U.S. ENVIRONMENTAL PROTECTION AGENCY
SURVEILLANCE a ANALYSIS DIVISION
REGION VIII, DENVER, COLORADO 80203
AUGUST-1976
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An[Assessment of Region VIII Lakes
and Reservoirs in Support of the 1976-305(b)
Water Quality Inventory
by William J. Cogger
Marshall L. Payne
Lester D. Sprenger
Surveillance Branch
Surveillance and Analysis Division
Region VIII - Rocky Mountain Prairie Region
U.S. Environmental Protection Agency
August 1976
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Table of Contents
Introduction ... . 1
Data Needs ... ........ . .- . . 2
Trophic Conditions . . ... . . 3
Cleanup Candidates .... . 4
Point Source Sunmary . . ...... . . . 5
Cleanup Program . . .... . . . ... 6
Summary . . , ... . 7
Graphic Overview ......... 8
Tables
Table No. Name Page
1 Lakes and Reservoirs with STORET Data Gaps 10
2 Major Lakes of Ongoing Interest in Priority
Order . , . 14
3 NES Summary ,...,... 19
4 Non-NES Lake (Reservoir) Trophic Assessment 24
5 NES Supplementary Lake (Reservoir) Trophic
Assessment 34
6 Trophic Criteria , . . 40
7 . Lakes and Reservoirs in Region VIII Used As a
Drinking Water Supply . . 41
8 Cleanup Candidate Summary 44
9 State-by-State Trophic Summary 45
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Figures
Figure No. Name Page
1 Colorado Lake and Reservoir Assessment . . 46
2 Montana Lake and Reservoir Assessment . . 47
3 North Dakota Lake and Reservoir Assessment 48
\
4 South Dakota Lake and Reservoir Assessment 49
5 Utah Lake and Reservoir Assessment .... 50
6 Wyoming Lake and Reservoir Assessment . . 51
7 Colorado LANDSAT . . . 52
8 Montana LANDSAT 53
9 North Dakota LANDSAT .... 54
10 South Dakota LANDSAT 55
11 Utah LANDSAT . . . 56
12 Wyoming LANDSAT 57
13 Oahe Diversion Project 58
14 Garrison Diversion Project 59
15 Central Utah Diversion Project ,..,.. 60
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INTRODUCTION
The nutrient most often limiting algal production in Region VIITs
waterbodies 1s nitrogen (N:P ratio less than 14:1). Algal assays and
Intensive surveys, as available, generally confirm these conclusions.
Since phosphorous Is usually the limited nutrient in waterbodies
unimpacted by man's activities, results are opposite of what would be
expected in this sparsely populated, lightly industrail zed region.
It Is highly likely, given the low relative point source loading of
phosphorous, that higher than normal natural or "non-point" sources
are responsible for nitrogen limitation. Development activities,
such as mining, logging, farming, grazing and urbanization are suspect
to be predominant factors in causing "non-point" source trophic problems,
but the extent of this contribution is not clearly defined. Other
sources or sources that dominate those originated by fanning developments
are further suspect since farming; although responsible for increased
algal production, generally does not cause a shift from phosphorous to
nitrogen limitation. Importantly, most waterbodies in this assessment
were man-made.
Eutrophication 1s a dynamic process and further assessements must
be carefully tempered with supplementary data. Awareness that nitrogen to
phosphorous ratios are a static tool and that other nutrients could limit
production; (this Is not known to be the case) should certainly be
recognized. Certain waterbodies may have algal blooms at N:P ratios of
8:1 or 20:1. Short detention times and/or large quantities of rooted
plants tend to mitigate "dangerous" (Vollenwelder) nutrient loadings
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and could significantly slow eutropMcation. Increased hydraulic
flushing and removal of nutrients during runoff or turnover could
also control highly enriched conditions.
Decision-making for permit and grant action must proceed despite
finite resources of monitoring and data availability. This report, by
conmunleating what 1s believed to be the present trophic state,can
allow additional assessments; employing known dynamics or other
data, and hopefully bring a clearer rationale for monitoring and cleanup
activities.
DATA MEEDS
The National Eutrophication Survey (NES), now completed* has gone
a long way toward collecting the needed Region VIII lake and reservoir
data. Many Important regional waterbodles were Included In the 115
NES lake and reservoir coverage. A representative cross-section of lake
conditions were sought with the NES coverage. Including waterbodles
affected and unaffected by point and non-point sources.
The NES data was by far the most useful block of Information with
both chemical and biological data coverage. Outside of the NES com-
prehensive nitrogen and phosphorous data coverage was only added
for thirteen (13) lakes and reservoirs; even when reservoir outlet
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stations were used. Moreover, little or no biological or other support
data was available to augment these data. Comprehensive non-NES STORE!
data for only eight (8) lakes and reservoirs provided supplementary NES
information.
Now, follow-up data gathering and gap filling should be carried
on where the NES has left off. This can be accomplished through the
208 programs and the ongoing 106 programs. Table 1 offers a list of
lakes with 1 mediate data needs and Table 2 has a suggested priority
list of lakes for ongoing monitoring.
TROPHIC CONDITIONS.
As shown in Table 3, eighty-three (83) of 115 NES lakes appear to
be eutrophic, eighteen (18) seem in a transitional mesotrophic state, and
fourteen (14) evidence oligotrophlc conditions. Of the non-NES STORET
stations assembled in Table 4, twenty-one (21) lakes and reservoirs were
judged to be generally oligotrophic (suggesting a selection bias); eleven
(11) were seen to be mesotrophic and twenty-eight (28) were assessed as
eutrophic. (Ten were not assessable since dissolved phosphorous data was
unavailable.)
Seventy-rtwo (72) of the 115 NES lakes were nitrogen limited. Fifteen
(15) were often nitrogen limited, and twenty-eight (28) lakes exhibited
a basic phosphorous limitation. Assessment of the often very limited
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non-NES STORE! data were made for seventy-two (72) lakes and reservoirs
and indicated nitrogen limitation for sixty-five (65) waterbodies. These
data show only 7 phosphorous limited conditions and two of these seven (7)
waterbodies had high nitrogen and, phosphorous levels; specifically. John
Martin Reservoir and Sterling in Colorado, suggestive of high inputs from
farming activities.
Comparison of the HES lake data against non-KES STORET data, as
shown in Table 5, confirmed, in most cases, the assessments made with the
NES data alone.
CLEANUP CANDIDATES.
Using the numerical guidelines developed by EPA-Corvail is; highlighted
in Table 6, as measured against known conditions or pressures that could
accelerate eutrophy; together with uses of lakes or reservoirs for munic-
ipal drinking water as shown in Table 7; as well as conditions seemingly
conducive to improvement, a number of lakes have been tentatively iden-
tified in Table 8 that seem likely candidates for nutrient limitation.
These waterbodies were divided into two groups; first, those waterbodies
that now have low levels of phosphorous and should be protected; and
second, those where algal problems, if abated, would mitigate existing
problems or return conditions to "natural" loadings. Although abatement
efforts should generally focus on improvements via non-point source con-
trols, grant activity, Clean Lake action and/or permit action may also be
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appropriate in some cases as suggested in Table 8.
POINT SOURCE SUMMARY.
Eighteen (18) of the 115 NES lakes and reservoirs had point source
input of suspected significance. Nonetheless, fourteen (14) of these
water-bodies were predominantly phosphorous limited. Utah Lake near Provo,
Utah,remained phosphorous limited despite significant phosphorous input
from lakeshore sewage treatment plants and industrial activities; but,
eutrophy was mitigated by high natural turbidity. Three (3) of these
eighteen (18) were nitrogen limited, but had algal production intensified
by limited or no hydraulic flushing; namely, Barr Lake in Colorado,
Devils Lake in North Dakota and South Dakota's Madison Lake. The other
nitrogen limited waterbody was Koocanusa Lake in Montana with an N:P
ratio of 2:1. This lake is known to be impacted by inputs of dissolved
phosphorous from the Canadian arm and has recently been filled.
Among the non-NES STORE! data evaluated; five (5) lakes were believed
to be impacted by potentially significant point sources. These are;
Granby Lake (low quantity from Grand Lake) and Sterling Reservoir
(intensive, but far upstream sources) in Colorado; Oahe Lake (intensive,
but far upstream sources on the Cheyenne River) and Pocasse Lake in
South Dakota; and Stump Lake In North Dakota. (Pocasse and Stump Lakes
are also basically closed hydraulic systems.)
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CIEANUP PROGRAM.
Regional strategy has not been pointed to nutrient removal from
municipal or Industrial point sources. Exceptions have been support
of phosphorous removal from a few Colorado high country sewage treat-
ment plants, endorsement of total containment for certain lagoon systems
and a few industrial nitrate and phosphorous limitations.
Nutrient removal for critical waterbodies will be necessary on a
case-by-case basis for some waterbodies; such as, Pactola Reservoir in
South Dakota, and may require no additional nutrients or greatly decreased
loading in order to avoid algal nuisances and problems. Other waterbodies;
for example, Fremont Lake in Wyoming;which has a mean Secchi disc clarity
of nearly 50 feet, may require special efforts to retain this unique con-
dition.
Clean Lake applications designed to restore lakes, as provided by
Section 314 of Public Law 92-500, will require data comparable in scope
and detail to the NES data for proper assessment of the planned improve-
ment. Nutrient removal from municipal sewage wastewaters is not part of
the Clean Lake process. Except for unique circumstances, improved flush-
ing via augmented inflow, rerouting of selected nutrient rich Inflows
or management of lake and reservoir flushing; for example, by selective
draw-down, will be the prime means of lake cleanup.
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Rerouting of sewage wastewater by collection and conveyance
around water-bodies utilizing construction grant money should; In
special Instances such as Bear Lake in Utah, be encouraged outside
of the "Clean Lakes" program and Increased priority, as appropriate
to the lake or reservoir, should then be assigned to these projects.
SUMMARY,
A lack of significant point sources to most waterbodies in Region
VIII; along with a prevailing nitrogen limitation for 137 of 185 lakes
and reservoirs surveyed, does suggest a high "natural" background for
phosphorous or significant Input from non-point sources. For this reason,
non-point sources, once better identified and prioritized, should be the
main avenue of nutrient removal effort in Region VIII.
Some construction grant and permit action will be important for
certain waterbodies. Clean Lake grants may also be effective in
limiting nutrients to a few, well chosen waterbodies.
The availability of nitrogen and phosphorous data for only 185
lakes and reservoirs out of more than 2,300 significant waterbodies
Identified in the state program plans suggests the general need for
addltonal data collection.
At each of four (4) critical levels used to gauge eutrophic con-
ditions, seventy-two (72) percent of Region VIII's waterbodies with
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comprehensive nutrient data had median total phosphorous concentrations
of 0.025 mg/1 or greater; sixty-six (66) percent had a mean Secchi disc
depth of seventy-nine (79) Inches or less; fifty-one (51) percent had a
mean chlorophyll * level of 10 pg/1 or more; and fifty-seven (57) percent
had a minimum. DO of less than 5.0 mg/1.
i
A trophic summary using all available STORET data as assembled In
Table 9 Indicated, twenty-one (21) percent of these lakes and reservoirs
were ollgotrophic, seventeen (17) percent were mesotrophic; and overall,
sixty-seven (67) percent could expect eutrophlc related problems.
GRAPHIC OVERVIEW.
A visual display of the tabular data is giver In Figures 1 thru
6. These figures distill the lake and reserovir data and assessments for
each state Into a single visual aid. Trophic state from oligotrophlc to
eutrophic is illustrated by light to dark shaded areas around each water-
body, limed late data needs are Indicated by circles around these water-
bodies and suggested ongoing monitoring (at present few federal or state
programs routinely collect lake or reservoir data) is Indicated by
vertical lines surrounding the waterbody. Cleanup candidates are shown
by crosshatched lines intersecting the vertical lines. Intended uses for
fishing, swimming or culinary supply are also shown beneath each water-
body's name, if classified. Each Figure has the primary state and federal
monitoring stations located on it to provide further usefulness for these
graphics.
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LANDSAT photos In infrared color have been assembled for each state
to highlight general land use and drainage conditions relevant to the
major lakes and reservoirs In Region VIII. These photos are Identified
by Figures 7 thru 12 and suggest the areal predominance of reservoirs
on the mainstem of the Missouri and North Platte Rivers; numerous impound-
ments on the eastern Colorado slope of the Rocky Mountains; natural lakes
in the Flathead Mountains of Montana; Bear Lake, Utah Lake and the Great
Salt Lake in Utah; as well as the interstate waters of the Flaming Gorge
and Glen Canyon Reservoirs.
Projects of the Bureau of Reclamation will continue to shape or
reshape many of the waterbodles In Region VIII. Both the complexity and
enormity of the Bureau's Oahe (final planning) and Garrison (final con-
struction) diversion projects in South and North Dakota; respectively high-
lighted in Figures 13 and 14t suggest the potential effect of these diver-
sions on new and existing waterbodles. Also the Bureau's ambitious Central
Utah Project Illustrated 1n Figure 15 will create or reshape several water-
bodies in Utah. The short and long range effects of these and other
major projects will require ongoing review to reassess monitoring priorities
and the protection of Intended uses.
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*Table 1
LAKES AND RESERVOIRS WITH STORET DATA GAPS
A. Colorado
1. Sloans Lake - Denver County (A2)
2. Morrow Point Reservoir - Gunnison County (Bi)
3. Stand! ey Reservoir - Jefferson County (BS)
4. Chatfield - Jefferson County (Bl)
5. Wai den Reservoir - .Jackson County (B-j)
6. Boyd Lake - Larimer County (A2)
7, Love! and Lake - Larimer County (Ag)
8. Bonney Lake - Kit Carson County (A2)
9. Evergreen Lake - Jefferson County (B-j)
10. Monument Lake - Las Anlmas (BS)
11. South Platte drainage Reservoirs, Jackson (Bg), Prewitt {BS},
Empire (BS), Julesburg (Ba), Riverside Reservoir CBS), Weld,
Morgan, Logan, Washington, and Sedgwick Counties respectively.
12. Williams Fork Reservoir - Grand County
13. Lake Estes - Larimer County (BI)
14. Pueblo Reservoir - Pueblo County (BS)
15. Rio Grande Reservoir - San Juan County tBS)
A] - cold water fishable and swimmable
Ag - warm water fishable and swimmable
BI - cold water fishable
62 - warm water fishable
BS - Basic Standards and Free Froms
*These lakes and reservoirs may be added to the lakes of ongoing
Interest - Table 2, as data becomes available* Lake classifi-
cations of each state are given In parenthesis.
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B. MONTANA
1, Mystic Lake - Gallatin County (B
2. Frances Lake - Pondera County (B-Di)
3. Helena Lake - Lewis and Clark County (B-D])
6. Hauser Lake - Lewis and Clark County (B-Di)
7. Hungry Horse - Flathead County (B-Di)
8. Tiber Reservoir - Tooele and Liberty County (B-Dg)
9. Noxon Reservoir - Sanders County {B-D-|)
10. Cabinet Gorge Reservoir - Sanders County (B-Di)
11. Medicine Lake - Sheridan County (B-D2)
12. Fresno Reservoir - Hill County (6-03)
13. Deadmans Basin Reservoir - Wheatland County (6-02)
A-0, DI - cold water flshable and swimmable
B-Di - cold water fishable and swimmable
B-D2 - cold water fishable (marginal salmonid) and swinmable
B-D3 - fishable (non-salmonid) and swimmable
C, NORTH DAKOTA
1. Tschida Lake - Grant County
2. Long Lake - Burleigh and Kidder County
3. Des Lacs Lakes - Burke and Ward County
4. Arrowood Lakes - Stutsman County
5. Bowman Haley Reservoir - Bowman County
6. Patterson Lake - Stark County
7. Beaver Lake - Logan County
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C* NORTH DAKOTA fcont.l
8. Lostwood Lakes - Burke and Montrall County
9. Tewaukon Lake - Sisseton Reservation
(Lakes classified by exception: I - natural species flshable
and swImnabTe.)
D. SOUTH DAKOTA
1. Lewis and Clark Lake - Bon Homne and Yankton County (1,2,7,8*11)
2. Oglala Reservoir - Shannon County (3)
3. Mud Lake Reservoir - Brown County (5,8)
4. Belle Fourche Reservoir (Orman Reservoir) - Butte County (4,10)
5. Traverse Lake - Roberts County (4.10)
6. Willow Creek Reservoir - Browns County (1,5)
1 - drinking water supply
2 - cold water permanent flshable
3 - cold water - marginal fishable
4 - warm water permanent fishable
5 - warm water semi-permanent fishable
6 - warm water marginal fishable
7 - swlmmable
8 - limited contact recreation
9 - wildlife propagation and stock watering
10 - Irrigation water
11 - industrial
E. UTAH
1. Strawberry Reservoir - Wasatch County (CC/C)
2. Hyrum Reservoir - Cache County (CC/C)
3. Cutler Reservoir - Cache County (CM)
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E. UTAH (cont.)
4. Wanshlp Reservoir - Summit County (CC/C)
5. East Canyon Reservoir - Sufmlt County (CC/C)
C - fishable
CC - cold water fishable
CW - warm water fishable
R - swimmable
F. WYOMING
1. Jackson Lake - Teton County
2. Alcova Reservoir - Natrona County
3. Pathfinder Reservoir - Natrona County
4. Gurnsey Reservoir - Platte County
5, Wheatland Reservoir #2 - Albany County
6. Hattie Lake - Albany County
7. Bull Lake - Fremont County
Standards include temperature rise and fecal coliform
limits during the recreation season - some waterbodies
are classed "I" which corresponds to a higher D.O.
requirement.
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TABLE 2*
MAJOR LAKES OF ONGOING INTEREST IN PRIORITY ORDER
A. COLORADO
1* Three (3) lakes (Granby, Shadow Mountain and Grand Lakes) (Ai)
C, R, G, U, PH, 0 - Big Thompson Project
2. Dillon (AT) and Green Mountain Reservoirs (B5)
C, Rf G, PM, DW
3. Denver area - Sloans C (A2), Cherry Creek C (Ag). Chatfleld (,B1)
and Standley (BS) Reservoirs - R and some PI
i
4. Pueblo Reservoir (BS) - R, PH, PI, 0 - upstream mining DW
5, Mine drainage (LaJara (Bi), Platoro (Bi), Navajo; R, C (BS),
Standley (BS), Terrace (BS), San Cristobal (BS}» Vallecito (Bi),
Electra (BI), Williams Fork Reservoir (Bi) and others - some PI
6, Carter Reservoir - DW, R, 0 - Big Thompson Project (A-|)
7. Horsetooth Reservoir - DW, R, 0 - Big Thompson Project (A1))
8. Blue Mesa Reservoir - R, C
9. Turquols Lake - DW, R (BI)
10. Twin Lakes Reservlor - DW, R
11. Sterling Reservoir - G, PI, PM (82!
12. Two Buttes Reservoir - R, U
*Prior1ty for ongoing monitoring 1s made based on the relative
Importance based on recreational use, permit or grant action 1n
force, use as a direct drinking supply, Involvment In large
diversion projects, candidacy for cleanup, and/or unique and.
other factors. See last page of table for legend. (Letters and/or
numbers In parenthesis correspond to state use classification - See
Table 1 for this breakdown.)
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B. MONTANA
1, Flathead Lake - R, PM, G, C, 0 - Canadian Watershed and Canadian
coal development (A-0, DI)
2. Whiteflsh Lake - DW, PM, G, R, C (A-0,
3. Koocanusa Lake - R, C, 0 - Canadian watershed and phosphate sources
(B, DI)
4. McDonald Lake - I, C, R, G, PM (A-0, DI)
5. Canyon Ferry Reservoir - G, 0 - significant headwater problems
suspect (B, D])
6, Logging related (Mary Roonan (A-0, DI), Seeley (B, DI),
Swan (A-0, DI), Tally (B, DI) and others)
7. Energy related {Yellowtail (B, Di see Wyoming), Tongue River
(B. nz) and Fort Peck Reservoirs (B, 03) and others) — A Tongue
River Reservoir survey is planned as part of the energy program
and a 208.}
8. Mine related (Georgetown Reservoir (A-0, DI) and others)
9. St. Mary Lakes - R, U (A-0, D-|)
10. Tiber Reservoir - G, C (B, Dg)
Yellowtail Reservoir (B, D]) (See Wyoming)
C. NORTH DAKOTA
1. Sakakawea Reservoir - G, R, 0 - Irrigation development (I)
2. Darling Lake - C, R, 0 - Canadian watershed and wildlife area
plus lake expansion
3. Sweetwater Lake - C, R, 0 - Diversion impact
4. Ashtabula Lake - R, 0 - Diversion Impact
5. Metigoshe Lake - R, U, C, 0 - Eutrophic conditions may be worse
than NES indicated
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C. NORTH DAKOTA (cont.j
6. Pelican Lake - R, U, C
7. Devil's Lake - 6, PM, 0 - Diversion impact {closed basin)
8. Jamestown Reservoir (Jim Lake) - G. R, 0 - Agricultural
9. Cane" Reservoir - Rf 0 - Planned Diversion (I)
NOTE; Most lakes and reservoirs are not classified in North Dakota.
D. SOUTH DAKOTA
1. Oahe Reservoir - PI, DM, G, 0 - Planned Diversion (1, 2, 7, 8, 11)
2, Mitchell Lake - DW, G, R (1, 4)
3. Pactola Reservoir - G, PH. ft, C (1, 2, 10)
4. Angostura Reservoir - PM, R, C (1, 4, 10)
5. Kampeska Lake - DW, R, G, C (1, 4)
6. Francis Case Lake - DW, R, G, (1, 4, 7, 8, 11)
7. Lewis, and Clark Reservoir - DW, R (1, 4, 7, 8, 11)
8. Deerfield Lake - R, C (2)
9. Madison Lake - PM, R, G (closed basin) (5)
10. Byron Lake - 0 - Planned Diversion (5, 10)
IK Pocasse Lake - G, PM, C (5)
12. Mud Lake Reservoir - PM, G, R (5, 8)
13. Stockade Lake - 0 - Marginal cold water fishery (3)
14. Oglala Reservoir - 0 - Marginal cold water fishery (3)
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E. UTAH
1. Bear Lake - G, C, R (CCR)
2. Deer Creek Reservoir - DW, R, G» C, PM, PI, 0 - Water use
development (CC)
3. Powell Lake - R, 0 - Salinity and energy development (CCW)
4. Pineview Reservoir - DW, R, C (CC or C)
5. Strawberry Reservoir - C, DW, R, 0 - Water use development (CC)
6. Sevier Bridge Reservoir - R, C, PH (CW)
7. Echo Reservoir - PH, C (CC or C)
8. Fish Lake - C, R (CC or C)
9. Willard Bay Reservoir - PI, R (CW)
10. Utah Lake - PI, PM, R (CW)
Flaming Gorge (CCR) (See Wyoming)
F. WYOMING
1. Flaming Gorge Reservoir - R, C, G, 0 - Energy development (modeling
is planned as part of 208) and high nitrate
2. Yellowtail Reservoir (Bighorn Lake) - R, C, PI, 0 * Energy develop-
ment (semi-intensive survey planned by EPA Energy Office) and
irrigation diversion project
3. Yellowstone Lake - R, (I)
4. Buffalo Bill Reservoir - DW, R, U
5. Glendo Reservoir - PH, PI, R, C
6. Seminoe Reservoir - PI, R, C
7. Keyhole Reservoir - C, PH, 0 - Energy development
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F. WYOMING (cent.)
8. Palisades Reservoir - R, PM, G, C, 0 - Graze animals
9. Jackson Lake - R, (I)
10. Woodruff Narrows Reservoir - PM, G
11. Fontenelle Reservoir - R, 0 - Energy development
12. Pathfinder Reservoir - DW, R
13. Alcova Reservoir - DW, R
14. Fremont Lake - U, C
(Wyoming lake and reservoir standards require only certain limits
during the recreation season.)
DW - Drinking Water Supply
PI - Point Source Industrial
PM - Point Source Municipal
R - High Recreation Use
G - Significant Grant Involved
U - Uniqueness
C - Candidate for decreased nutrient input via tertiary
treatment and/or other grant activity and/or NPS controls
0 - Others
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COLORADO
TABLE 3
NES MJWARY
(legend on last page of table)
0 = ollgotcophlc
H = nesotrophic
E = eutrophlc
LAKE
CODE
0801
0802
0003
0804
0805
0806
0807
0808
0809
0810
OB11
'0812
e8.13-*
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3016
LAKE NAME
BARKER RESERVOIR (B1)
BARK LAKE ^ (8*)
BLUE MESA RESERVOIR (Bl)
CHERRY CREEK LAKE (A2)
CUCHARAS RESERVOIR (BS)
DILLON RES, P* (*1 )
GRAND LAKE PS Pi. (Al)
GREEN MOUNTAIN HES. PS (BS)
HOLBROOK LAKE (B2)
LAKE MEREDITH (BZ)
MILTON RESERVOIR (BS)
NAVAJO RESEKVOIR £61)
SHADUH MTN. LK. PS (Al )
IrtUTAUA ~" ii js. -t.
TROPHIC MEDIAN
STATE TOTAL P
(mm
M 0.023
E (U93 0
* 0.013
*'O.OIO
0.329
0.397
0.846
* 0.027
* 0.020
0.047
0.049
*0.006
0.022
0.022
* 0,045
O.C20
* 0.006
*O.C29
0*015
0*010
0.011
*J)_.018_
0.051
*o.ooe
MEDIAN
INORG N
(irg/l)
0.045
1.090
0.040
0.040
0.040
0.040
0.040
0.040
0.070
o.ao
2.280
0.120
0.040
0.170
0.160
0*050
0.040
0.040
0.100
0.040
0,160
0.075
0.040
0.050
0.050
0.18Q
0.050
0.040
500-
MEAN SEC
(Inches)
419*000
451.333
39S.750
469.333
490.000
181.750
366*500
391*167
490*333
489.667
429.333
436.316
427.000 +
442*800
398.750
267.833
367.333
367.700
337.643
371.091
190.667
456.750
362.657
282.750
339.167
44fl.SS5
474*111
290.000
MEAN
CHLORA
(M/D
S.333
28.767
6.817
23.322
27.400
3. ISO
4.900
5.833
111.933
164.678
5.900
2.168
5.700
5.816
2.375
1.273
6.983
4.083
2.669
4.673
0*467
7.233
2,171
3.289
2.083
2.806
16*878
1.400
15-
HIN DO
(mg/D
9.400
10.200
.13.800
10.000
14.800
9.200
10.200
9.100
9.000
10.400
9.200
11.200
9.200
14.400
12.000
9.000
10.200
13.80Q
10.400
14.200
6.400
11.400
13.200
9.600
9.200
J.600
13.600
7.000
MEDIAN INDEX "COMMENTS
DISS ORTHO P ND. (such as.approx. mean depth.and
/ ill years or dS&iDprpx.nydrauiIc
oW 24 «iBrtHH-
jum no yj^o&^eTY^X1 sample =
0.005 26 Deep =1007365 days avg.
*-°07 51 te^Hlll^lS?11^1
0.015 91 Shallow -20'
(0.002 J
10.003 1
CO. 002 }
0.028
0.098
ft. BOB
0,010
(0.003 I
0.029
0.027
0.011
0.020
>,044^
0.006
Co.oozJ
0.007
0.010
1 0*004 1
|0*004'~|
C0.004 }
0*008
1 0.003""j
6
14
12
85
104
84
41
16
79
55
5
28
34
40
25
9
49
20
13
11
33
66
1
475 days NES - Deep -100'
Veryddeep »150'
Deep =75 '/I 10 days avg.
Very shallow -10 '
Very shallow =10'
Shallow =20'
Deep =100' / 170 days avg.
Very shallow =10'
~167~dayrNES/18f 3ays~~avq., L
Deep 75' ' «>
332 days NES/ shallow 25'
318 (raldrarqe)
Very deep *>15Q'/77 days avg.
585 NES/564 days avg. /shallow 20'
155 NES/192 days/moderate -40' avdj
271 WES/235 days avg. /very de<>p
17.8 m, /avg ./shallow 25'
17.3 yrs. NES
8 days NES/660 days avg. /dee -lOfl
325 days avg. /Very shallow =H
127 days NES/130 days agg.
Moderate «40'
a§HfeH.H^'w days av9-/
no aerate =
-------
NORTH DAKOTA
LAKE
CODE
3801
3802
.3603
3804
3605
3806
3807
3808
3809
3811 •
3812
3613
3814
3815
SOUTH
4601
4602
4603
4604
4605
46k) 6
4607
4608
4609
4610
4611
4612
*613
4614
LAKE NAME
LAKE ASHTABULA PL
LAKE AUDU8QN ~
BRUSH LAKE -,_.... .
LAKE OAKLING
DEVILS LAKE PS
JAMESTOWN RES. Pu
LAKE LA HOURE
HATEJCEK LAKE
LAKE HETIGOSHE
PELICAN LAKE
~LK. SAKAKAWEA (GARRISON) I
SPIRIT WOOD LAKE PL
SWEET BRIAR RESERVOIR
WHITMAN LAKE
DAKOTA
LAKE ALBERT (6)
ALVIN LAKE (4)
ANGOSTURA RES- PS**{1 ,4,10)
BRANDT LAKE (5)
LAKE dYRON PL (B.1Q)
CLEAR LAKE (4)
CLEAR LAKE (6)
COCHRANE LAKE (4) C
COTTONWQOO LAKE (5)
OEERFIELD RESERVOIR (2)
ENEMY SWIM LAKE (4)
LAKE HERMAN (6)
ST JOHN LAKE (6)
LAKE KAMPESKA PL '(1,4) C
TROPHIC
STATE
E
E *
E
E *
E
E
E
E
Ht-t-f *
it* pt
u. . r +
II" p ti
H
E,
E
E
E
E
E
E *
E
E
E
M*-*£ *
E
E
E
E
MEDIAN
TOTAL P
(mg/r)
0.260
0.087
0.066
0.274
0.630
^^^^•MM,
0*144
0.438
0.238
0.032
0.034
0*016
0.156
0.092
0*260
0.321
0.067
0.019
0.194
0.443
0.027
A. 400
0.037
0.685
0.033
0.037
0.340
0.348
0.220
MEDIAN
INORG N
(nig/1)
0.160
0.220
0.095
0.250
0.140
0.365
0.380
0.440
0.080
0.070
0.150
0.290
0*090
0.260
0.170
0.160
0.130
0*370
0.075
0.270
0*150
0.265
0.060
0.065
0.155
0.080
0.105
500-
NEAN SEC
Cinches J
472.250
446.222
449.143 -
466.750
449.333
43B.667
421.400
475.167
369.167
364.500
408.733
417.633
440*600
478.333
489.111
442*633
423.333
432.833
488.333
430.167
495.333
446*000
490.333
303.333
442,600
485.000
469.400
468.389
MEAN
40.692
11.322
29.114
60.075
38.508
19,400
19.720
2.683
10.367
10.950
6.633
' 34.667
39.000
27.067
106.289
4.700
3.717
34.150
149.350
11.983
691*000
15.683
112.017
3.650
14.200
58.733
120.880
20.567
15-
MIN DO
("HP/I?
10.600
11.000
9.000
11.600
14.600
8.800
15.000
14.400
9.00Q
12*800
10.800
15.000
8.800
9.200
9*200
9.400
13.000
11.800
9.000
6. 800
7.000
15.000
8.600
15.000
a, 200
8*600
9*800
8*200
MEDIAN
DISS ORTHO P
Cmg/D
0.170
f 0,015 )
0.010
o.iao
0.469
0.078
0.290
0*179
0.010
1 0.006 3
CO. 007 J
0.062
0.031
0.165
0.019
C0.017 J
CO. 005 )
0.113
0.146
0.009
0.46B
CO. 006 )
0.417
0.022 -
0.013
a. 174
0.025
0.128
INDEX
HO.
403
77
58
m
112
78
107
100
31
37
39
98
62
97
96
61
3B
87
109
32
106
70
105
45
43
95
93
71
COMMENTS
304 days HES/ShaUtrw =20'
Shallow -20'
Shallow -15'
510 days NES/Stiallow -15'
Shallow "20 '
610 days a vg.',/ Shallow =20'
Shallow »20'
236 days NES/Shallow -20'
Shallow «20 ' representativeness
chatlengea-eutrophlc state seen
Shallow -10' •* wopse*
490 days avg./585 days NES
Very deep -T5D'
23.9 yrs. NES/Shallow =25*
183 days NES/Very Shallow =15* ,
255 days HES/Very shallow =15' ?
8.6 yrs. NES/Very shallow <*10'
294 days NES/Very shallow <-10"
79 days NES/ 420 days avg..
Moderate =40 '
Very Shallow «10'
12 yrs. HES/Very Shallow =10'
Very Shallow -10'
Very Shallow =10'
Very Shallow =10'
32 days NES/Very Shallow =10
500 davs, avg. /300 days NES,
Shallow slO1
1170 days HES/Very Shallow *-10'
1160 days NES/Very Shallow -10'
No outflow year of stuoy/
Very shallow =10'
-------
SOUTH DAKOTA
LAKE
CODE
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
462S
4626
4627
4628
4629
4630
4631
4901
4902
4903
4904
4905
4906
4907
490 B
4909
4910
4911
TROPHIC MED I AN
LAKE NAME STATE TOTAL P
MADISON LAKE PS PL. (5) E 0.250
LAKE MITCHELL PL (1,4) E 0.099
LAKE NORDEN (5) E 0.256
OAKriOQO LAKE EAST (6) C E 0.146
OAK400U LAKE nfEST (5) C E fr.lBl
PACTOLA RES PS (1,2,10) 0 * Q.OU
PICKEREL LAKE (4} E 0.049
LAKE POINSETT PL E 0.115
LAKE RED IRON SOUTH (4) H*-*E 0.042
RICHMOND LAKE (4) E 0.187
ROY LAKE (A) E 0.034
SAND LAKE (6) E 0.489
SHERIDAN LAKE (2) c E 0.053
STOCKADE LAKE (3} E 0.233
LAKE VERMILLION (4) E 0.211
WALL LAKE (5) E 0*194
WAUBAY LAKE NORTH (6) E 0.098
BEAR LAKE PL (CCR) 0 * Q.011
LOw£R HOWN'S KES (CC or C) M * 0.031
DEER CREEK RES. PS (CC tr C) E 0.036
ECHO RESERVOIR (CC or C) E * 0.047
LTNN RESERVOIH (CC or C) E 0.121
FISH LAKE (CC or C) M * 0.023
HUNUNfiTON NORTH frfcS (CC OP C) M 0*013
JOE'S VALLEY RES (CC Of C) 0 0.012
MINERSVILLE RES (CC or C) E Q.m
MOON LAKE (CC or C} O^ 0*008
NAVAJO LAKE {CC or C) 0 Q.Olfe
MEDIAN 500- MEAN IS- MEDIAN 1MEX
1NOR6 N MEAN SEC CHLORA MIN DO OISS.OftTHO P N°- COMMENTS
(mg/1) finches) Tug/1) (mg/t) (mg/lj
0.090 445.555 22.578 14.000 0.107 -90 10,7 yr9. NES/Very Shallow -10'
0.085 465.833 -14.883 13*800 0.015 81 134 days HES/ Shallow =20'
0.165 488.667 46.800 10*000 0*050 101 Very Shallow =10'
0,175 467.000 113.600 10.000 (0.009 > 88 Very Shallow =10'
0.135 485.833 159.667 9.600 0.021 89 Very Shallow =10'
0*0/0 248.444 1.478 11.000 1 0.006 1 17 .3.10 daVS/NES/Oeep "100 '
i^^— »j luZa days avg.
0.095 439*833 1S.B33 9.600 0.009 53 Shallow -20'"
0.315 468,444 40.211 10.000 0.023 92 NOwOOtfloW year of Study
Very shallow =iu
0.110 430.333 6.883 7.600 0.010 36 Very Shallow =10'
0.150 410.000 18.467 10*000 0.144 74 52 yrs. HES/ Shallow «20'
0.070 431,000 13.333 11.000 0.010 50 Shallow =20'
0.110 47U80Q 65.790 12.800 0.288 108 11 days NES/Very Shallow elO1
0.105 394.000 15.433 15,000 0.016 67 'Moderate «40'/40 yrs. HES
0,150 432.000 25.400 15.000 0*109 99 282 days HES/Shal low «25l ,
0.100 472*833 100.800 9.200 0.092 86 1020 days/NES/Shallow =15' ^
0.160 441.667 55.267 7.400 [1. 076 76 No outflow year Of study/
Very shallow *10'
0.145 469.555 127.033 11.400 0,023 •. 94 Very shallow =10'
0.040 304.905 0*805 10.000 10.003 I 7 23,1 yrs, NES/Qutf low i
*——* controlled oy UrL/iieep
0.040 336.000 S.S67 9.400 0.006 18 Very Shallow =15'
0.215 430.333 9.078 14.800 CO*QQ6 ) 63 & drfg$|r stoTSe/&eep
0.170 450*333 6.967 14.000 Co.012 ) 73 135 days NES /Moderate «
0,200 417.667 39.600 10.400 0.052 83 Shallow =20'
0.040 152.000 12.483 10.400 1 0.004™! 21 5B.7 yrs. HEVWOWrate
0*040 392.000 1.900 7,800 0.005 10 IballOVf «20'
0.045 400.000 2.483 11.200 CO. 003 ') 19 318 days.HE5/3W days
.W*
=7!'"
40'
=75'
avg.
Deep =100
0.060 445.000 33.583 8,600 0,10^ 65 269 days NES '/Shallow =20'
0.040 381.000 2.700 9.600
-------
UTAH
LAKE
CODE
4912
4913
_4914_.
4915
, .£. „.
4916
4917
4913
4919
.4.920
4921
4922
4923
4924
4925
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
1
LAKE NAHE
NEWCASTLE RESi (CC or «) .
OTTER" CREEK" RES~ Tec or c)
_PANQUlT.CH_LAKE_.(CC.Or C)
PELICAN LAKE (CH)
j . '.,,
PINEVIEU HES- (CC OF C)
PIUTE RESERVOIR (CC or C}
PORCUPINE RES (CC or C)
PftUESS RESERVOIR (CW)
SEV1EB0BRIDGE RES. PS
STAkVATION RES. (CC or C)
STE1N4KER RES. (CC Or C)
TROPIC RESERVOIR (CC or C}
UTAH LAKE PS PL (CH or C)
KILLARP BAT RESERVOIR (CH)
BIG SftMDY RESERVOIR
BOULOE9 LAKE
BOYSEN RESEKVOIrt
LAKE DE SMET
FLAMING GOftG£ k£S ?
FRFHONT LAKE
GLENDO RES ps
KEY HOLE ftES, PS
OCEAN LAKE
SEMJ MOLE RESERVOIR
SODA LAKE
VIVA NAUGHTON RES
tfOODRUFF NARROWS RES
YELLOWTAIL RES, PS
•ROPHK
STATE
, E
E
E
E
E
M~E
M* *E
E
M
0-H
K
E
E
E
0
E
H**E
M**E
0
E
E
M*-+£
M*+E
H**E
E
E
M
: MEDIAN
TOTAL P
(mg/1 )
0.051
0.067
0.071
0.044
* 0.028
0.047
0.025
0.057
* 0.026
0.016
0.011
0.021
0.131
0.044
0.087
0.008
0.037
* 0.033
*0.0l4
*0.006
* 0.045
* 0.026
0*043
* 0.030
0*063
0.065
0.069
* 0.026
MEDIAN
INORG N
(mg/D
0.040
0.040
0.040
0.050
0.300
_^___
0.150
0.110,
0.140
0.355
0*040
0.040
0.050
0.330
0.060
0.060
O.Q40
0.140
0.040
0*605
0.040
0.320
0.050
0.040
0.130
0.040
0.110
0.105
0.310
500-
HEAN SEC
(Inches)
428.667
453.667
426.500
438.500
435*083
482.625
440.000
491.000
449.778
394.583
316.750
425.000
490.583
457.182
487.667
361.600
465.923
409.000
385.120
-22.000
459.182
454.583
478.333
447.000
387.500
430.000
470.000
364.500
MEAN
CHLORA
(t.g/1 )
12*467
11*767
45,950
6.350
5.692
25.329
7.860
4*533
18.222
5.675
1.044
7.200
72.012
7.567
4.383
2.483
6.264
11.167
5.611
3,783
6.473
7.792
7.50C
2.536
5.575
25*067
12.950
5.410
15-
MIN DO
Ong/D
13.600
10.600
14.200
9,600
14.600
11.600
12.400
8*800
12.400
13.200
12.600
8.400
11.400
13*000
8.600
8.400
14.400
9.400
. 12.200
7.400
12.600
14.000
8.600
11.000
15.000
13.200
13.200
10.000
MEDIAN
DISS ORTHO P
(mfl/D
0.009
ft. 033
0*010
1 0.004 I
C0.006J
C0.007 }
0.011
C0.008J
C0.008J
1 0.00~4~l
0.005
0*006
CO. 012 3
0.009
0*020
C0*002^)
0*014
0*006
C0.003J
CO. 002 3
co*oi4 )
^0. 004 1
| 0.004 1
CO* 007 )
0.014
0.024
0.019
C0.017J
INDEX
NO.
48
60
64
30
59
72
56
54
ee
23
15
22
102
57
52
3
69
27
3!
2
80
47
29
42
46
75
82
44
COMMENTS
Shallow =20'
510 days NES/Shallow *20'
800 days NES/Shallow «20'
Very Shhllow "101
249 days NES/535 days avg
Shallow «20'
239 Hays JjES/Hol dtwer storage
Deep =75'
Very Shallow =10'
620 days HES/Moderate— 40 '
660 days NES/220 days avg
Moderate «50^
185 days (avg)/HoldQver storage
rQDaBrflttf *9U
56 days (avg)/Shallow «20'
950 days NES/Very Shallow «10'
Long term holdover storage/ ^
Shallow «207220 days ^avg T*
550 days (avg)/Modefife"^Ol
Deep si 00'
145 days - 200 days .avg'
Deep =100'
Moderate =40'
160 days (avg)/Long holdover
«tnraa»/1/pi"v apffi =2(1(1
Deep >*100'
Moderate -40 71 10 days «vg.
7.3 yrs avgj/Shallow =10'
Shallow -20'
Deep "1 00 7265 days avg.
Deep =75'
Moderate =40'
30 days avg, /Shallow =20'
135 day* avg /Very deep "150
-------
BORDERING REGION LAKE DATA
LAKE
CODE LAKE NAME
04dff Lake TPowell ^Jtah
(Utah - Arizona) (CCW)
1610 Palisade Reservoir
(Kyomlng - Idaho)
2709 Big Stone Lake s.D.
(S.O. - Minnesota) (4.10)
TROPHIC MEDIAN MEDIAN 500- MEAN
STATE TOTAL P INOR6 H MEAN SEC CHLORA
(mg/1) (mg/1) (Inches) (ug/l)
M 0.010 0.410 339.B30 3.081
M * 0.032 0.040 422,000 3.533
E 0.159 0.335 460.4 16.5
15- MEDIAN INDEX
HIM DO DISS ORTHO P HO. (1) COMMENTS
13.8 t 0.007 ) 39 Verv deep =200'
8.8 I 0,007 20 Very deep* 150'
620 day NESf —
9.0 0.126 103 Very Shallow -10'
(1) Index number 1s calculated on tiow these lakes would rate among 112 Region VIII
Underlining 1s for
Index number = Best
Limited phosphorous
highlighting.
(1) to Worst (112) trophic conditions 1n Region VIII.
conditions are circled.
Nearly limited phosphorous conditions are boxed.
lakes.
Letters or numbers In parent Indicate state use
classifications - See Table 1 fpr a breakdown for each state
PS = Potentially significant point sources.
"C = Applied for clean lake grant.
PL = "Problem lakes 1n tee U.S. - 1971".
* = Cleanup candidate u determined by this study. E
** <= Detention time for the year of the "NES" survey or
as catenated f rom long term dBta~bythe Bureau of
Reclamation, U.S. Geological Survey or U.S, Environ-
-------
COLORADO
TABLE 4 Non-NES
Lake (Reservoir) Trophic Assessment
(Legend on last page of table)
Lake/Location/Station
(If appropriate)
Anderson Reservoir
#1 USGS (Bl)
sAntero Reservoir
USGS Listing (Bl)
Antero Reservoir - below
at South Platte River
21CODBWC 001102 (Bl)
Avery Lake . .
USGS (Bl )
Bortham Reservoir
USGS (Bl )
Carter Lake , .
112WRD 06742500 W)
Cheesman Reservoir
112WRD 06701000 (BS)
Cheesman Reservoir- be low
at South Platte River
21CODBHC 001109 (BS)
Continental Reservoir
USGS (Bl)
Cottonwood Lake #1
West Basin USGS (Bl)
Cottonwood Lake 11
East Basin USGS (Bl)
Crawford Reservoir
USGS 384142107354400 (Bl)
Trophic
State
M«-»0
E-H*M
0~M
O^H
E«->M
ru-»M
U* *n
E++M
rv. »M
v*^n
M«-*E
Mean
Hydr.
Ret.
(Days)
-
-
-
-
-
365
-
-
-
-
Tot,
P
mg/1
-
-
0.120
-
-
0.250
-
0.130
-
-
-
-
Nutrients
Diss.
P
mg/1
0.010
0.025
-
0.060
0.025
0.013
0.030
-
0.040
0.050
0,030
0.030
Total
N03-N
mq/1
0
0,025
0.037
0.010
0.60
0.220
0.020
0.100
0.005
0.003
0.0
0.130
*
N.: P
<1
1
-
<1
3
©
1
-
<1
<1
<1
4
Secchi
Disc.
(in.)
98
59
-
138
145
98
216
-
24
135
157
132
Comments on biological data,
NPS sources, etc.
One sample = 2,000 cells/ml
Very shallow 10'
One sample = 1,000 cells/ml.
Very shallow =10'
One sample = 10,000 cells/ml
Moderate =60'
One sample = 580 cells/ml
Shallow =20' i,
One sample = 68 cells/ml t!
Deep =100' CND
UnC Sample " HjDUU Cc 1 15/1111
Deep =100'
One sample - 55,000 cells/ml
Shallow =20'
Two samples = 17,000 cells/ml avg.
Moderate =40'
One sample = 11,000 cells/ml
Shallow -25'
Moderate =100'
-------
COLORADO
TABLE 4
Lake (Reservoirj Trophic Assessment
Lake/Location/Station
(If appropriate)
Delaney Lake South
USGS 4042081 06272000 (Bl)
Delaney Lake East (Bl)
USGS 404242106265900
Delaney Lake North (Bl)
USGS 404245106275900
Electra Lake,
USGS (Bl )
Eleven H1le Reservoir
1T2WRD 06695500 (Bl)
Eleven Mile Reservoir (Bl]
below at South Platte
River 21CODBWC 001106
Garnet Mesa Reservoir (A21
(Sweltzer Lake) USGS
firandby Lake
112WRD 09018500 (Al ) EL
Gran by Lake - Below on
Colorado River
112WRD 09019000 (A1>
Gross Reservoir
USGS (Bl)
Gross Reservoir - below
at Boulder Creek
21COOBWC 003103 (Bl)
Trophic
State
M*-»0
0«-»M
0«-*M
M~G
0+*M
n* ..M
U«-»M
Mean
Hydr.
Ret.
(Days)
-
-
-
-
-
-
-
400
-
-
-
Tot.
P
mg/1
-
-
-
-
-
0.070.
-
-
-
-
0.060
Nutrients
Diss.
P
mg/1
0.015
0.010
0.010
0.050
0.016
-
0.020
0.005
0.010
0.015
-
Total
N03-N
mg/1
o.oin
0
0
1.100
0.100
0.100
0.020
0.050
0.140
0.020
0.080
*
N : P
<1
<1
:1
vv
6
-
1
10
(i*)
i
-
Seech i
Disc.
(in.)
156
60
168
212
138
-
59
118
-
178
-
Comments on biological data,
NPS sources, etc.
Shallow =20'
Shallow =20'
One sample = 130,000 cells/nil
Shallow =30'
Significant NDS source suggested
One sample = 10,000 cells/ml
Shallow =30'
Hna camnl0 ~ 9fin f-e^\ 1 c /ml ^
uric sample tuu cc I ib/mi m
Deep s=!00( '
One sample = 1,200 cells/ml
Shallow =20'
One sample = 6,600 cells/ml
Deep =100'
One sample * 1,200 cells/ml
riaan ~1 f\f\ '
ueep =iuu
CND
-------
COLORADO
TABLE 4
Lake (Reservoir) Trophic Assessment
Lake/Location/Station
(If appropriate)
Harrlman Lake
21CQDBWC 004202 (BS)
Horsetooth Reservoir
112WRD 06737500 (Al)
Irene Lake
USGS (B11
John Lake (Bl)
USGS 404729106283700
John Martin Reservoir -
Below on Arkansas River
112WRD 07130500 (82)
LaJara Reservoir
USGS (81)
Lemon Reservoir
USGS (B1 )
Neenoshe Reservoir
USGS (B2)
Paonia Reservoir
385654107211800 (Bl)
Platoro Reservoir
USGS (Bl)
Platte Canyon Reservoir
at South Platte River
21CODBWC DOT 302 (BS)
Trophic
State
-
M^-E
-
M+-K)
E+->M
E«-»M
M+-K)
E->M
H^-E
Q-t-»M
-
Mean
Hydr.
Ret.
lOays)
-
325
-
-
-
-
220
-
-
-
-
Nutrients
Tot.
P
tng/1
0.062
0.026
-
-
-
-
-
-
-
0,050
Diss.
P
rag/1
-
0.038
0
0.010
0.021
0,060
0.005
0.025
0.015
0.010
-
Total
N03-N
mg/1
0.220
0,370
0.025
0.045
1.100
0.330
0.005
0.005
0.095
0.005
0.080
*
H :P
-
10
<1
4
VV
6
1
<1
6
<1
-
Seech i
Disc,
(in,)
-
-
-
100
-
7
no
31
72
no
-
Comments on biological data,
NPS sources, etc.
N/A
Two algae samples = 110 cells/ml CND
Deep =100'
N/A
Shallow =10'
Significant NDS suggested
Irrigation reservoir
CND
One sample = 23,000 cells/ml w
Shallow =20' ™
One sample = 2,700 cells/ml
Deep =100'
One sample = 59,000 plankton cells/ml
Shallow =20'
One sample = 2,300 cells/ml
Moderate *125'
Rio Grande compact requires release to
match inflow - Moderate =50'
One sample - 870 cells/ml
N/A
-------
COLORADO
TABLE 4
Lake (Reservoir) Trophic Assessment
Lake/Location/Station
(If appropriate)
Ralston Reservoir
USGS (BS)
Ralston Reservoir - below
at outlet 21CODBWC 003202
Rifle Gap Reservoir PS
393734107452700 (Bl)
Ruedi Reservoir
USGS (Bl )
San Cristobal Lake
USGS (BS)
San Luis Lake
USGS (bl }
Steamboat Lake
-------
COLORADO
TABLE 4
Lake (Reservoir) Trophic Assessment
Lake/Location/Station
Jlf appropriate)
Twin Lakes Reservoir (Bl)
East Basin 112WRO 0708S40C
Twin Lakes Reservoir (Bl)
West Basin 112HRD 0708540(
Two Buttes Reservoir
USGS (B2)
Vail eel to Reservoir
112WRD 09353000 (Bl)
Vega Reservoir
11 2WRD 09096100 (Bl)
Willow Creek Reservoir
USGS (Bl)
Trophic
State
n* »M
U*-n"i
E^H
(K-*«
E«-»M
0~H
Mean
Hydr.
Ret.
(Days)
-
-
-
135
300
60
Tot,
P
iag/1
-
-
-
-
-
-
Nutrients
Diss.
P
ing/1
0.015
0.015
0.030
0.010
0.120
0.015
Total
N03-N
mq/1
0.027
0,030
0.085
0.015
0
0.015
*
N :P
2
2
3
1
<1
1
Seech i
Disc.
(in.)
178
166
24
161
98
178
Comments on biological data,
MRS sources, etc.
One algae = 130 cells/ml
Moderate =50'
One sample = 470 cells/ml
Moderate =75'
One sample = 1,800 cells/ml
Shallow ~?0'
One sample = 4,200 cells/ml
Moderate =50' Signiflcent NFS suggested
One sample = 36,000 cells/ml
Deep -100'
One sample = 1,800 cells'/ml
Deep =100' jj
-------
MONTANA
TABLE 4
Lake [Reservoir) Trophic Assessment
Lake/Locati on/Stati on
(If appropriate)
Frazier Reservoir - Outle't
112WRD 06175400 (B-D3)
Ft» Peck Reservoir near
Pines U3g£CE 293004
Ft. Peck Reservoir below
on Missouri River
112URD 06132000 (B-D3)
Ft, Peck Reservoir below
on Missouri River (B-D3)
121MBRCE 293003
Madison Reservoir - below
on Madison River
21 MTDHWQ 304107 (B-D1)
Ruby River Reservoir -
below on Ruby River
21MTHDWQ 304112 (B-D1)
Trophic
State
M*+E
0+->M
•I
-
-
Mean
Hydr.
Ret.
(Days)
-
500
500
500
-
40
Tot.
P
•g/i
0.057
0.026
0.019
0.025
0.027
0.015
Nutrients
Diss.
P
rag/1
0.050
-
-
0.009.
-
-
Total
N03-N
mg/1
0.040
0.100
0.020
0.110
0.050
0.090
*
N :P
1
-
-
12
-
-
Seech i
Disc.
(in.)
-
-
-
-
-
-
Comments on biological data,
NPS sources, etc.
-
One sample = 534 celts/ml
EPA study shows eutrophic conditions ,
69-71 Jg
N/A
N/A
-------
NORTH DAKOTA
TABLE 4
Lake (Reservoir) Trophic Assessment
Lake/Location/Station
(If appropriate)
Honwne Reservoir - below
on Park River (South
Branch) 112WRD 05089000
Lake Alice near Church's
Ferry 112WRD 05056250
Lake Irvine near Church's
Ferry 112WRD 05056260
Stamp Lake - East PS
112WRD 05056630
Stump Lake - West p$
112WRD 05056670
Sweetwater Lake at
Sweetwater
112WRD 05056220
Trophic
State
E~M
E*^M
£•*-*
r*-tM
L*^Vl
E-i->M
Mean
Hydr,
Ret.
(Days)
32
-
-
-
Tot,
P
mg/1
i
-
-
-
-
-
Nutrients
Diss.
P
rcg/1
0.084
0.260
0.180
0.840
0.460
o.no
Total
N03-N
mg/1
0.500
0.410
0.520
0,100
0.600
0,250
*
N • P
6
2
3
<1
1
2
Secchl
Disc.
(in.)
-
-
-
-
-
-
Comments on biological data,
NPS sources, etc.
-
-
-
C*J
o
-------
SOUTH DAKOTA
TABLE 4
Lake (Reservoir) Trophic Assessment
Lake/Location/Station
(If appropriate)
Big Bend Reservoir (Sharp
Lake) - outfall
121MBRCE 460005 (1,2.7,8,
Columbia Road Reservoir
Outlet 1117 MBR (f>,8)
Francis Case Lake
(Ft. Randall Reservoir)
below at Missouri River
112WRD 06453000(1,4,7,8,1
Ft. Randall Reservoir -
outfall 121MBRCE 460001
Oahe Lake - Mobridge
121MBRCE 460012 (1,2,7.8,
Oahe Lake - at outfall
121MBRCE 460008
Pocasse Lake PS
121MBRCE 460062 {5}
Shade H111 Reservoir
112WRD 06357000 (4,10)
~v
Trophic
State
Q*-*M
11)
E++M
1)0-41
ID
tlt-M
-
E«-»fl
Mean
Hydr.
Ret.
(Days)
5.5
-
80
80
340
340
-
860
Tot.
P
mg/1
0.010
0.459
0.017
0.010
0.027
0.006
0,240
40
Nutrients
Diss.
P
rag/1
0.010
0.113
-
0,006
-
0.006
-
10
Total
N03-N
mg/1
0.200
0.050
0.150
0.200
0.190
0.330
0.500
150
*
N :P
20
<1
-
(33)
-
vv
-
(j?)
Secchi
Disc.
(in.)
-
-
-
-
-
-
-
-
Comments on biological data,
NPS sources, etc.
-
-
One sample = 2,900 cells/ml and
1/ug/l chlor,a
CND
•
to
CND T
N/A
-
-------
TABLE 4
UTAH
Lake (Reservoir) Trophic Assessment
Lake/Location/Station
• [If appropriate)
Mona Reservoir - outlet
at Current Creek
31UTLINK 331090 CW
Trial Lake - outlet to
Washington Lake ps
21UTAH 491656 CC or C
Washington Lake - outlet
to Provo Lake
21UTAH 491657 CC or C
*
Trophic
State
^
O-M
"-
Mean
Hydr.
Ret.
(Days)
-
-
-
Nutrients
Tot.
P
ng/1
-
-
-
Diss.
P
mg/1
0.200
0.012
0.024
Total
N03-N
mg/1
183
0.050
0.150
*
N :P
1
4
6
Seech i
Disc.
(in.)
-
-
-
Comments on biological data.
NP5 sources, etc.
-
-
-
ro
-------
WYOMING
TABLE 4
Lake (Reservoir) Trophic Assessment
Lake/Locati on/Sta ti on
(If appropriate)
Alcova Reservoir - below '
at North Platte River
112WRD 06642000
Buffalo 6111 Reservoir -
below at Shostione River
112WRD 06282000
Duck Lake
1117MBR 571027
Fontenells Reservoir -
below at Green River
112WRD 09211200
Guernsey Reservoir - below
at North Platte River
112WRD 06656000
Heart Lake
1117MBR 571992
Lewis Lake
1117MBR
Shoshone Lake
1117HBR 571993
Sylvan Lake
1117MBR 571043
Yellowstone Lake -
Several stations
1117MBR
Trophic
State
-
-
M+*0
-
M~E
H^>0
M«-vE
M**0
M~0
Mean
Hydr,
Ret.
(Days)
40
1060
or '
less
75
zero
flow
thru
-
-
-
-
-
Nutrients
Tot.
P
mg/1
0.082
3.038
0.040
0.007
0.016
0.060
0.080
0.060
0.050
0.060
Diss.
P
mg/1
-
-
0.012
-
-
0.040
0.007
0.040
0.012
0.024
Total
N03-N
mg/1
0.130
0.091
<0.015
0.080
0.250
<0.015
<0.060
<0.010
<0.025
<0.025
*
N • P
-
-
«1
-
-
<1
<1
<1
-2
=1
Seech i
Disc,
(in.)
-
-
-
-
-
-
-
-
-
-
Comments on biological data t
NPS sources, etc.
CND
N/A
CND
N/A
-
CND
N/A
CND ^
N/A r
-
-
-
-
CND
Phosphorous Limited Condition 1s circled. CND " Comprehensive nutrient data (non-NES).
*Rat1o of dissolved phosphorous to total inorganic nitrogen. N'A * No assessable data.
PL = Problem Lakes in the U.S.-1971. 9 I BUSSjJjJRM6 E = Eutrophlc
Letter and/or numbers In parenthesis indicate state ^ e sfjjiflfcant point source potential.
use classification (See Table 1 for a breakdown of these uses).
-------
COLORADO
TABLE 5 NFS Supplementary
Lake (Reservolr) Trophic Assessment
{Legend on last page of table)
Lake/Locati on/Stati on
(If appropriate)
Barr Lake fa %
395730104451700
Blue Mesa Reservoir
USGS
Dillon Reservoir PS
112WRD 09050600
Dillon Reservoir - below
on South Platte River
21CODBUC 002400
Grand Lake 05
112WRD 09013900
Meredith Lake
USGS
Navajo Reservoir
USGS 370000107383800
Shadow Mountain PL
Reservoir 112WRD 09014500
Trophic
State
E+-»M
0~M
ru-»M- ,
04-»M
W«€
M~E
M4->0
Mean
Hydr.
Ret.
(Days)
-
-
-
-
-
-
-
-
Tot.
P
ing/1
-
-
-
0.050
-
-
-
0.020
Nutrients
Diss.
P
mg/1
1.100
0.015
0.050
-
0.015
0.020
0.010
0.025
Total
N03-N
mg/i
0.135
0.050
0.120
0.080
0.005
0
0.060
0.071
*
NJ:P
<1
3
2
-
<1
<1
6
3
Secchi
Disc.
(in.)
21
150
216
-
98
10
24-
79
Comments on biological data,
NPS sources, etc.
One sample = 75,000 cells/ml
One sample = 170,000 cells/ml
Rated E in NES
One sample = 760 cells/ml
Rated M In NES
One sample = 510 cells/ml
HafoH n in NP^
i\(t t>cu u in MC.O
CND
One sample = 6,400 cells/ml i
Rated M 1n NES *
One sample = 300,000 eel Is /ml
Irrigation Res. Rated E in NES
One sample = 1,200 cells/ml
Rated H^-E in NES
One sample - 650 cells/ml
Rated M in NES
-------
MONTANA
TABLE 5
Lake (Reservoir) Trophic Assessment
Lake/Location/Station
{If appropriate)
Canyon Ferry Reservoir -
below on Missouri River
112WRD 06058502
Clark Canyon Reservoir
below on Beaver Creek
21MTDHWQ 304103
Flathead Lake
112WRD 12371550 PS
Koocanusa Lake at Plnkham
Creek 112WRD 12301600
t
Koocanusa Lake at Ten
Mile Creek 112WRO 12301830
Koocanusa Lake at Forebay
near Llbby 112WRD 12301919
Koocanusa Lake at PS
International
112WRO 12300110
Trophic
State
H^O
M«-»E
M~0
M*-E
Mean
Hydr.
Ret.
(Days)
-
-
-
-
-
-
-
Tot.
P
Kg/1
-
0.030
0.036
0.037
0.042
0.038
0.035
Nutrients
Diss.
P
mg/1
0.019
-
0.013
0.026
0.026
0.01S
0.013
Total
N03-N
mg/1
0.100
0.060
0.052
0.072
0,064
0.061
0.023
*
N :P
6
-
4
3
3
4
2
Secchi
Disc*
(in.)
-
-
-
-
-
w
-
Comments on biological data,
NFS sources, etc.
Rated E in NES
CND
Rated H**E 1n NES
N/A
Clean lake candidate
Rated 0 in NES
Mean chlor.a = 0.6 yg/1 CND
High algae = 3,400 cells/ml
Mean chlor.a = 0.6 ug/1 CND
High algae = 22,000 cells/ml Y1
Mean chlor.a = 0.4 pg/1 CND
High algae = 7,000 cells/ml
Mean chlor.a =0.8 yg/1 CND
One algae sample =
Rated M in NES
-------
NORTH DAKOTA
Lake (Reservoir) Trophic Assessment
Lake/Location/Station
(If appropriate)
Ashtabula Lake - below
on Sheyenne River PL
112WRD 05058000
Devils Lake PS
Numerous 112 HRD Stations
Jamestown Reservoir PL
112NRD 06469000
Sakakawea Lake - below on
Missouri River
112WRD 06338490
Sakakawea Lake - below on
Missouri River
121MBRCE 370002
Sakakawea Lake - Newtown
121MBRCE 370004
-
^
Trophic
State
E++M
E-^H
E++M
04 »M
Mean
Hydr.
Ret.
(Days)
-
-
-
-
Tot.
P
wg/1
"
-
-
-
0.027
0.015
0.010
Nutrients
Diss.
P
og/1
0.140
0.523
0.118
-
0.006
Total
Mh-N
mg/1
0.500
0.242
0.310
150
0.330
0.190
©
*
N : P
4
<'
3
-
,
Secchl
Disc.
(in.)
-
-
-
-
Comments on biological data,
NPS sources, etc.
Rated E In NES
Blue-green algae blooms noted
Rated E In NES
Blue-qreen algae blooms noted
Rated' E In NES
t
i
Rated M in NES
CND
-------
SOUTH DAKOTA
TABLE 5
Lake (Reservoir) Trophic Assessment
Lake/Location/Station
(If appropriate)
Angostura Reservoir -
below at Cheyenne River
112WRD 06401500
Angostura Reservoir
31BLHICD AGE
84 g Stone Lake PL
21 SDAK01 46B5L1
Byron Lake - below at
James River 1117 MBR
Pactola Reservoir - below
at Rapid Creek
112WRD 06411500
Pactola Reservoir - below
at Rapid Creek
21 SDAKQ1 460920
Trophic
State
H*~^E
E-H»«
E-^M
M+-K)
Mean
Hydr.
Ret.
JOays)
-
-
-
-
-
-
Tot.
P
mg/1
33
23
-
0.498
0.033
-
Nutrients
Diss.
P
ng/1
15
100
0,048
0.247
0.012
0.032
Total
N03-N
mg/1
220
200
0.100
0.050
0.067
0.330
*
N :P
VV
2
2
<1
5
10
Seech 1
Disc.
(in.)
-
132
-
•t
-
-
Comments on biological data,
NPS sources, etc.
Rated M~E In NES
run
LNU
Rated E in NES report
Rated E 1n NES
w
Rated 0 In NES '
rwn
LIlU
-------
UTAH
TABLE 5
Lake (Reservoir! Trophic Assessment
Lake/Locati on/S tati on
(If appropriate)
Bear Lake (Paris, Idaho PI
Outlet) 112WRD 10059500
Deer Creek REservoir -
below on Provo River PS
31UTLINK 221516
Deer Creek Reservoir -
below on Provo River
11ZWRD 10159500
Joe's Valley Reservoir
at overflow 113FORS4
i,
P1ute Reservoir - below
on Sevier River
112WRD 10191500
**Utah Lake - outlet
31UTLINK 331158 PS
Utah Lake - on lake PS
several UTLINK stations
Trophic
State
M~0
Pd-hM
C**rl
E~M
H~E
Mean
Hydr.
Ret.
(Days)
-
-
-
-
-
-
-
Tot.
P
rag /I
0.030
-
-
-
-
-
-
Nutrients
Dlss.
P
mg/i
0.015
0.120
0.047
0.070
0.031
0.053
0.360
Total
N03-N
mg/1
0.250
0.380
0.470
1.250
0.240
0.865
0.980
*
N;P
(5D
3
10
(IB)
8
(jT)
3
Seech i
Disc.
(in.)
-
-
-
-
-
-
-
Comments on biological data,
NPS sources, etc.
Rated 0 1n NES
RataH F In NF9
Rated 0 1n NES (Hide disparity with
these data
Significant NPS suggested
Rated E in NES r
CND £
Rated E In NES
Localized blue-green algae and matted
algae colonies noted
-------
WYOMING
TABLE 5
Lake (Reservoir) Trophic Assessment
Lake/Locat1 on/Stati on
(If appropriate)
Flaming Gorge - below at
Green River NES (Wyoming)
112WRD 09234500
Flaming Gorge
Numerous USGS sites
Glendo Reservoir - below
at North Platte River
112WRD 06652800
Woodruff Narrows Reservoir
below at Sear River
11ZWRD 10020300
Trophic
State
0<->M
-
M*+0
Mean
Hydr,
Ret.
(Days)
-
-
-
-
Tot.
P
rag/1
0.007
-
0.014
-
Nutrients
Diss.
P
rag/1
0.013
0.009
-
0.027
Total
N03-N
mg/1
0.727
0.450
0,170
0.083
*
N :P
-
(^0
-
4 '
Secchi
Disc.
(in.)
-
-
-
-
Comments on biological data,
NPS sources, etc.
One sample ~ 21 yg/1 chlor.a
Rated M^-E In NES (wide disparity with
these data)
CND
Rated E 1n NES
N/A
CND
Rated E in NES
(wide disparity with these data)
Phosphoroas Limited Condition is circled,
*Ratio of dissolved phosphorous to total inorganic nitrogen.
PL - Problem Lakes In the U.S.-1971.
See Table 3 for lake classifications.
CND = Comprehensive nutrient data (non-NES).
N/A - No assessable data,
0 = Oligotrophic
M - Mesotrophic
E - Eutrophic
PS = Significant point source potential
V)
I
-------
TABLE 6
TROPHIC CRITERIA
MEAN TOTAL
P
(rng/1)
0.010
0,010
TO
0.025
>0.025
MEAN
SECCHI DISC
(INCHES)
>146
146 TO 79
<79
MEAN CHLOR-
OPHYLL a
(uq/1)
0 TO 4
4 TO 10
>10
ALGAL ASSAY
CONTROL LAKE
YIELD NUTRIENT
(mg/1) RATIO (P:N)*
0 TO 7 1 TO >14
8 TO 18 1 TO 14
>18 1 TO <14
LIMITING
NUTRIENT
PHOSPHOROUS
GENERALLY
PHOSPHOROUS;
SOMETIMES
NITROGEN
NITROGEN
TROPHIC
CONDITION
<**)
0 TO M
M TO 0
THRU
M TO E
E TO M
* MEDIAN DISSOLVED PHOSPHOROUS: MEDIAN INORGANIC NITROGEN
** 0 = OLIGOTROPHIC, M * MESOTROPHIC, E = EUTROPHIC
NOTE: DISSOLVED OXYGEN IN THE HYPOLINION LESS THAN 5MG/L OR 2/3^ OF SATURATION AND ALGAL CELL COUNT
GREATER THAN 10,000/ML WERE ALSO CONSIDERED SIGNS OF EUTROPHY.
o
t
-------
-41-
TABLE 7
Lakes and Reservoirs tn Region VIII Used as a Drinking Water Supply
STATE CITY SERVED
Colorado 1. Arvada
2. Aurora
3. Boulder
-------
-42-
STATE
Colorado
Montana
CITY SERVED
15, North Table Mountain Water
and Sanitation District
16. Norwood
17. Pueblo
18. Trinidad
19. Westminister
1. Alberton
2. Anaconda
3. Bozeman
4. Chester
5. Conrad
6. Fortine
7. Ft. Peck
8. Niehart
9. Phillipsburg
10^ Pol son
11. Ronan
12. Somers
13. Whitefish
WATERBODY
North Dakota 1. Bel court
2. Dickinson
South Dakota
1. Aberdeen
2. Chamberlain
3. Faith
Long Lake
& Lone Con-
Greeley Reservoir
crete Reservoir
Pueblo Reservoir
Monument Lake
Standley Lake
2 Reservoirs
18 Lakes
Mystic Lake
Tiber Reservoir
Frances Lake
1 Reservoir
Ft. Peck Reservoir
1 Reservoir
Fred Burr Lake
1 Reservoir
1 Reservoir
Flathead Lake
Whitefish Lake
Fish Lake
Patterson Reservoir (Dickinson
Dam)
Willow Creek Res.
Francis Case Lake (Ft. Randall Res.)
Durkee Lake
-------
-43-
South Dakota
Utah
Wyoming
4* Fox Ridge
5. Gettysburg
6. Isabel
7. Kennebec
8. Lake Andes
9. Mitchell
10. Mobridge
11, Murdo
12. Phillips
13. Randall Rural
Water and Sanitation
District
(Proposed)
14. Springfield
15. Watertown
16. Yankton
17. Miscellaneous Users
1.. Ogden
2. Salt Lake City
l. Casper
2. Cody
3. Kenmerer
Oahe Lake
Oahe Lake
Isabel Lake
Byre Lake
Francis Case Lake
Mitchell Lake
Oahe Lake
Murdo Reservoir
Waggoner Lake
Francis Case Lake (Ft. Randall Res.l
Lewis and Clark Lake
Kampeska Lake
Lewis and Clark Lake
Sharp Lake (Big Bend Reservoir)
Plnevlew Reservoir
Deer Creek Reservoir and
Mountain Dell Reservoir
Pathfinder Reserovir and
Alcove Reservoir
Buffalo Bill Reservoir
Hams Fork Reservoir
-------
-44-
A. Colorado
TABLE 8
*CLEANUP CANDIDATE
SUMMARY
B. Montana
1
Z.
Dillon Reservoir (G&P)
Grand Lake (G&P)
Green Mountain Reservoir {G&P)
Shadow Mountain Reservoir {G&P)
Granby Reservoir (G&P)
Blue Mesa Reservoir (G&P)
Navajo Reservoir
Sloans Lake (C)
Chatfleld Lake (P)
Standley Reservoir
C. Horth Dakota
1.
2.
None
Audubon Reservoir (
Darling Lake (C)
Metigoshe Lake
Pelican Lake
Sweetwater Lake (C)
E. Utah
1.
Bear Lake (G&C)
2.
Deer Creek Reservoir (G&P)
Echo Lake (G&P)
Fish Lake
Plnevlew Reservoir
Sevler Bridge Reservoir (G&P)
Strawberry Reservoir
1 = Protection may be needed
2 - Abatement " " "
1.
Flathead Lake (G&P)
McDonald Lake (G)
WMtefish Lake (G)
2.
Koocanusa Reservoir (Int. Joint Conrn.)
Nelson Reservoir
Tiber Reservoir
D. South Dakota
Pactola Reservoir (G&P)
Angostura Reservoir (G&P)
Deerfield Reservoir
Pocasse Lake (C)
Kampeska Lake (G)
Wyoming
1.
2.
Flaming Gorge (?)
Fremont Lake
DeSmet Lake
Keyhole Reservoir (G,P)
Seminoe Reservoir
Glendo Reservoir (P)
Palisades Reservoir (G,P)
Yellowtall Reservoir (P)
*(NPS control 1s assumed desirable for protection or abatement until It 1s
known not to be part of the problem.)
C = Clean lake action may be appropriate
G = Grant activity " "
P = Permit action " "
Blank = NPS alone would be the prime vehicle
of cleanup or protection.
-------
-45-
TABLE 9
STATE-BY-STATE TROPHIC SUMMARY*
A, NES Summary
Colorado
Montana
North Dakota
South Dakota
Utah
Wyoming
TOTAL
B. Non-NES
Colorado
Montana
North Dakota
South Dakota
Utah
Myoming
TOTAL
0 -^M
1
5
1
5
2
14
*Includes
Summary
0++M
16
1
3
1
0
21
C. GRAND TOTAL
0 -~M
35
M ++ 0
5
4
1
6
2
18
bordering
M •*•* 0
6
1
4
n
M -»• 0
29
M ** E
E~ M
7
6
13
31
15
n
83
state NES
M «-» E
E** M
17
1
5
2
1
2
28
M *+ E
E ++ M
in
lakes and reservol
Not fully
Assessable
3
2
1 1
4
10
Lack dlss.
phos. data
10
TOTAL
13
15
14
32
26
IS
115
rs.
TOTAL
42
4
5
6
3
10
70
Waterbodies with
nutrient data
185
-------
46
OOLIDGE
KANSAS
COLORADO
0 K) K) 30 40 SO
ON-GOING
MONITORING
RECOMMENDED
ON -GOING
MONITORING
RECOMMENDED
CLEAN-UP CANIDATE
EUTROPHIC 80%
MESOTROPHIC4O%
JOLIGOTROPIC \Q%
I NEED DATA
1208 SECTION AREA
^ON-GOING MONITORING
ft NEED DATA
DW DRINKING WATER SUUPPLY
(co)STATE OF COLORADO PRIMARY STATION
(JJ*)USGS NATIONAL STREAM QUALITY ACCOUNTBMG NETWORK
(ns)EPA NATONAL WATER QUALITY SURVEILLANCE SYSTEM
iDOUBLE STATION
BS BASIC
AJj£2 FULLY SWIMMABLE a FISHABLE
FIGURE 1 COLORADO
LAKE A RESERVOIR ASSESSMENT
PREPARED BY ADMIN. SVC. BR. 8-76
J TORRES MKARAVfTES
SECONDARY SWIMMABLE & FULLY FISHABLE
-------
ATFUATHEAD
BRITISH COLUMBIA CANADA
47
SRESNO RES.
' B.D-3
WHITEFISH
A-O.D-I LAKE
W
^MCDONALD LAKE
MEDICINE LAKE
B.D-2
HUNGRY
HORSE
RES
BINETGEORGE RES
B.D-1
LAKE FRANCES
B.D-1 DW
SEELEYLAKE
B.D-1
HAUSERLAKE
B.D-1
LAKE HELENA
B.D-1
CANYON FERRY RES
B.D-1
NR. MILES CrTY faff [n a)AT MILES Cm
GEORGETOWN
MYSTIC LAKE
B.D-1 DW/~
RUBY RIVER RES
MADISON RES
B.D-1
B.D-2
TONGUE RIVER RES.
CLARK CANYON RES.
B.D-1
ON-GOING
MONITORING
RECOMMENDED
EUTROPHIC8O %
M ESOTROPH 1C 4O%
CLEAN-UP CANIDATE
2O8 SECTION AREA
!OLIGOTROPHIC 1O
I5> USGS NATIONAL STREAM QUALITY ACCOUNTING NETWORK
0EPA NATIONAL WATER QUALITY SURVEILLANCE SYSTEM
DOUBLE STATION
DW - DRINKING WATER SUPPLY
A-O.D-I-COLDWATERFISHABLE&SWIMMABLE(DRINKING WATER-
B.D-1 -COLDWATER FISHABLE&SWIMMABLE
B.D-2 - MARGINAL COLDWATER FISHABLE & SWIMM ABLE
B.D-3 - WARM WATER FISHABLE & SWIMM ABLE
OPEN ACCESS)
FIGURE 2 MONTANA LAKE & RESERVOIR ASSESSMENT
PREPARED BY ADMIN SVC BR 7-76
JTORRES MKARAVITES
-------
48
S. OF PEMBINA
. HOPPLE
OF OAKWOOD
AT OSLO
AT GRAND FORKS
GRAND
'FORKS
METIGOSHE LAKE
PELICAN LAKE
!NR. SHERWOOD
UPPER DES LACS LAKE
MIDDLE DES LACS LAKE
LOWER DES LACS LAKE
LAKE DARLING
AT UPHAM
AT WHITE EARTH
ALICE LAKE
LAKE IRVINE
S. BR. NR. HOPPLE
SWEETWATER LAKE
N. BR. NR. FORDVILLE
MATECEK LAKE
(Id
Srf
S.OF .WILUSTO
DEVILS LAKE W.
. STUMP LAKE
DEVILS^LAKE E.
SAKAKAWEA RES
CLASS I
na
^—*
NR. WATFORD
ARROWWOOD LAKE
MISSOURI RIVER
SOUTH CENTRAL
SPIRITWOOD
LAKE
LAKE ASHTABULA. HARW
AMESTOWN
AT BUCHANAN
NR. GLADSTONE
SQ. BUTTE CR.
DICKINSON RES!
DW
AT JAMESTOWN
NR JAMESTOWN
NR. SCHMIDTfnS
OAHE RES.
CLASS I
BEAVER ' LAKE
LA MOURE R
.? FK. GRAND R.
BOWMAN-HALEY DAM
NR. ELLENDALEfad
EUTROPHIC 80%
MONrrORING
RECOMMENDED
MESOTROPHIC AO% ra»H 2O8 SECTION AREA
DW DRINKING WATER SUPPLY
OLK5OTROPHIC
FARGO
MOORHEAD
MONITORING
RECOMMENDED
&
CLEAN-UP CANIDATE
CLASS I FULLY SWIMMABLE
CLASS IA FULLY SWIMMABLE AND SOFTENING MAY BE REQUIRED
CLASS II FULLY SWIMMABLE AND OTHER TREATMENT MAY BE REQUIRED
CLASS HI FULLY SWIMMABLE AND DE-SALTING MAY BE REQUIRED
STATE OF NORTH DAKOTA PRIMARY STATION
USGS NATIONAL STREAM QUALITY ACCOUNTMG NETWORK
NATIONAL WATER QUALITY SURVEILLANCE SYSTEM
DOUBLE STATION
FIGURE 3 NORTH DAKOTA
LAKE & RESERVOIR ASSESSMENT
PREPARED BY-ADMIN. SVC. BR. 7-76
J. TORRES MXARAVITES
-------
\rvc-
[AVERSE
NR. BELLE FOURCHE
POCASSE LAKE
MUD LAKE RES
5,8
COLUMBIA ROAD RES
5.8
RICHMOND LAK
4
S. RED IRON LAKE
PICKEREL LAKE
WILLOW CREEK RES
1,5
WAUBAY LAKE
\ OAHE RES
LAKE KAMPESKA
1.4
BELLE FOURCHE RES
COTTONWOOD LAKE
5
LAKE COCHRANE
4
LAKE BYRON
5.10
Sd) ABOVE HURON WEST^
?y OAKWOOD LAKES
BELOW HURON
DEERFIELD LAKE
J 2
ABOVE MITCHi
£J)BELOW Mil
B
E.VERMILLION
LAKE MrTCHELL
1,4
STOCKADE LAKE
FORT RANDALL RES
1,4,7,8,11
ANGOSTURA RES
BELOW FT. RANDALL DAW
LEWIS & CLARK
LAKE
1.4.7.8.
AKRON IOWA
SOUTH DAKOTA
0 10 20 30 40 50
ON<3OING
MONITORING
RECOMMENDED
ON-GO ING
MONITORING
RECOMMENDED
a
AT SIOUX CITY IOWA
EUTROPHIC80X
MESOTROPHIC40»
I V^» JNEED DATA
CLEAN-UP CANIDATE
lOLIGOTROPHIC 10%
1 - DRINKING WATER SUPPLY
2 - COLD WATER-PERMANENT FISH ABLE
3 - COLD WATER MARGINAL FISHABLE
4 - WARM WATER PERMANENT FISHABLE
9 2O8 SECTION AREA
ON-GOING MONITORING
a NEED DATA
7 - IMMERSION REC.(SWIMMABLE)
8 - LIMITED CONTACT REC.
9 -WILDLIFE PROGATION & STOCK WATERING
1O - IRRIGATION
STATE OF SOUTH DAKOTA PRIMARY STATION
(na) USGS NATIONAL STREAM QUALfTY ACCOUNTING NETWORK
(ns) EPA NATIONAL WATER QUALITY SURVEILLANCE SYSTEM
g) DOUBLE STAT.ON FIGURE * S°U™ DOKOTA
LAKE & RESERVOIR ASSESSMENT
PREPARED BY ADM.IN SVC. BR. 8-76
JTORRES MKARAVITES
5 - WARM WATER SEMI - PERMANENT FISHABLE ,, COMMERC1AL & INDUSTR1AL USE
6 - WARM WATER MARGINAL FISHABLE
-------
2
-------
51
SHOSHONE
AT BORDER
AT BORDER
WYOMING
ON-GOING
MONrTORING
RECOMMENDED
ON-GOING
MONITORING
RECOMMENDED
CLEAN-UP CANIDATE
MESOTROPHIC 4O%
OLIGOTROPHIC 10JJ
NEED DATA
I2O8 SECTON AREA
ON-GOING MONFTORING
a NEED DATA
NR. NORTHGATE COLORADO
fay)STATE OF WYOMING PRIMARY STATION
@USGS NATIONAL STREAM QUALITY ACCOUNTING NETWORK
nEPA NATIONAL WATER QUALfTY SURVEILLANCE SYSTEM
•DOUBLE STATION
DW DRINKING WATER SUPPLY
FIGURE 6 WYOMING
LAKE ft RESERVOIR ASSESSMENT
PRPARED BY ADMIN, SVC. BR. 7-76
JTORRES MKARAVFTES
-------
O
E
100
_J
STATUTE MILRS
CO
© G6NERAL ELECTRIC CO 19T6
Ul
isi
-------
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**"* v^w>
r- . -L- (tv^- [
' • >*>- ' ^
v: ; - ": ^ <"
L:,-1?*.'^1
-------
M
O
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HO
© I EMM,. ILCCMIC co itTt
-------
CO
0
M t)
' '"'
t -^*
—*v/
i * ** ••
-? • ' • '
L ..-.••.. , . •; ,;^,
^,- f.
*"nir;^:'.,r
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• H'jFsi*.': :,. :'.: •,."-.
i.':;; g;KI'ii Si: 'fV? 5j^Xv'; •
^ '"5>rfi'"---''?S!?j(:.'
#£*"*iS%?^V?*r?{'i •
» t
1'-
'•' ^ :• j^T
•• Cjs
">:
'': ^. ' "••">: ". .- '.':/ '••'•';:--J' '^••^if''^'^1 $'•'''';' '"'
•';;'.-"/ '."^.; . Jji "'f/r'1^1.- ''••'.'.•:'. "i',"""' :•'';.•;';ii'r^4^.r-:":'^-v1''..'-- '••""'. ••'
-------
-56-
ii
' ''"• v>X£ i,
:
UTAH LANDSAT
FIGURE 11
-------
'
.
• •-•'•"•.*'. "• -A>'
' ^ .f4 .-":-W
r •
\ J> ..A*
l'*TUTl (in.Il
*T
® 4tH[UL f LrCTDIC CO. ItTI
-------
-58-
iCAPAClTY:1200q.fs.,
HIGHMQRE CANAL i
CAPACITY 2130cfsJ
. '_ . . _ _ a- /
' -
&.Cr~^?
MAP COVERAGE
-.i-j_i, _ i •_ __ t_:v_ ..$i£?r..J.?'* ??.... . ••_. r ^..j_-i,-_ j i .; ON LINE DENOTES"!
L DOUBLE CIRCUIT J
SUBSTATION
RECREATION AREA
FISH AND WILDLIFE
AREA
FIGURE 13
UNITED STATES
DEPARTMENT OF THE INTERIOR
KENT FRIZZELL. ACTING SECRETARY
BUREAU OF RECLAMATION
GILBERT G. STAMM. COMMISSIONER
PICK-SLOAN MISSOURI BASIN PROGRAM
OAHE UNIT
INITIAL STAGE
SOUTH DAKOTA
UPPER MISSOURI REGION
MAP NO. 469-602-5170
SCALE OF MILES
10 0
SCALE OF KILOMETERS
SEPTEMBER 1975
GPO 831-890
-------
FACTUAL DATA ON THE OAHE UNIT
AUTHORIZATION
The multipurpose Initial Stage of Oahe Unit was authorized by Public
Law 90-153, on August 3, 1968, "for the principal purposes of furnishing
a surface irrigation water rupply for approximately 190,000 acres of
land, furnishing water for municipal and industrial uses, controlling
floods, conserving and developing fish and wildlife resources, and
enhancing outdoor recreation opportunities ..."
WATER SUPPLY
The water will be obtained principally from Lake Oa^e formed by
Oahe Dam on the Missouri River. Storage capacity of this reservoir is
23,600,000 acre-feet. Average annual flow of the Missouri River at
Oahe Dam H898-19721 is 18,525,000 acre-feet. Diversion from Lake Oahe
to central South Dakota will average about 444,1100 acre-feet annually,
which is about 3 percent of the long-term average annual flow.
A portion of the water supply w!M be obtained from floodTlows of
the James River and from irrigation return flows accruing to the
James River.
FEATURES OF THE I.NJTIAL STAGE DEVELOPMENT
The principal supply works will include the Oahe Pumping Plant, 214
miles of main canals, three regulating reservoirs, the James Diversion
Dam /existing), and the James Pumping Plant on the James River. Other
irrigation works include 955 miles of distribution laterals, 935 miles
of open drains, and 2,970 miles of closed fpipe) drains, and electrical
distribution facilities for the pumping plants.
LOCAL PUBLIC AGENCIES
The Oahe Conservancy Sub-District, established by vote of the people,
became fiscal agent for the Oahe Unit by contract with the United States
on January 8, 1969. The Sub-District will provide centralized operation
and maintenance of all multipurpose Unit facilities. As fiscal agent
for the United States, the Sub-District will make appropriate collections
from all water users for operating costs and repayment of construction
costs.
The West Brown and Spink County Irrigation Districts have contracted
with the Conservancy Sub-District for project irrigation water service.
IRRIGATION PLAN
Water will be pumped by Oahe Pumping Plant into the headworks of
the 36-mile-long Pierre Canal for conveyance to Blunt Reservoir.
Pumping lift will average 122 feet. From Blunt Reservoir, the water
will flow by- gravity through the Highmore and Faulkton Canals, a
distance of 62 miles, to Cresbard Reservoir. From Cresbard Reservoir,
the water will be conveyed a distance of 12 miles via Cresbard Canal
to the West Main and Redfield Canals which will supply Missouri River
water to West Lake Plain irrigable lands and to the James River.
Some relift pumping of water will be required in the lateral distri-
bution system.
Missouri River water, irrigation return flows, and James River
floodflows will be pumped from the James River for East Lake Plain
irrigation. The James Pumping Plant, to be located at the existing
James Diversion Dam, will lift water from the James River into the
headworks of James Canal. The pump lift will average 28.5 feet.
NORTH
0 A K 0 T A
1 ---I "
SCLIV I \
NORTHERN EAST LAKE PLAIN
POTENTIAL FUTURE DEVELOPMENT
- «""•"> MISSOURI SLOPE AREA 11
^^t-^} POTENTIAL FUTURE DEVELOPMENT
' JJ GENERAL LOCATION AREA OF
'L. L r !r""'o,l?!aSY jar"0"
POTENTIAL FUTURL
DEVELOPMENT
The James Canal will be about 3 miles in length and terminate at
Byron Reservoir. Deliveries to East Lake Plain land will be made
from Byron Reservoir by means of the Byron Pumping Plant and a canal
and a lateral system. There would also be an extensive closed and
open drainage system for all of the irrigable area.
CLIMATE
Annual precipitation averages about 19 inches and the average annual
temperature is 45° F. in the Lake Plain. Annual precipitation has
varied from less than 12 inches to more than 32 inches and temperatures
have ranged from -40° F. to 115° F. During the growing season months
there is an average of 11.5 hours of sunshine daily. The average
frost-free period (32° F.) is 135 days. The average irrigation season
extend 5 months; May through September. The consumptive use of
irrigation water can vary from 8 inches to IS inches depending on
precipitation during the growing season.
NUMBER OF IRRIGABLE ACRES
The authorized Oahe Unit provides for development of 190,000
acres of irrigation in the Lake Plain area in West Brown and Spink
County Irrigation Districts.
CHARACTER OF SOILS IN IRRIGABLE AREAS
Soils of land proposed for irrigation in the Lake Plain area are
predominantly silty loam with some portions varying to silty-clay
loam overlying glacial drift. Detailed land classification has
identified over 190,000 acres suitable for irrigation. The
relatively flat topography of the Lake Plain area makes it well
suited for irrigation development.
ALTITUDE OF IRRIGABLE AREA
The Lake Plain area ranges in elevation between 1295 and 1310 feet
above mean sea level, except where streams have cut shallow valleys.
LAND USE AND FARM ORGANIZATION
Irrigable lands are dispersed throughout the area and nearly all farm
units will include both irrigated and nonirrigated lands. This inte-
grated irrigation-dryland type of farm development will have a stabilizing
influence extending far beyond the project boundaries. Area farmers
will have a dependable and continuing nearby market for many of their
feeder livestock with.intensified feeding operations on integrated
project farms. The Unit will also be producing a dependable feed supply
which dryland farmers outside the project area could secure for their
livestock breeding herds during periods of drought.
PRINCIPAL PRODUCTS
Under present dryland farming, principal agricultural products are
corn, wheat, other small grains, alfalfa, feeder livestock, and some
fat livestock. Under irrigation, the principal products are expected
to be f&t livestock, corn, and alfalfa. There will also be sorae small-
grains, other feed crops, and significant acreages of sugar bee^s,
potatoes, and vegetable crops which will be limited by markets and
processing plants. Livestock raising and fattening will be the major
farm enterprises under irrigation development. There will be some
increased dairy production.
MARKETS
Present marketing facilities, with some increase in their capacity,
will handle most of the increased agricultural production from
irrigation development. Much of the livestock will be sold as feeders
or direit to processors. Some livestock may be shipped to out-of-state
markets, Dairy products would be sold through local processing plants.
New local markets would be developed as needed for specialty crops
such as sugar beets, potatoes, and vegetables.
MUNICIPAL AND INDUSTRIAL HATER
Opportunity for water delivery will be available to 17 or more
municipalities and rural water systems. Feasibility studies for
Oahe Unit municipal and industrial water facilities were authorized
by Congress under Public Law 92-577, 92nd Congress, on October 27,
1972. These studies will be made, upon requests from municipalities,
tc determine the cost of additional facilities needed to provide
water from the Oahe Unit system. Federal participation in
construction of delivery works would require separate authorization
by Congress and a commitment by the water users to repay costs.
RECREATION AND FISH AND HlLDLIFE
Recreation facilities and fish and wildlife developments have been
constructed at James Diversion Dam. Additional recreation facilities
are proposed at .the three regulating reservoirs and one existing lake
at which the water level will be stabilized. Ftsd and wildlife develop-
ments are planned at 17 locations and will total about 12,000 acres of
water and marsh and 29,000 acres of adjacent upland.
INCIDENTAL FLOOD CONTROL
Incidental flood control would result from diverting a portion of
James River floodflows into Byron Reservoir.
Additional incidental flood control would result if channel modifi-
cation measures as authorized were determined to be the most feasible
alternative for the James River in the Lake Plain area.
ALTERNATIVES TO PROJECT FEATURES
Several features of the Oahe Unit plan require additional investi-
gation and public input before selecting the most desirable
alternative. Studies and public involvement are in progress on the
effect Project operation and return flows will have on water quality
of the James River, methods of handling increased James River flows,
and alternative demand reservoir sites for Byron Reservoir.
POTENTIAL FUTURE DEVELOPMENT
An additional 305,000 acres of land in the northern East Lake Plain
and Missouri Slope areas are suitable for irrigation and have potential
for future development. Strong local interest would be needed to obtain
Congressional authorization and funding for feasibility studies. If
completed future studies show development to be feasible, further
Congressional authorization and funding would then be required before
construction of facilities to serve these additional areas. Development
of the potential areas would require enlargements of some of the
facilities serving the initial 190,000 acres and construction of addi-
.tional canals, laterals, and drainage facilities.
For additional information address inquiries to;
Bureau of Reclamation, P.O. Box 825
Huron, South Dakota 57350, or
Bureau of Reclamation, P.O. Box 2553
Billings, Montana 59103
SEPTEMBER 1975
-------
-59=
,™>-x\ 5
; \:. \oos, v^
-McGLUSXEY^CANAL
'• I ! !» ! I I i ; • ! ! ~ i "
L- -L_-4—^ l 1.L4 !.;:;.'-- •
! lJ^^\^=f>JT < "T > '.
~J2*>°-1< * !U!!
;^^^^,:i;|r;-! 7 j TT'i
L,4i-w^^^2iai2tea^^2«di4i22^J
—I/
DEX MAP
#'
4 „
EXPLANAT I 0 N
1RRI3ABLE LAND
CANAL OR LATERAL
PUMPING PLANT
SIPHON
PROJECT DRAIN
DAM AND RESERVOIR (PROPOSED)
DAM AND RESERVOIR [EXISTING)
TRANSMISSION LINE { U.S.B.R.)
SUBSTATION ( U.S.8.R. )
PUBLIC POWER PLANT ( STEAM, NON FEDERAL t
U.S. GOVERNMENT HYOO POWER PLANT (U.S.C.C, )
PROPOSED FISH 6 WILDLIFE DEVELOPMENT AREAS
'ROPOSED NATIONAL PARK SERVICE DEVELOPMENT AREAS
GARRISON DIVERSION CONSERVANCY DISTRICT BOUNDARY
FIGURE 14
UNITED STATES
DEPARTMENT OF THE INTERIOR
BUREAU OF RECLAMATION
ELLIS L. ARMSTRONG . COMMISSIONER
BUREAU OF SPORT FISHERIES 8 WILDLIFE
SPENCER H. SMITH ACTINS DIRECTOR
NATIONAL PARK SERVICE
SCORGE a. MARTZOB JR., DIRECTOR
PICK-SLOAN MISSOURI BASIN PROGRAM
GARRISON DIVERSION
UNIT
IN ITIAL STAGE- 250.000 ACRES
NORTH DAKOTA
( REGIONS)
MAP NO. 769-603-5700
B^^^O__||||a_u_K>^ tO_
act LE OF MILE S
-------
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UNITED STATES
OCPAimtENT Of THE INTERIOR
BUREAU OF RECLAMATION
CENTRAL UTAH PROJECT
BONNEVILLE UNIT
GENERAL MAP
AUGUST 1971
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U.S. Government Printing Office: 1976-777-430/34 Regions RECLAMATION — PRESS PUBLISHING COMPANY SM (8-71)
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