U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
REPORT
ON
LAKEOWYHE
MftLJEJR COIMIY
OREGON
EPA REGION X
WORKING PAPER No, 831
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
REPORT
ON
LAKEOWYHE
MftUBJR COUN1Y
OREGON
EPA EGION X
WORKING PAPER No, 831
WITH THE COOPERATION OF THE
OREGON DEPARTMENT OF ENVIRONMENTAL QUALITY
AND THE
OREGON NATIONAL GUARD
JANUARY, 1978
-------
i
CONTENTS
Page
Foreword ii
List of Oregon Lakes and Reservoirs iv
Lake or Reservoir Drainage Area Map . v
Sections
I. Conclusions . 1
II. Drainage Basin Characteristics 3
III. Water Quality Summary 4
IV. Nutrient Loadings 8
V. Literature Reviewed 12
VI. Appendices 13
-------
11
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nation-
wide threat of accelerated eutrophication to freshwater lakes and
reservoirs.
OBJECTIVES
The Survey was designed to develop, in conjunction with state
environmental agencies, information on nutrient sources, 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)], water
quality criteria/standards review [§303(c)J, clean lakes [§314(a,b)],
and water quality monitoring [5106 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 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.
ACKNOMLEPMENT
The staff of the National Eutrophication Survey (Office of
Research & Development, U. S. Environmental Protection Agency)
expresses sincere appreciation to the Oregon Department of Environ-
mental Quality for the professional involvement and to the Oregon
National Guard for conducting the tributary sampling phase of the
the Survey.
William H. Young,, Department Director, and Harold L. Sawyer,
Administrator, and the staff of the Hater Quality Control Division
provided invaluable lake documentation and counsel during the
Surveys reviewed the preliminary reports, and provided critiques
most useful in the preparation of this Working Paper series.
Brigadier General Richard A. Miller, the Adjutant General
of Oregon, and Project Officer Lt. Colonel John Mewha, who
directed the volunteer efforts of the Oregon National Guardsmen,
are also gratefully acknowledged for their assistance to the
Survey.
-------
1v
NATIONAL EUTROPHI CATION SURVEY
STUDY LAKES and RESERVOIRS
STATE OF OREGON
NAME COUNTY
Brown!ee Baker, OR; Washington, ID
Diamond Douglas
Hells Canyon Baker, Wallowa, OR; Adams,
Idaho, ID
Hills Creek Lane
Owyhee Malhuer
Oxbow Baker, OR; Adams, ID
Suttle Jefferson
Waldo Lane
-------
(S> Tributary Sampling Site
X Lake Sampling Site
10 20 30 40 Km.
-------
LAKE OWYHEE
STORE! NO. 4105
I. CONCLUSIONS
A. Trophic Condition:
Survey data indicate that Lake Owyhee is eutrophic. It ranked
last in overall trophic quality among the eight Oregon lakes and
reservoirs sampled in 1975 when compared using a combination of
six water quality parameters*. All of the other water bodies had
less median total phosphorus and median dissolved orthophosphorus,
four had less median inorganic nitrogen, two had less mean chloro-
phyll a_, and all of the others had greater mean Secchi disc trans-
parency. Significant depression of dissolved oxygen with depth
occurred at station 2 in August and September.
Survey limnologists noted some surface scums of algae in
several of the coves and embayments and reported that the water
color ranged from a light green to brown.
The low Secchi disc transparencies indicate that at times
primary productivity in the lake may be light-limited. In a
previous report, it is stated that sediment is a major surface
runoff problem in the drainage basin (Volk, 1974).
B. Rate-Limiting Nutrient:
The algal assay results indicate Lake Owyhee was limited
by nitrogen at the time the sample was collected (04/08/75).
* See Appendix A.
-------
2
The lake data indicate nitrogen limitation at all sampling
times and stations.
C. Nutrient Controllability:
1. Point sources—No known wastewater treatment plants
discharged in the watershed during the sampling year. Septic
tanks serving lakeshore residences and campgrounds were esti-
mated to have contributed less than 0.1% of the total phos-
phorus load to Lake Owyhee. However, a shoreline survey would
have to be done to determine actual input from such sources.
The present phosphorus loading of 1.77 g/m2/year is 2.4
times that proposed by Vollenweider (Vollenweider and Dillon,
1974) as a eutrophic loading (see page 11). Any significant
improvement of the present trophic condition would involve
control of nutrient runoff from non-point sources.
2. Non-point sources—Non-point sources accounted for
99.9% of the total phosphorus load during the sampling year.
The Owyhee River contributed 93.0%, and the minor tributaries
and immediate drainage contributed an estimated 6.0%.
An additional investigation is needed to determine con-
trollability of nutrients from non-point sources. Initiation
of land-conservation methods within the drainage basin may
result in a reduced sediment and nutrient load.
-------
II. LAKE AND DRAINAGE BASIN CHARACTERISTICS1"
A. Morphometry :
1. Surface area: 56.25 kilometers2.
2. Mean depth: 24.6 meters.
3. Maximum depth: 35.7 meters.
4. Voluem: 1,381.509 x 106 m3.
5. Mean hydraulic retention time: 1.7 years (based on outflow).
B. Tributary and Outlet:
(see Appendix C for flow data)
1. Tributaries -
Drainage Mean flow
Name area (ion2)* (m3/sec)*
Owyhee River 20,720.0 25.520
Minor tributaries &
immediate drainage - 8,182.1 1.660
Totals 28,848.1 27.180
2. Outlets -
Owyhee River 28,904.4 8.776
Canal H-l - 11.587
Canal 1-1 - 5.676
Totals 28,904.4** 26.039
C. Precipitation***:
1. Year of sampling: 28.2 centimeters.
2. Mean annual: 22.3 centimeters.
t Table of metric equivalents—Appendix B.
tt McHugh, 1972.
* For limits of accuracy, see Working Paper No. 175, "...Survey Methods,
1973-1976".
** Includes area of lake.
*** See Working Paper No. 175.
-------
4
III. WATER QUALITY SUMMARY
Lake Owyhee 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 one
or more depths at four stations on the lake (see map, page v). During
each visit, a single depth-integrated (4.6 m or near bottom to surface)
sample was composited from the stations for phytoplankton identification
and enumeration; and during the April 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 4.6 meters at
station 1, 27.4 meters at station 2, 59.4 meters at station 3, and 65.5
meters at station 4.
The sampling results are presented in full in Appendix D and are
summarized in the following table.
-------
TEMP (C)
oiss oxr
CK'JCTVY (MCROMO)
OH (STAND UNITS)
TOT 4LK (MG/L>
TOT P (MG/L)
ORTHO P (MG/L)
N02»N03 (MG/L)
AMMONIA (MG/L)
Kj£L N (MG/L)
I^C^G N (MG/L)
TOTAL N (MG/L>
CMLK^YL A (urvL)
SECCHI (METERS)
A. SlHMArJY OF PHYSICAL A;-.'D
1ST SAMPLING ( 4/ 8/75)
4 SITES
VNOiE MEAN MEDIAN
3.b
10.6
113.
7.7
63.
0.068
0.064
0.2*0
C.040
0.400
0.340
0.770
o.«
0.3
6.0
- 1?.2
- 1^4.
•5.0
- *?.
- 0.133
- 0.103
- 0.420
- 0.080
- 0.*OG
- 0.500
- 1.100
3.0
0.3
4.7
11.5
13H.
7.9
HI.
0.103
0.081
0.3*0
0.050
0.454
0.43o
O.H3<«
1.4
0.3
4.b
11.6
142.
7.9
86.
0.09d
0.077
0.390
0.050
0.400
0.4J,
0.7*5
O.s
0.3
STOKET CODE 4105
KANGE
1.4 - 21.2
3.4 - 9.8
124. - 328.
7.6 - 9.4
51. - 142.
0.060 - 0.161
0.016 - 0.069
0.030 - 0.480
0.040 - 0.270
0.200 - 0.800
0.070 - 0.600
0.^30 - 0.880
2.6 - *.7
0.3 - 0.7
ICS FOK
NG ( 8/
TES
MEAN
12.3
6.9
194.
8.5
83.
0.098
0.047
0.242
0.076
0.412
0.318
0.654
5.9
0.5
OwYHEE
1/75)
MEDIAN
13.1
7.2
192.
3.3
81.
0.095
0.053
0.290
0.050
0.400
0.420
0.680
5.6
0.6
3KD
KANGE
1.1 -
1.8 -
104. -
7.4 -
56. -
0.050 - 0
0.024 - 0
0.020 - 0
0.020 - 0
0.200 - 0
0.040 - 0
0.420 - 0
l.ft -
0.3 -
SAMPLING (
4
19.2
10.0
304.
8.7
124.
.143
.076
.420
.050
.600
.470
.890
4.3
0.9
SITES
MEAN
12.9
6.7
186.
8.0
84.
0.066
0.050
0.236
0.026
0.422
0.262
0.657
2.8
0.6
9/16/75)
MEDIAN
17.6
7.0
155.
7.8
82.
0.081
0.056
0.250
0.020
0.400
0.280
0.720
2.5
0.7
-------
B. Biological characteristics:
1. Phytoplankton -
Sampling
Date
04/08/75
08/01/75
09/16/75
2. Chlorophyll a_ -
Sampling
Date
04/08/75
08/01/75
09/16/75
Dominant
Genera
1. Cyclotella sp.
2. Chroomonas "{?) sp_.
3. Chiamydomonas sp.
4. Phormidium sp.
5. Cryptomonas sp.
Other genera
Total
1. Coelosphaerium sp.
2. Cryptomonas sp.
J. Apnam'zomenon sp.
4. Phormidium sp.
5. Scenedesmus sp.
Total
1. Apl
2. G\
ham'zomenon sp.
roomonas (?) sp.
Total
Station
Number
1
2
3
4
1
2
3
4
1
2
3
4
Algal Units
per ml
207
207
69
69
34
68
654
304
154
101
101
51
711
409
204
613
Chlorophyll a
(ng/1)
3.0
0.9
0.8
0.9
2.6
7.5
9.7
3.7
4.3
1.8
1.8
3.2
-------
7
C. Limiting Nutrient Study:
1. Autoclaved, filtered, and nutrient spiked -
Ortho P Inorganic N Maximum yield
Spike (mg/1) Cone, (mg/1) Cone, (tng/1) (mg/l-dry wt.)
Control 0.040 0.304 8.2
0.050 P 0.090 0.304 8.5
0.050 P + 1.0 N 0.090 1.304 15.8
1.0 N 0.040 1.304 10.1
2. Discussion -
The control yield of the assay alga, Selenastrum capri-
cornutum, indicates that the potential primary productivity
of Lake Owyhee was high at the time the sample was collected
(04/08/75). Also, the lack of growth response with the ad-
dition of phosphorus until nitrogen was also added indicates
the lake was nitrogen limited at that time. Note that the
addition of nitrogen alone resulted in a significantly greater
yield than that of the control.
The lake data indicate nitrogen limitation as well. The
mean inorganic nitrogen/orthophosphorus ratios were 8/1 or
less at all sampling stations and times, and nitrogen limita-
tion would be expected.
-------
8
IV. NUTRIENT LOADINGS
(See Appendix E for data)
For the determination of nutrient loadings, the Oregon 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 January and February when two samples were collected.
Sampling was begun in October, 1974, and was completed in September,
1975.
Through an interagency agreement, stream flow estimates for the
year of sampling and a "normalized" or average year were provided by
the Oregon District Office of the U.S. Geological Survey for the tri-
butary sites nearest the lake.
In this report, nutrient loads for sampled tributaries were cal-
culated using mean annual concentrations and mean annual flows. Nu-
trient loads for outlet canal (1-1) were calculated using the mean
concentrations in the Owyhee River at station A-l and the mean annual
flow at 1-1.
Nutrient loads for unsampled "minor tributaries and immediate
drainage" ("ZZ" of U.S.G.S.) were estimated using the mean concentra-
tions in the Owyhee River at station A-2 and the mean annual ZZ flow.
No known wastewater treatment plants impacted the lake during the
sampling year.
-------
9
A. Waste Sources:
1. Known municipal - None
2. Known industrial - None
B. Annual Total Phosphorus Loading - Average Year:
1. Inputs -
kg P/ % of
Source y_r total
a. Tributaries (non-point load) -
Owyhee River 92,550 93.0
b. Minor tributaries & inmediate
drainage (non-point load) - 6,020 6.0
c. Known municipal STP's - None
d. Septic tanks* - 30 <0.1
e. Known industrial - None
f. Direct precipitation** - 985 1.0
Total 99,585 100.0
2. Outputs -
Lake outlets - Owyhee River 28,505
Outlet Canal (H-l) 54,080
Outlet Canal (1-1) 18.435
Total 101,020
3. Net annual P loss - 1,435 kg.
* Estimate based on 1 park, 1 resort, 4 campgrounds, and 60 lakeshore resi-
dences; see Working Paper No. 175.
** See Working Paper No. 175.
-------
10
C. Annual Total Nitrogen Loading - Average Year:
1. Inputs -
kg N/ % of
Source yj; total
a. Tributaries (non-point load) -
Owyhee River 974,610 88.6
b. Minor tributaries & immediate
drainage (non-point load) - 63,395 5.8
c. Known municipal STP's - None
d. Septic tanks* - 1,065 0.1
e. Known industrial - None
f. Direct precipitation** - 60.730 5.5
Total 1,099,800 100.0
2. Outputs -
Lake outlets - Owyhee River 299,455
Outlet Canal (H-l) 524,725
Outlet Canal (1-1) 193,675
Total 1,017,855
3. Net annual N accumulation - 81,945 kg.
D. Non-point Nutrient Export by Subdrainage Area:
Tributary kg P/km2/yr kg N/km2/yr
Owyhee River 4 47
E. Mean Nutrient Concentrations in Ungaged Streams:
Mean Total P Mean Total N
Tributary Cone, (mg/1) Cone, (mg/1)
Dry Creek 0.086 0.870
Birch Creek 0.102 1.241
Crooked Creek 0.047 1.372
* Estimate based on 1 park, 1 resort, 4 campgrounds, and 60 lakeshore
residences; see Working Paper No. 175.
** See Working Paper No. 175.
-------
11
F. 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 1.77 loss* 19.6 1.5
Vollenweider phosphorus loadings
(g/m2/yr) based on mean depth and mean
hydraulic retention time of Lake Owyhee:
"Dangerous" (eutrophic loading) 0.74
"Permissible" (oligotrophic loading) 0.37
There was an apparent loss of phosphorus during the sampling year. This
may have been due to unknown point sources discharging directly to the
lake, resolubilization of previously sedimented phosphorus, or under-
estimation of the phosphorus load in Owyhee River due to the sampling
location (station A-2; see map page v) which is a considerable distance
from the lake.
-------
12
V. LITERATURE REVIEWED
McHugh, Robert A., 1972. Interim study of some physical, chemical,
and biological properties of selected Oregon lakes. OR Dept.
of Environ. Qual., Portland.
Volk, V. Van, 1974. Water quality in eastern Oregon. In: Land
and Water Use in Oregon. Seminar conducted by OSU Water Res.
Research Inst., Corvallis, pp 113-130.
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.
-------
13
VI. APPENDICES
APPENDIX A
LAKE RANKINGS
-------
LAKE DATA TO BE USED IN RANKINGS
LAKE
CODE LAKE NAME
4101 6ROWNLEE RESERVOIR
4102 DIAMOND LAKE
4103 HELLS CANYON RESERVOIR
4104 HILLS CREEK RESERVOIR
4105 OrtYHEE
4106 OXBOW RESERVOIR
4107 SUTTLE LAKE
4108 WALDO LAKE
MEDIAN
TOTAL P
0.079
0.028
0.06S
0.038
0.095
0.071
0.031
0.005
MEDIAN
INORG N
0.56C
0.040
0.640
0.060
0.425
0.690
0.040
0.040
500-
MEAN SEC
428.133
294.500
429.111
435.200
480.417
425.555
95.000
-100.000
MEAN
CHLORA
16.207
7.300
18.722
2.333
3.350
10.311
9.167
0.350
15-
MIN DO
14.500
6.800
12.400
7.400
13.200
12.200
6.800
6.800
MEDIAN
DISS CRTKO P
O.CK3
0.011
0.045
0.027 .
0.064
0.040
C.020
0.006
-------
PERCENT OF LAKES WITH HIGHER VALUES {NUMBER OF LAKES WITH HIGHER VALUES)
LAKE
CODE LAKE NAME
BROHNLEE RESERVOIR
4102 DIAMOND LAKE
41C3 HELLS CANYON RESERVOIR
4104 HILLS CREEK RESERVOIR
4105 OWYHEE
4106 OXBOW RESERVOIR
4107 SUTTLE LAKE
4108 WALDO LAKE
MEDIAN
TOTAL P
14 (
86 (
43 (
57 (
0 (
29 (
71 (
100 (
1)
6)
3)
4)
0)
2)
5)
7)
MEDIAN
INORG N
29 <
93 (
14 (
57 (
43 <
0 (
71 (
93 (
2)
6)
1)
4)
3)
0)
5)
6)
500-
MEAN SEC
43 (
71 <
29 (
14 (
0 (
57 (
66 (
100 (
3)
5)
2)
1)
0)
4)
6)
7)
MEAN
CHLORA
14 (
57 (
0 (
86 (
71 (
29 (
43 (
100 (
1)
4)
0)
6)
5)
2)
3)
7)
1 C_
A «•*
MIN DO
0 (
86 (
29 (
57 (
14 (
43 (
86 (
86 (
0>
5)
2>
4)
1)
3)
5)
5)
MEDIAN
DISS ORTnO P
29 (
86 (
14 (
57 (
0 (
43 (
71 (
100 (
2)
6)
1)
4)
0)
3)
5)
7)
INDEX
NO
129
479
129
328
123
201
428
579
-------
LAKES RAIDED BY INDEX NOS.
RANK LAKE CODE LAKE NAME INDEX NO
1 4108 WALDO LAKE • 579
2 4102 DIAMOND LAKE 479
3 4107 SUTTLE LAKE 423
4 4104 HILLS CREEK RESERVOIR 326
5 4106 OXBOW RESERVOIR 201
6 4101 BROwNLEE RESERVOIR 129
7 4103 HELLS CANYON RESERVOIR 129
8 4105 OWYHEE 128
-------
APPENDIX B
CONVERSION FACTORS
-------
.-*• •
CONYERS10K 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
-------
APPENDIX C
TRIBUTARY ROW DATA
-------
f CuOE
TOTAL .DRAINAGE
TRIBUTARY FLOW INFORMATION FUR OREGON
0»r«ct
A OF I_AK£H1
410311
41C5ZZ
239C .,•*
207PO.O
0.0
0.0
«!=<*. 4
°.9Vb
23. 8/
0.0
O.U
1. i-i>
17.188
33.98
0.0
0.0
1.30
27.269
52.67
0.0*5
0.113
1.96
11.562
TOTAL 'JniAINAGE AREA OF LAKE =
SUM OF SUB-DRAINAGE AREAS =
10.2bl
46.70
26.590
12.459
2.0t
3.7J8
25.26
25.797
11.723
1.42
3.426
6.77
27.751
12.969
1.42
2.775
3.79
25.259
11.667
1.36
2.237
3.54
16.141
8.665
1.36
0. f65
4.16
4.955
2.662
1.36
0.085
5.66
0.0
0.0
1.47
O.OB5
12.32
0.0
0.0
1.47
8.776
25.52
11.587
5.676
1.66
SUMMARY
NOT? *«» HI «. n
CANAL OUTFLOWS
= 28904. <»
NO DS. AREA. r. OUTFLOW ARE OAM
TOTAL FLU« IN
TOTAL FLOW OUT
533.49
106.10
3 CANALS.
MEAN MONTHLY FLO«S AND UAILY FLO«S
THItiJTAWY MONTH rEA* rftA.N FLO* OAY
4103A1
FLO* DAY
FLO* DAY
10
11
12
1
2
3
4
5
6
7
u
'-)
11
11
1?
I
p
3
^
5
6
7
M
^
7t
74
74
75
75
75
75
75
75
7S
75
75
74
74
74
75
75
75
75
75
75
75
75
75
0.79J
0.071
0.068
0.068
0.076
3.511
109.869
109.303
36.529
5.635
5.125
3.738
3.993
5.324
6.116
6.258
15.008
84.364
104.772
190.856
77.3C5
18.463
6.994
5.437
19
17
14
2
9
9
19
23
14
17
16
12
20
16
15
11
9
8
19
24
10
17
11
12
O.OB2
0.071
0.068
0.065
0.074
0.096
117.515
165.087
61.269
5.097
5.324
4.049
3.993
4.842
6.513
6.626
a. 6oo
81.553
92.879
146.398
90.048
Id. 831
5.748
5.182
12
23
25
23
0.068
0.076
26
FLU*1
C.071
7.306
8.269
-------
TRIHUTAKY FLO* INFORMATION FOR OREGON
08/11/76
LA
-------
APPENDIX D
PHYSICAL and CHEMICAL DATA
-------
STORE! KETRIEVAL DATE 76/08/12
00010
DATE
FROM
TO
75/04/08
75/08/01
75/09/16
TIME
OF
OAr
14
14
14
15
15
15
11
11
11
30
30
30
50
50
50
15
15
15
DEPTH
FEET
0000
0005
0012
0000
0005
0015
0000
0005
0015
WATER
TEMP
CENT
6
5
5
20
20
20
18
18
18
00300
DO
MG/L
•
•
•
•
•
•
•
*
•
0
9
1
6
4
0
4
1
4
1
1
11
1
1
6
7
4
8
6
5
•
•
•
•
•
•
•
•
•
6
6
6
0
4
0
4
0
8
00077
TRANSP Ct>
SECCHI FIELO
INCHES M]
12
13
12
410501
43 18 21.0 117 25 13.0 3
OHYHEE
41045 OREGON
130791
11EPALES 2111202
0018 FEET DEPTH CLASS 00
94
TVY
1
MHO
113
114
113
319
304
328
302
304
304
00400
PH
SU
7.95
7.90
8.00
8.55
8.60
8.30
8.70
8.50
8.50
00410
T AUK
CAC03
MG/L
63
65
67
140
136
142
95
121
124
00610
NH3-N
TOTAL
MG/L
0.060
0.050
0.060
0.090
0.080
0.130
0.020K
0.020
0.020
00625
TOT KJEL
N
MG/L
0.700
0.800
0.600
0.500
0.500
0.600
0.400
0.400
0.400
00030
N02&N03
N-TOTAL
MG/L
0.280
0.300
0.300
0.060
0.060
0.080
0.040
0.070
0.070
00671
PHOS-DIS
OR TrlO
MG/L P
0.089
0.077
0.091
0.053
0.050
0.069
0.028
0.040
0.039
DATE
FROM
TO
75/04/08
75/08/01
75/09/16
TIME DEPTH
OF
DAY FEET
14 30 0000
14 30 0005
14 30 0012
15 50 0000
15 50 0005
15 50 0015
11 15 0000
11 15 0005
11 15 0015
00665
PHOS-TOT
MG/L P
0.118
0.116
0.101
0.097
0.099
0.150
0.057
0.081
0.081
32217
CHLRPHYL
A
UG/L
3.0
2.6
4.3
00031
INCDT LT
REMNING
PERCENT
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
ST03ET RETRIEVAL DATE 76/08/12
410502
43 24 35.0 117 19 47.0 3
OrffHEE
41Q45 OREGON
130791
DATE
FROM
TO
75/04/08
75/08/01
75/09/16
DATE
FROM
TO
75/04/08
75/08/01
75/09/16
TIME DEPTH
OF
DAY FEET
15 00
15 00
15 00
15 00
15 00
15 00
15 15
15 15
15 IS
15 15
15 15
IS 15
10 45
10 45
10 45
10 45
10 45
0000
0005
0015
0025
0050
0080
0000
0005
0015
0035
0060
0090
0000
0005
0015
0035
0068
TIME DEPTH
OF
DAY FEET
IS 00
15 00
15 00
IS 00
15 00
15 00
15 15
IS 15
IS 15
IS 15
15 15
15 15
10 45
10 45
10 45
10 45
10 45
0000
0005
0015
0025
0050
0080
0000
0005
0015
0035
0060
0090
0000
0005
0015
0035
0068
00010
WATER
TEMP
CENT
5.^
5.4
5.3
5.2
5.1
5.0
21.2
19.6
19.5
13.1
7.5
4.
-------
STOrfET KETRtEVAL DATE 76/08/12
DATE
FROM
TO
75/04/08
75/08/01
75/09/16
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
15
15
15
15
15
15
15
15
14
14
14
14
14
14
14
14
10
10
10
10
10
10
10
30
30
30
30
30
10
30
30
35
35
35
35
35
35
35
35
15
15
15
15
15
15
15
0000
0005
0015
0025
0050
0100
0150
0195
0000
0005
0015
0035
0065
0100
0135
0175
0000
0005
0015
0040
0070
0115
0160
CENT
4.6
4.4
4.4
4.<*
4.3
4.3
4.
-------
STOrtET (RETRIEVAL DATE 76/08/12
410503
43 33 55.0 117 30 44.0 3
OrtYHEE
41045 OREGON
130791
11EPALES 2111202
0200 FEET DEPTH CLASS 00
DATE
FROM
TO
75/04/OB
75/08/01
75/09/16
00665 32217 00031
TIME DEPTH PHOS-TOT CHLRPHYL INCOT LT
OF A REMNING
DAY FEET MG/L P
15
15
15
15
15
15
15
15
14
14
14
14
14
14
14
14
10
10
10
10
10
10
10
30
30
30
30
30
30
30
30
35
35
35
35
35
35
35
35
15
15
15
15
15
15
15
0000
0005
0015
0025
0050
0100
0150
0195
0000
0005
0015
0035
0065
0100
0135
0175
0000
0005
0015
0040
0070
0115
0160
0,
0
0
0
0
0
C
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
.097
.093
.095
.098
.100
.096
.0*6
.133
.084
.079
.079
.119
.109
.097
.095
.088
.079
.062
.122
.119
.096
.095
.096
UG/L PERCENT
0.8
9.7
1.8
-------
STORE! RETRIEVAL DATE 76/06/12
DATE
FROM
TO
75/04/08
75/08/01
75/09/16
00010
TIME DEPTH WATER
OF TEMP
DAY FEET
16
16
16
16
16
16
16
16
16
14
14
14
14
14
14
14
14
09
09
09
09
09
09
09
09
10
10
10
10
10
10
10
10
10
00
00
00
00
00
00
00
00
40
40
40
40
40
40
40
40
0000
0005
0015
0025
0050
0100
0125
0150
0215
0000
0005
0015
0040
0070
0100
0135
0175
0000
0005
0015
0040
0080
0120
0160
0210
CENT
4.
4.
<+.
4.
4.
4.
4.
3.
3.
18.
18.
18.
12.
5.
3.
2.
1.
17.
17.
17.
15.
4.
2.
1.
1.
00300
00
MG/L
6
5
5
5
5
3
3
9
6
6
3
3
4
8
1
0
4
8
9
6
8
0
2
5
1
12.
11.
1
1
1
1
1
1
1
1
I
1
1
1
•
•
•
•
•
•
11.
7
7
6
6
8
7
9
9
7
8
6
9
•
•
•
•
•
•
•
•
•
•
•
10.
9
9
•
•
2
6
8
8
6
6
4
2
2
2
8
4
0
4
2
8
0
8
0
2
0
0
4
0
410504
43 38 25.0 117 14 02.0 3
OHYrtEE
41045 OREGON
130791
HEP ALES
00300
00
MG/L
12.2
11.6
11.8
11.8
11.6
11.6
11.4
11.2
11.2
7.2
7.8
6.4
6.0
8.4
7.2
9.8
9.0
7.8
8.0
6.2
9.0
10.0
9.4
9.0
00077 00094
TRANSP CNOUCTVY
SECCHI FIELD
INCHES MICROMHO
12 142
142
142
142
142
142
142
143
150
23 145
139
133
124
149
192
203
207
24 160
155
147
138
135
142
143
146
0999
00400
PH
SU
8.00
8.00
7.95
7.95
7.95
7.95
7.90
7.90
7.90
9.20
9.30
8.95
8.20
8.00
8.00
8.10
8.30
8.00
8.65
8.40
7.80
7.80
7.70
7.70
7.70
2111202
FEET DEPTH CLASS
00410
T ALK
CAC03
MG/L
85
85
86
90
90
89
89
87
90
58
60
59
51
63
81
84
86
110
61
59
56
81
84
85
87
00610
NH3-M
TOTAL
MG/L
0.040
0.040
0.060
0.040
0.040
0.050
0.040
0.060
0.040
0.050
0.050
0.050
0.090
0.040
0.050
0.040
0.040
0.020
0.040
0.040
0.020K
0.020K
0.020K
0.020K
0.030
00
00625
TOT KJEL
N
MG/L
0.400
0.400
0.400
0.400
0.400
0.400
0.400
0.400
0.400
0.400
0.400
0.400
0.400
0.300
0.300
0.300
0.300
0.500
0.500
0.500
0.400
0.400
0.400
0.400
0.400
00630 00671
N02&N03 PHOS-OIS
N-TOTAL ORTHO
MG/L MG/L P
0.380
0.380
0.390
0.390
0.390
0.390
0.390
0.390
0.400
0.040
0.040
0.040
0.390
0.380
0.430
0.420
0.410
0.230
0.030
0.020K
0.340
0.390
0.390
0.390
0.390
0.077
0.070
0.076
0.075
0.083
0.064
0.075
0.075
0.076
0.016
0.017
0.020
0.067
0.062
0.060
0.055
0.050
0.027
0.026
0.032
0.064
0.058
0.059
0.057
0.056
K VALUE KNOWN TO BE
LESS THAN INDICATED
-------
STORE! RETRIEVAL DATE 76/08/13
410504
43 38 25.0 117 14 OZ.O 3
OHYHEE
41045 OREGON
130791
11EPALES
0999 FEET
DEPTH
2111202
CLASS 00
00665
DATE TIME DEPTH PHOS-TOT
FROM OF
TO DAY FEET MG/L P
32217
CHLRPHVL
A
UG/L
75/D4/08
75/08/01
75/09/16
16 10
16 10
16 10
16 10
16 10
16 10
16 10
16 10
16 10
14 00
14 00
14 00
14 00
14 00
14 00
14 00
14 00
09 40
09 40
09 40
09 40
09 40
09 40
09 40
09 40
0000
0005
0015
0025
0050
0100
0125
0150
0215
0000
0005
0015
0040
0070
0100
0135
0175
0000
0005
0015
0040
0080
0120
0160
0210
0.094
0.090
0.088
0.090
0.096
0.090
0.089
0.088
0.099
0.070
0.076
0.069
0.118
0.096
0.093
0.091
0.087
0.077
0.06»
0.064
0.099
0.077
0.075
0.075
0.089
00031
INCOT LT
REMMNG
PERCENT
3.7
3.2
-------
APPENDIX E
TRIBUTARY DATA
-------
STORE! RETRIEVAL DATE 76/08/ii*
DATE TIME DEPTH
FROM OF
TO DAY FEET
74/10/20
74/11/17
74/12/14
75/01/02
75/01/26
75/02/09
75/02/23
75/04/19
75/05/23
75/06/14
75/07/17
75/08/16
75/09/12
12 07
11 00
11 30
14 10
13 25
11 45
12 15
11 45
20 15
10 SO
20 30
18 00
21 10
410SA1
43 39 17.0 117 15 16.0 4
OKiW:E RIVER
41 7.5 OtfYHEE DAM
0/LAKE 0«YH£E
SEC 80 SHDG .8 MI OWNSTRK FRM OWYHEE 0AM
HEPALtS 2111204
0000 FEET DEPTH CLASS C8
'0630
:&N03
OTAL
IG/L
0.112
0.144
0.280
0.320
0.152
0.050
0.016
0.367
0.360
0.360
0.330
0.340
0.370
00625
TOT KJEL
n
MG/L
0.7CO
0.6CO
0.900
1.200
0.600
0.900
0.400
0.762
0.850
1.050
0.500
1.900
0.500
00610
NH3-N
TOTAL
MG/L
0.035
0.07C
0.020
0.030
0.032
0.024
0.008
0.040
0.030
0.025
0.010
0.575
0.027
00671
PHOS-DIS
ORTHO
KG/L P
0.070
0.040
C.040
0.055
0.048
0.032
0.016
0.060
0.065
0.065
0.055
0.080
0.045
00 665
PHOS-TCT
MG/L P
0.095
0.080
0.050
0.080
0.070
0.080
0.040
0.080
0.100
0.080
0.080
0.390
0.110
-------
STOSET RETRIEVAL DATE 76/03/12
DATE TIME DEPTH NC2&N03
FROM OF
TO DAY FEET
74/10/20
74/11/16
74/12/15
75/01/11
75/01/25
75/02/09
75/02/23
75/03/08
75/04/19
75/05/24
75/06/10
75/07/17
75/08/11
75/09/18
13 00
12 20
13 24
12 45
13 00
12 42
12 30
14 30
13 00
11 30
07 25
22 15
20 00
10 00
4JC5A2
42 53 45.0 107 39 00.0 4
OtfYHEE RIVER
M MALHEUR CO MAP
T/LAKE OWYHEE 090291
SEC RD BRDG 2 MI Na OF ROME
iiEPALES 2111204
0000 FEET DEPTH CLASS 00
0630
&N03
OTAL
!G/L
0.200
0.232
0.352
0.528
0.504
0.416
0.392
0.267
0.160
0.400
0.200
0.170
0.090
0.145
00625
TOT KJEL
N
MG/L
0,200
1.400
0.600
0.600
0.400
0.600
0.700
1.150
0.950
1.050
1.450
0.700
0.500
2.600
00610
NH3-N
TOTAL
MG/L
0.015
0.045
0.020
0.010
0.040
0.112
0.024
0.030
0.055
0.080
0.030
0.025
0.025
0.045
00671
PHOS-DIS
ORTHO
MG/L P
0.015
0.010
0.015
0.015
0.016
0.024
0.064
0.072
0.070
0.082
0.080
0.110
0.100
0.035
00665
PHOS-TOT
MG/L P
G.040
0.020
0.020
Ot040
0.020
0.050
0.110
0.160
0.140
0.240
0.210
0.170
0.270
0.100
-------
STORET RETRIEVAL DATE 76/08/12
DATE TIME DEPTH N02&N03
FROM OF
TO DAY FEET
75/01/12 11 30
75/01/26 10 15
75/02/09 12 00
75/02/23 11 00
75/04/20 10 30
75/05/23 18 30
75/06/14 09 30
4105C1
43 34 10.0 117 24 20.0 4
DRY CREEK
41 7.5 TWIN SPRINGS
T/LAKE OrtYHEE 130791
BNK 1.9 MI E OF DEAD HORSE SPRING
11EPALES 2111204
0000 FEET DEPTH CLASS 00
0630
S.N03
OTAL
IG/L
0.048
0.096
0.022
0.075
0.01S
0.030
0.005
00625
TOT KJEL
N
MG/L
0.600
0.800
0.900
0.800
1.300
1.100
0.300
00610
NH3-N
TOTAL
MG/L
0.005
0.080
0.024
0.144
0.050
.0.055
0.010
00671
PHOS-DIS
ORTHO
• MG/L P
0.080
0.084
0.072
0.130
0.050
0.010
00665
PHOS-TOT
MG/L P
0.025
0.100
0.120
0.080
0.190
0.080
0.010
-------
STORET RETRIEVAL D&7E ?6>/98/i2
DATE TIME DEPTH NC2&N03
FROM CF
TO DAY FEET
75/01/26 13 00
75/02/09 11 22
75/02/23 12 33
75/04/20 12 15
75/65/23 21 45
43 36 25*0 U? IS 13*0 4
BJRCH CREEK
4& 7«,S THE ELBOW
I/LAKE OUVHEE I3CVQJ
U&MPRVD RO 8SOG .3 Ml S£ OF RESORT
11EPALES 2111204
0000 FEET aSPTH CLASS 00
'8633
I&N03
OTAL
!G/L
ioseo
0.060
0s 244
0,080
0,300
S6625
TOT KJEL
N
MG/L
0«990
0.700
0.300
0.553
1.05Q
30613
NH3-N
TOTAL
I4G/L
0^072
0.048
0«024
0.040
0.035
ees?i
PKOS-DIS
ORTHO
MG/L P
S.20C
©9040
O.C64
0.070
00665
PHOS-TOT
KG/L P
0.210
0«9SS
Osffl?®
0.070
OdlO
-------
STORE! RETRIEVAL DATE 76/03/12
4105E1
42 51 30.0 117 44 00.0 4
CROOKED CREEK
41 MALHEUR CO MAP
T/LAKE OWYHEE 130791
ST HWY 95 BROS 7 MI SW OF ROME
4-
DATE
FROM
TO
74/10/19
74/11/16
74/12/15
75/01/il
75/01/25
75/02/08
75/02/23
75/03/08
75/04/19
75/05/24
75/06/10
75/07/17
75/08/11
75/09/18
TIME DEPTH
OF
DAY FEET
13 50
12 00
13 00
12 20
12 35
12 20
12 20
13 15
12 40
08 30
22 30
20 30
10 30
00630
N02&N03
N-TOTAL
MG/L
0.760
0.780
0.800
0.800
0.780
0.736
0.750
0.627
0.650
0.400
0.430
0.630
0.040
0.280
00625
TOT KJEL
N
MG/L
0.300
0.500
0.500
0.300
0.400
0.300
0.700
1.150
1.000
0.700
1.130
1.150
0.820
1.800
00610
NH3-N
TOTAL
MG/L
0.025
0.040
0.010
0.020
0.016
0.072
0.016
0.024
0.040
0.020
0.020
0.020
0.045
0.030
00671
PHOS-DIS
ORTHO
MG/L P
0.020
0.020
0.025
0.025
0.024
0.024
0.016
0.040
0.020
0.030
0.020
0.040
0.050
11EPALES
0000 FEET
00665
PHOS-TOT
MG/L P
0.025
0.030
0.040
0.040
0.030
0.024
0.050
0.060
0.040
0.080
0.035
0.040
0.061
0.110
DEPTH
2111204
CLASS 00
-------
S703ET RETRIEVAL DATE ?6/OS/i2
DATE TIME DEPTH
FROH OF
1C DAY FEET
75/04/20 13 30
75/05/33 32 15
75/06/14 13 00
75/07/18 21 30
75/68/13 2© 50
75/09/16 17 00
68&3C
0»350
9,375
0.310
0*370
0.230
96625
TOT XJEL
r\t
KGSL
U19Q
2.009
096! 9
TOTAL
KG/L
9.93C
ffl.960
0.035
:£E DAM
sr?oc> =3 MJ N OF jci
I ?.£?ALES
3900 KEET DEPTH
21J1204
CLASS OC
90635
PHOS-DIS PHOS-TO?
OSTKO
MG/L P KG/L P
0.065
0.679
0.08s;
Q.685
0.050
,089
0.130
-------
STORET RETRIEVAL DATE 76/33/12
DATE TIME DEPTH
FRO.H OF
TO DAY FEET
74/10/19 16 05
74/11/16 15 00
74/12/15 16 30
75/01/06 15 30
75/01/11 15 30
75/01/25 15 50
75/02/22 15 25
75/03/08 11 55
75/04/19 15 30
75/05/21 15 00
75/06/10 18 30
75/07/17 19 45
75/08/11 17 30
75/09/18 17 30
N02&N03
N-rOTAL
MG/L
0«016
Oo016
O.S^O
0.312
C.280
0.264
0.432
0.300
0*220
0.260
0.030
0.010
9.040
0.165
'•*;', ao oa»o iiv 37 is.c <»
SUCCOR CREEK
'»! MALKtUR CO HA?
T/LAKE OWVHEE ^30791
BNK AT SUCCOR CRK ST PKK 12 M N ROCXVIL
ne?/U.£S 2111204
C8PS FEET DEPTH CLASS CC
SS63©
I2&N03
•TOTAL
MG/L
O.OH6
Oo016
O.S^O
0.312
C.280
0.264
0.432
0.300
0*220
0.260
0.030
0.010
9.040
0.165
98625
TOT KJEL
N
MG/L
8.90C
1.403
3.100
JSGOO
0.500
0.906
0.700
1.150
0.750
0.980
0.950
0.750
0«930
1.40C
80S19
NH3-N
TOTAL
MG/L
0.030
3.035
0.030
S«056
G.3IO
C.032
0.032
0.C24
0.19®
3.020
c^e^o
0.020
e.oi7
0.030
C067I
FKOS-OIS
ORTHO
KG/L P
Ot.030
6.013
Oooeo
J.110
Q»iCO
0.112
0.160
0.196
0.145
0.135
0.150
0.1BO
0.032
0.035
OS665
PKOS-TOT
MG/L P
0.073
6,020
0*140
0.150
C.x4C
0.130
0*240
O.S40
0.240
0.500
0.193
0.160
0.055
o.ne
------- |