
0015
0045
0075
00010
WATER
TEMP
CENT
8.5
8.3
7.6
7.6
7.4
18.3
18.3
17.8
17.2
12.6
10.2
18.4
18.4
17.9
17.8
15.4
00300
DO
MG/L
9.0
6.0
9.2
9.2
8.2
6.4
7.0
6.6
5.6
5.0
5.6
7.6
6.8
7.0
6.2
5.2
00077
TRANSP
StCCHl
INCHES
10
48
24
00094
CNDUCTVY
FIELD
MICROMHO
209
202
196
195
208
162
166
164
166
123
100
161
15S
153
156
105
00400
PH
su
8.15
8.20
8.10
8.10
8.10
7.90
7.95
7.90
7.70
7.60
7.80
8.10
8.10
8.10
7.95
7.80
00410
T ALK
CAC03
MG/L
89
87
87
86
84
71
71
68
69
63
69
71
69
69
61
53
00610
NH3-N
TOTAL
M6/L
0.050
0.040
0.040
0.040
0.040
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.500
0.400
0.400
0.400
0.400
0.500
0.400
0.400
0.400
0.500
0.500
0.200K
0.200
0.200
0.200K
0.200K
00630
N02&N03
N-TOTAL
MG/L
0.120
0.120
0.120
0.120
0.130
0.020K
0.020K
0.020K
0.030
0.080
0.020
0.020K
0.020K
0.020K
0.090
0.110
00671
PHOS-DIS
ORTnO
MG/L P
0.014
0.014
0.014
0.016
0.017
0.008
0.007
0.007
0.013
0.040
0.006
0.009
0.005
0.005
0.018
0.023
DATE
FROM
TO
75/04/30
75/08/18
75/09/30
TIME DEPTH
OF
DAY FEET
14 30 0000
14 30 0005
14 30 0015
14 30 0035
14 30 0052
12 50 0000
12 50 0005
12 50 0015
12 50 0030
12 50 0050
12 50 0067
16 00 0000
16 00 0005
16 00 0015
16 00 0045
16 00 0075
00665
PHOS-TOT
MG/L P
0.064
C.066
0.064
0.067
0.057
0.020
0.020
0.019
0.026
0.043
C.042
0.020
0.022
0.018
0.039
0.040
32217 00031
CHLRPriYL INCDT LT
A REMNING
UG>L PERCENT
0.7
1.4
1.5
K VALUE KNOWN TO-BE
-------
STURET RETRIEVAL DATF 76/09/24
081303
36 50 53.0 107 36 14.0 3
NAVAJO RESERVOIR
35045 COLORADO
11EPALES 760114 2111202
5999 f£py n£pT« CLASS OQ
DATE
TO
75/04/30
75/08/15
75/09/30
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
11
1
1
1
1
1
1
15
15
15
15
15
15
15
14
14
14
14
14
14
14
14
40
40
40
40
40
40
40
45
45
45
45
45
45
45
25
25
25
?5
25
25
25
25
0000
0005
0015
0035
0085
0125
0165
0000
0005
0027
0060
0100
0150
0180
0000
0005
0015
0040
0080
0120
0160
0210
CENT
7.2
6.5
6.3
5.5
5.1
4.9
4.7
20.8
20.6
18.8
11.6
8.4
6.4
5.7
19.0
18.8
18.6
18.3
14.9
13.2
12.2
9.7
00300
00
MG/L
9.0
9.0
8.8
9.2
9.2
9.0
9.4
7.0
5.6
6.0
6.8
7.0
7.2
7.0
7.0
6.2
5.6
6.0
6.4
6.4
4.8
00077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MICROMriO
9 175
169
172
180
185
187
185
180 208
205
190
175
191
208
205
72 177
173
171
168
153
171
179
183
00400
PH
SU
8.10
8.15
8.15
8.10
8.10
8.10
8.10
8.30
8.35
8.10
7.90
7.75
7.65
7.65
8.10
8.10
8.00
7.80
7.80
7.80
7.70
7.60
00410
T ALK
CAC03
MG/L
87
89
88
92
93
94
93
68
68
72
69
80
90
91
87
87
89
82
87
92
99
107
00610
NH3-N
TOTAL
MG/L
0.030
0.030
0.020
0.020K
0.020K
0.020
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.300
0.200
0.200
0.200
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
00630
N02&N03
N-TOTAL
MG/L
0.150
0.150
0.140
0.120
0.120
0.120
0.120
0.020K
0.020K
0.020K
0.070
0.130
0.560
0.160
0.020K
0.020K
0.020K
0.060
0.120
0.140
0.180
0.220
00671
PHOS-OIS
OftTHO
MG/L P
0.015
0.012
0.010
0.009
0.008
0.009
0.009
0.003
0.003
0.003
0.010
0.015
0.014
0.013
0.003
0.003
0.006
0.016
0.019
0.018
0.017
0.013
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
RETRIEVAL DATE 76/09/2'.
081203
36 50 53.0 107 36 14.0 3
NAVAJO RESERVOIR
35045 COLORADO
11EPALES 760114 2111202
0999 FEET DEPTH CLASS 00
DATE
FROM
TO
75/04/30
75/08/15
75/09/30
00665 32217 00031
TIME DEPTH PHOS-TOT CHLPPHYL INCOT LT
OF A REMNING
DAY FEET MG/L P
11 40
11 40
11 40
11 40
11 40
11 40
11 40
15 45
15 45
15 45
15 45
15 45
15 45
15 45
14 ?5
14 25
14 ?5
14 25
14 25
14 25
14 25
14 25
0000
0005
0015
0035
0085
0125
0165
0000
0005
0027
0060
0100
0150
0180
0000
0005
0015
0040
0080
0120
0160
0210
0.056
0.053
0.042
0.022
0.019
C.021
0.021
o.oia
0.020
0.028
0.029
0.035
0.030
0.034
0.016
0.013
0.016
0.022
0.024
0.027
0.026
0.029
JG/L PERCENT
0.5
1.9
2.2
-------
STDRET RETRIEVAL DATE 76/09/24
081204
36 54 47.0 107 26 48.0
NAVAJO RESERVOIR
35045 COLORADO
11EPALES 760114 2111202
0150 FEET D£pTh CLASS 00
DATE
FROM
TO
75/04/30
75/08/18
75/09/30
TIME
OF
OAf
15 10
15 10
15 10
15 10
15 10
15 10
15 10
13 20
13 20
13 20
13 20
13 20
13 20
13 20
13 20
16 15
16 15
16 15
16 15
16 15
16 15
16 15
DEPTH
FEET
0000
0005
0015
0030
0065
0115
0145
0000
0005
0020
0045
0080
0110
0140
0175
0000
0005
0015
0050
0090
0120
0155
00010
WATER
TEMP
CENT
7.1
7.1
6.9
6.6
6.5
6.6
6.5
20.7
19.9
18.9
12.3
9.3
7.3
6.6
5.5
18.3
18.3
18.2
18.0
14.0
12.7
11.9
00300
DO
MG/L
9.2
9.0
9.0
9.2
9.4
9.2
9.4
6.8
6.8
6.4
5.6
6.6
6.6
5.8
5.4
B.4
6.8
6.8
6.2
5.8
5.4
5.0
00077 00094
TRflNSP CNDUCTVY
SECCHI FIELD
INCHES MICROMHO
14 289
286
280
280
307
297
270
84 185
118
163
143
96
123
161
212
36 158
155
154
152
94
170
141
00400
PH
SU
8.20
8.20
8.20
8.20
8.20
8.20
8.20
8.20
8.10
7.80
7.50
7.45
7.50
7.60
7.60
8.00
8.00
8.00
7.80
7.75
7.70
7.70
00410 .
T ALK
CAC03
MG/L
87
89
88
88
88
86
76
59
61
59
60
49
63
74
88
70
71
70
54
61
72
74
00610
NH3-N
TOTAL
MG/L
0.030
0.030
0.030
0.030
0.030
0.040
0.050
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.400
0.300
0.300
0.200
0.200
0.400
0.500
0.200
0.200
0.200
0.200
0.200K
0.300
0.300
0.300
0.200
0.200
0.200
0.200K
0.200
0.200
0.200
00630
N02&N03
N-TOTAL
MG/L
0.110
0.100
0.110
0.110
0.110
0.130
0.160
0.020K
0.020K
0.020K
0.080
0.080
0.130
0.170
0.200
0.020K
0.020K
0.020K
0.100
0.140
0.170
0.170
00671
PHOS-OIS
ORTHO
MG/L P
0.010
0.010
0.009
0.010
0.010
0.015
0.020
0.003
0.002
0.005
0.012
0.019
0.020
0.022
0.024
0.005
0.004
0.004
0.023
0.023
0.024
0.025
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STDRET RETRIEVAL DATE 76/09/24
08120*
36 54 47.0 107 26 48.0 3
NAVAJO RESERVOIR
350-»5 COLORADO
11EPALES 760114 2111202
0150 FEET DEPTH CLASS 00
DATE
FROM
TO
75/04/30
75/08/18
75/09/30
00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL INCDT LT
OF A REMNING
DAY FEET
15
15
15
15
15
15
15
13
13
13
13
13
13
13
13
16
16
16
16
16
16
16
10
10
10
10
10
10
10
20
20
20
20
20
20
20
20
15
15
15
15
15
15
15
0000
0005
0015
0030
0065
0115
0145
0000
0005
0020
0045
0080
0110
0140
0175
0000
0005
0015
0050
0090
0120
0155
MG/L P
0
0
0
0
0
Q
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.035
.030
.033
.037
.035
.065
.144
.013
.012
.013
.018
.030
.041
.051
.084
.020
.015
.015
.034
.040
.043
.041
UG/L PERCENT
0.5
1.6
1.5
-------
RETRIEVAL DATE 76/09/?4
081205
36 51 20.0 107 33 28.0 3
NAVAJO RESERVOIR
35039 COLORADO
11EPALES 760114
2111202
0999
DEPTH CLASS CC
DATE
FROM
TO
75/04/30
75/08/18
75/09/30
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
05
05
05
05
05
CS
05
30
30
30
30
30
30
30
30
45
45
45
45
45
45
0000
0005
0015
0030
0065
0115
0165
0000
0005
0025
0050
0090
0140
0190
0220
0000
0005
0015
0045
0080
0116
CENT
6.7
6.7
6.4
6.1
6.1
5.8
5.3
20.6
21.1
19.7
13.0
9.2
6.9
5.3
4.2
18.7
18.7
18.7
17.9
14.9
13.2
00300
DO
MG/L
9.2
9.2
9.0
9.2
9.0
9.2
9.0
6.8
6.8
5.2
5.8
6.6
6.6
6.6
7.4
7.4
6.6
6.8
5.6
6.0
6.6
00300
DO
MG/L
9.2
9.2
9.0
9.2
9.0
9.2
9.0
6.8
6.8
5.2
5.8
6.6
6.6
6.6
7.4
7.4
6.6
6.8
5.6
6.0
6.6
C0077 00094
TRANSP CNDUCTVY
SECCHI FIELD
INCHES MIC*OMHO
34 193
192
189
187
189
196
196
132 207
192
180
151
118
181
201
210
60 160
160
163
152
122
108
00400
PH
SU
8.20
8.20
6.20
7.70
7.80
3.00
8.10
8.00
8.30
8.00
7.90
7.75
7.70
7.70
7.70
7.90
7.95
7.95
7.80
7.70
7.70
00410
T ALK
CAC03
MG/L
89
90
89
88
86
86
88
67
70
66
63
54
77
87
93
71
74
75
73
63
63
00610
NH3-N
TOTAL
MG/L
0.020
0.020
0.020K
0.020K
0.064
0.030
0.030
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
00625
TOT KJEL
N
MG/L
0.400
0.400
o.soa
0.300
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200K
0.200
0.300
0.300
0.400
0.300
0.300
00630
N02&N03
N-TOTAL
MG/L
0.140
0.110
0.110
0.110
0.140
0.140
0.130
0.020K
0.230
0.060
0.090
0.100
0.160
0.180
0.190
0.020
0.020
0.210
0.060
0.100
0.110
00671
PrtOS-OIS
ORTHO
MG/L P
0.008
0.007
0.008
0.007
0.012
0.012
0.011
0.002
0.002K
0.002
0.005
0.019
0.019
0.017
0.017
0.005
0.004
0.004
0.011
0.020
0.018
K VALUE KNOtfN TO BE
LESS THAN INDICATED
-------
STDRET RETRIEVAL DATE 76/09/24
081205
36 51 20.0 107 33 28.0 3
NAVAJO RESERVOIR
3503v COLORADO
DATE
FROM
TO
75/04/30
75/08/13
75/09/30
11EPALES 760114 2111202
0999 FEET DEPTH CLASS 00
TIME DEPTH
OF"
DAY FEET
16 05 0000
16 05 0005
16 05 0015
16 05 0030
16 05 0065
16 05 0115
16 05 0165
16 30 0000
16 30 0005
16 30 0025
16 30 0050
16 30 0090
16 30 0140
16 30 0190
16 30 0220
16 45 0000
16 45 0005
16 45 0015
16 45 0045
16 45 0080
16 45 0116
00665
PHOS-TOT
MG/L P
0.025
0.025
0.013
C.019
0.021
0.034
0.028
0.025
0.025
0.022
0.027
0.045
0.039
0.040
0.038
0.020
0.013
0.015
0.021
0.028
0.043
32217 00031
CHLRPHYL INCDT LT
A REMNING
UG/L PERCENT
9.0
1.7
1.5
-------
STOSET RETRIEVAL DATE 76/09/2*
081206
37 01 28.0 107 22 10.0
NAVAJO RE5ESVOIR
06007 COLOrtAOO
DATE
FROM
TO
75/08/18
75/09/30
DATE
FROM
TO
75/08/18
75/09/30
TIME DEPTH
OF
DAY FEET
12 20 0000
12 20 0005
12 20 0015
12 20 0032
15 30 0000
15 30 0005
15 30 0015
15 30 0035
TIME DEPTH
OF
DAY FEET
12 ?0 0000
12 20 0005
12 20 0015
12 20 0032
15 30 0000
15 30 0005
15 30 0015
15 30 0035
00010
WATER
TEMP
CENT
18.6
18.2
17.7
16.4
IB. 5
18.5
18.1
17.8
00665
PHOS-TOT
MG/L P
0.040
0.030
0.041
0.070
0.031
0.032
0.027
0.033
00300
DO
MG/L
6.
6.
5.
5.
8.
7.
7.
7.
32217
00077
TRANSP
SECCHI
INCHES
2 9
4
4
2
2 12
6
0
2
00031
00094
CNOUCTVY
FIELD
MICROMHO
197
186
189
227
166
165
162
171
11EPALES 76011
Ou3t FC.ET DEf-
00400 00410
PH
su
7.95
7.90
7.90
7.90
8.10
8.10
8.10
8.10
T ALK
CAC03
MG/L
58
75
76
84
75
70
71
76
K 2111202
:TH CLASS 00
00610 00625
NH3-N TOT KJEL
TOTAL
M&/L
0.020K
0.020K
0.020
0.020K
0.020K
0.020
0.030
0.030
N
MG/L
0.200
0.200K
0.200
0.500
0.200
0.200
0.200
0.200K
00630
N02&N03
N-TOTAL
MG/L
0.030
0.030
0.030
0.040
0.020
0.020K
0.020K
0.020K
00671
PHOS-OIS
ORTHO
MG/L P
0.014
0.021
0.017
0.013
0.013
0.010
0.008
0.010
CHLRPHYL INCDT LT
A
UG/L
1.
5.
REMNING
PERCENT
4
9
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
iTORET RETRIEVAL DATE 76/09/24
081207
36 55 57.0 107 36 09.0 3
NAVAJO RESERVOIR
35045 COLORADO
11EPALES 760114 2111202
0070 FEET DEPTH CLASS 00
DATE
FROM
TO
75/06/15
75/09/30
DATE
FROM
TO
75/08/15
75/09/30
TIME DEPTH
OF
DAY FEET
16 15 0000
16 15 0005
16 15 0020
16 15 0045
16 15 0065
15 00 0000
15 00 0005
15 00 0015
15 00 0040
15 00 0070
15 00 0105
TIME DEPTH
OF
DAY FEET
16 15 0000
16 15 0005
16 15 0020
16 15 0045
16 15 0065
15 00 0000
15 00 0005
15 00 0015
15 00 0040
15 00 0070
15 00 0105
00010
WATER
TEM*>
CENT
19.5
19.7
18.9
12.4
10.4
19.0
18.8
18.5
18.4
15.4
13.6
00665
PHOS-TOT
MG/L P
0.032
0.028
0.026
0.053
0.056
0.022
0.024
0.016
0.018
0.028
0.024
00300
DO
MG/L
6.
6.
6.
3.
4.
8.
7.
6.
6.
5.
6.
32217
00077
TRANSP
SECCHl
INCHES
4 96
4
4
8
2
6 60
0
8
6
4
0
00031
00094
CNOUCTVY
FIELD
MICROMHO
206
202
199
142
123
168
177
175
173
125
158
00400
PH
su
7.80
7.90
8.10
8.10
8.00
8.10
8.10
8.10
8.05
7.85
8.00
00410
T ALK
CAC03
MG/L
75
75
76
70
61
87
81
83
87
68
80
00610 00625 00630
NH3-N TOT KJEL N02&N03
TOTAL
MG/L
0.020K
0.020K
0.020K
0.030
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
0.020K
N N-TOTAL
MG/L
0.200
0.200
0.200K
0.200K
0.200K
0.200K
0.200
0.200K
0.200K
0.200K
0.200
MG/L
0.020K
0.020K
0.020K
0.060
0.090
0.020K
0.020K
0.020K
0.020K
0.090
0.130
00671
PhOS-uIS
ORTMO
MG/L P
0.003
0.004
0.005
0.018
0.015
0.005
0.007
0.005
0.007
0.017
0.020
CHLRPHYL INCOT LT
A
UG/L
1.
4.
REMNING
PERCENT
5
7
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
APPENDIX E
TRIBUTARY AND WASTEWATER
TREATMENT PLANT DATA
-------
ST03ET KETRIEVAL OATt 76/09/24
36 40 50.0 107 40 22.0 <»
SAN JUAN
06 la NAVAJO DAM
0/MAVAJO RESERVOIR 110291
ST RT 173 8«DG 6 MI « OF NAVAJO DAM
11EPALES '2111204
0000 FEET DEPTH CLASS CO
DATE
FROM
TO
74/09/23
74/11/21
74/12/23
75/01/21
75/02/27
75/03/23
75/05/05
75/05/21
75/06/14
75/07/09
75/07/23
75/07/31
75/08/28
00630 00625
TIME DEPTH N02&N03 TOT KJEL
OF N-TOTAL N
DAY FEET
10
10
14
11
10
09
11
10
11
09
10
09
10
40
30
55
00
00
00
?5
15
05
20
00
30
30
MG/L
0
0
0
0
0
0
c
0
0
0
0
0
0
.112
.100
.104
.114
.032
.040
.035
.075
.040
.075
.115
.135
.085
MG/L
1.
0.
0.
0.
0.
0.
1.
0.
1.
0.
0.
6.
1.
100
900
400
600
400
400
200
950
500
300
300
500
350
00610 00671 00665
NH3-N PnOS-DIS PHOS-TOT
TOTAL URTMO
MG/L
0.
0.
0.
0.
0.
0.
C.
0.
0.
0.
0.
0.
0.
020
030
015
024
024
010
025
020
025
025
015
090
015
MG/L P
0
0
0
0
0
0
0
0
0
0
0
0
0
.005
.015
.010
.010
.008K
.005K
.005K
.005
.005
.005
.015
.025
.010
MG/L P
0.010
0.015
0.020
0.020
0.010K
0.020
0.020
0.030
0.020
0.017
0.020
0.030
0.010
K VALUE KNOWN TO 8E
LESS THAN INDICATED
-------
STOPET RETRIEVAL DATE 76/09/24
031242
37 01 10.0 107 15 20.0 4
SAN JUAN
os is PAGOSA JCT
T/^AVAJO rtESESVOI^ 110291
SEC KO tft^OG 16.5 MI E OF AK80LES
11EPALES 2111204
0000 f"£ET QtPlH CLASS GO
DATE
FROM
TO
74/09/33
74/1 1/21
74/12/23
75/01/23
75/02/27
75/03/28
75/05/05
75/05/21
75/06/11
75/07/07
75/07/23
75/07/31
75/08/23
C0630 00625
TIME DEPTH NO?kN03 TOT KJEL
OF N-TOTAL N
DAf FEET
It
14
11
13
15
13
13
13
14
13
14
14
13
20
00
30
00
00
00
20
20
40
15
10
00
30
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
.016
.005K
.016
.064
.040
.280
.100
.070
.055
.010
.010
.015
.010
MG/L
0.
i.
0.
0.
0.
i.
i.
i.
2.
X).
0.
1.
2.
250
000
600
800
600
050
000
600
400
250
650
250
600
00610 00671 00665
NH3-N PnOS-OIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
010
020
032
040
048
027
020
035
045
075
025
165
015
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
005
015
016
024
032
035
030
025
020
052
020
030
005
MG/L ?
0.027
0.030
0.040
0.040
0.100
0.360
0.130
0.190
0.147
0.052
0.090
0.090
0.030
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STO»ET RET&IEVSL DATE 76/09/24
0812bl
37 0". 35.0 107 24 15.0 4
03 7.5 ALLISON
T/NAVAJO rtESErfVOIK 110291
SEC SO 8^00 3.5 MI N OF AP.BOLES
11EPALES 211120t
0000 FEET DEPTH CLASS 00
DATE
FROM
TO
7<«/Q9/28
74/1 1/21
74/12/23
75/01/23
75/02/27
75/03/23
75/05/05
75/05/21
75/06/11
75/07/07
75/07/23
75/07/31
75/08/28
00630 00625
TIME DEPTH M026.N03 TOT KJEL
OF N-TOTAL N
OAY FEET
13
13
12
11
1«»
12
12
12
14
12
13
13
12
SO
30
40
00
00
45
50
30
00
35
45
50
30
MG/L
0
0
0
0
0
0
0
0
0
0
0
0
0
.003
.033
.006
.112
.072
.140
.540
.065
.035
.015
.015
.010
.005
MG/L
1.
0.
0.
1.
1.
0.
0.
1.
0.
0.
0.
0.
1.
000
700
600
300
100
800
500
300
925
750
500
700
400
00610 00671 00665
NH3-N PhOS-OIS PHOS-TOT
TOTAL ORTHO
MG/L
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
015
020
016
040
024
020
345
100
025
075
020
025
015
MG/L
3.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
0.
p
005K
005K
OO&K
008
008
015
005
015
020
015
015
025
005K
MG/L P
0.005K
0.010K
0.020
0.010K
0.130
0.160
0.150
0.200
0.130
0.080
0.030
0.050
0.010K
K VALUE KNOWN TO 8E
LESS THAN INDICATED
-------
STO-^ET RETRIEVAL DATE
0312C1
37 00 38.0 107 27 23.0 4
iAMBRITO CREE<
03 7.5 ALLISON
T/NAvAjO RESE^VOItf 110291
CLVRT i MI s AND .a MI E OF RT 151 JCT
11EPALE5 211120^
DATE T!uf DEPTH N02^N03
FROM Of
TO DAY TEET
74/09/26
74/11/21
74/12/23
75/02/27
75/03/28
75/05/05
75/05/21
75/06/1 1
75/07/07
75/07/23
75/07/31
75/08/28
13 30
13 00
13 30
13 00
12 00
12 30
12 10
13 45
12 10
12 25
13 12
12 04
0630
'*,N03
OTAL
IG/L
0.052
0.304
0.500
0.366
0.«.80
0.160
0.100
0.005
0.060
0.060
0.070
0.015
00625
TOT KJEL
N
MG/L
1.6CO
0.400
0.700
1.300
0.950
1.700
1.130
2.600
0.850
0.850
1.950
1.650
00610
NH3-N
TOT&L
MG/L
0.120
0.010
0.024
0.056
0.015
0.040
C.C30
0.050
0.075
0.035
C.030
0.040
00671
PHOS-DIS
OUTHO
MG/L P
0.010
0.005K
0.016
0.032
0.015
0.065
0.030
0.025
0.050
0.045
0.055
0.025
00665
PHOS-TOT
MG/L P
0.050
0.010K
0.020
0.120
0.260
0.310
0.170
0.030
0. 140
0.110
0.130
0.050
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STOSET RETRIEVAL DATE 76/09/24
DATE TIME DEPTH N02S.M03
FROM OF
TO DAY FEET
74/09/23
74/11/21
75/02/27
75/03/28
75/C5/05
75/05/21
75/06/H
75/07/07
75/07/23
75/07/31
75/08/28
13
12
12
11
12
12
13
12
12
12
12
00
30
00
00
20
00
30
00
47
30
10
031201
37 00 37.0 107 28 52.0 4
UNNAMtD STREAM
06 7.5 ALLISON
T/NAvAjO KESErfVQlft 110291
SEC SO ri*0(5 l.to MI S OF ALLSION
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
'S.M03
OTAL
IG/L
0.016
C.080
0.272
0.050
0.030
0.120
O.OJO
0.0?5
0.020
0.020
0.005
00625
TOT KJEL
N
MG/L
0.900
0.700
2.300
0.650
1.300
2.400
3.400
1.100
1.350
1.700
0.900
00610
NH3-^
TOTAL
MG/L
0.065
0.025
0.248
0.010
0.035
0.040
0.055
0.095
0.040
0.095
0.015
00671
PHOS-DIS
ORTrlO
MG/L P
O.C10
0.005K
0.032
0.005
0.010
0.160
0.040
0.035
0.055
0.025
00665
PHOS-TOT
MG/L P
0.030
0.010K
0.270
0.050
0.050*.
0.480
0.160
0.245
0.230
0.065
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STD^EIT RETRIEVAL DATE 76/09/24
0812E1
37 00 35.0 107 35 57.0 4
LOS PINOS KIVEr!
06 15 TIFFANY
RESERVOIR
AT GAGE STN
11EPALLS
110291
.5 M SE OF 5T RT
2111204
172 JCT
oooo
CLASS oo
DATE
FROM
TO
74/09/28
74/11/21
74/12/23
75/02/27
75/03/28
75/05/05
75/05/21
75/06/11
75/07/07
75/07/23
75/07/31
75/OS/23
00630 00625
THE DEPTH N02*.N03 TOT KJEL
OF N-TOTAL N
DAY FEET
12
11
14
li
10
10
11
11
11
11
10
11
00
30
15
30
15
12
00
50
45
00
45
15
MG/L MG/L
0
0
0
0
c
0
0
0
0
0
0
0
.012
.040
.019 (
. I4
-------
tT SETPIEVfiL OME 76/09/2'*
00630
OATE TI"E DE°T-» N02&N03
FROM OF N-TOTAL
TO DAY FEET MG/L
75/03/24 13 30
75/05/05 14 00
75/05/21 14 05
0.075
0.005
0.020
00625
TOT KJEL
N
MG/L
1.150
2.300
0.450
00610
NH3-N
TOTAL
MG/L
0.010
0.035
0.010
37 03 00.0 107 11 55.0 4
UMNAMEO 5TKEAM
08 15 PAGOSA JCT
T/NiAvAjO RESERVOI* 1102^.1
b£C *
-------
STORET RETRIEVAL DATE 76/09/24
0312-11
37 03 10.0 107 08 00.0 4
UNNAMED STREAM
0? 15 PAGOSA JCT
T/NAvAJO 3£SEP.vGIr! 110291
iEC KO -U'^G 2 Ml N OF JUANITA
11EPALES 211120<-
0000 FEET DEPTH CLASS 00
DATE
FP.OM OF
TO UAY
TIME DEPTH
FEET
75/03/28 14 00
75/05/05 13 45
75/05/21 13 50
75/06/11 15 30
75/07/07 14 OC
75/07/23 14 15
75/07/31 14 20
75/08/28 14 20
00630
N02&N03
N-TOTAL
MG/L
0.230
0.005
0.015
0.002
0.005
0.005
O.OOb
0.005
00625
TOT KJEL
N
MG/L
1.450
0.800
0.575
1.200
0.150
1.000
0.850
0.350
00610
NH3-N
TOTAL
M-3/L
0.020
0.015
0.015
0.025
0.020
0.010
0.010
0.005K
00671
PnOS-DIS
UPTHO
MG/L P
0.005K
0.005K
0.010
0.005K
0.005K
0.010
0.005K
00665
PfiOS-TOT
MG/L P
O.UlO
0.010K
0.015
0.010K
0.040
0.010
0.010*
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STOSET KETPIEVAL DATE 76/09/24
OATE TIME OE°TH N02?>N03
FROM OF
TO DAY FEET
74/09/23
74/11/21
74/12/23
75/02/27
75/03/28
75/05/05
75/05/21
75/06/11
75/07/07
75/07/23
75/07/31
75/08/28
12
11
14
11
10
10
11
12
11
11
11
11
17
45
00
00
00
25
10
00
00
15
00
25
0812M
37 CO 40.0 107 35 45.0 4
SPRING CREEK
0-? 15 TIFFANY
T/NAVAjO ^ESErtvOlK 110291
BNK AT OAGE .'+ MI t OF LA 60CA ON SEC kO
11EPALES 2111204
0000 FEET OEPTn CLASS 00
10630
!»>N03
'OTAL
-------
STORET RETRIEVAL DATE 76/09/24
DATE TIME DEPTH N02J.N03
FROM OF
TO DAY FEET
74/12/33
75/C1/20
75/03/19
75/03/13
75/04/16
75/05/08
75/05/21
75/05/28
75/06/10
75/06/23
75/07/10
75/07/30
75/06/20
75/09/10
75/09/30
75/10/22
75/10/29
10 00
10 00
11 00
11 00
15 00
11 00
14 00
10 00
13 00
08 00
08 00
08 00
08 00
U7 00
08 00
0612E4 PUOS12EA
37 06 45.0 107 37 45.0 4
IGM4CIO
08057 7.5 CARACAS
T/NAVAJO RES.
LOS P1NOS rtIVt«
11EPALES 2141204
0000 FFFT OfPTH CLASS 00
P001000
0630
'J.N03
OTAL
iG/L
0.080
0.080
0.080
o.oao
0.200
0.050
0.050
0.050
0.050
0.050
0.050
0.050
0.050
0.050
0.025
0.025
0.100
00625
TOT KJEL
N
MG/L
10.000
14.000
9.700
l.OOOK
5.700
5.600
3.200
3.400
6.800
4.800
7.500
17.500
7.400
6.600
6.900
11.000
9.900
00610
NH?-N
TOTAL
MG/L
0.100
0.080K
3.200
0.390
3.195
0.075
0.370
0.050K
C.050
0.175
0.050
0.025K
0.025K
0.100K
0.025K
0.140
0.460
00671
PnOS-OIS
ORTHO
MG/L P
3.700
2.700
2.300
1.450
1.300
2.300
1.900
2.600
2.000
2.800
2.400
2.400
2.600
1.700
2.100
2.400
00665
PHOS-TOT
MG/L P
3.200
4.500
3.500
2.300
1.900
2.300
2.500
2.200
4.300
2.000
3.600
4.300
3.000
3.000
2.100
2.600
2.800
50051
FLO*
RATE
INST MGD
0.080
0.080
0.129
0.130
50053
CONDUIT
FLO*-MGO
MONTHLY
0.060
0.034
0.086
0.080
0.129
0.129
0.130
0.130
0.130
0.130
0.130
0.130
0.135
0.130
0.130
0.130
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
ST3«ET RETRIEVAL 'JATE 76/09/24
DATE TIME DEPTrt
FROM OF
TO DAY FEET
75/04/21 08 30
75/06/05 08 ?0
75/07/03 09 00
75/08/07 15 00
75/09/33 13 30
75/10/39 08 45
P00812EB
37 13 30.0 107 36 00.0 4
pooo39o
03 7.5 CHIMNEY KOCK
T/NAV4JO f?ES. 110291
LOS PINOS KIVER
llEPALtiS 214120^
0000 FEET DEPTH CLASS 00
00630
N02kN03
N-TOTAL
MG/L
0.350
0.300
0.050
0.050
C.125
0.050
00625
TOT KJEL
N
MG/L
5.000
1.700
3.300
5.100
4.300
6.000
00610
NH3-N
TOTAL
MG/L
0. 150
0.300
0.035
0.067
0.220
0.025
00671
PMOS-OIS
ORTHO
MG/L P
1.450
1.650
0.860
0.810
0.790
1.350
00665
PHOS-TOT
MG/L P
2.100
2.100
0.860
0.810
2,900
1.700
50051
FLOW
RATE
INST MGD
0.050
0.113
0.011
0.200
0.200
0.200
50053
CONDUIT
FLO--MGO
MONTHLY
0.050
0.113
0.011
0.200
0.200
0.200
------- |