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Moon Lake Project
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Project Data
Land Areas (1992)
Area Irrigated and Crop Value



Project # 209

Land Areas (1992)
Irrigable area - Moon Lake - Midview Exhange:
Full Irrigation Service0 acres
Supplemental Service5,560 acres
Temporary Irrigation Service0 acres
Number of Irrigated Farms58
Residential, Commercial, Industrial Lands5,560 acres
Total Irrigable Lands5,560 acres


Irrigable area - Moon Lake - Moon Lake Division:
Full Irrigation Service0 acres
Supplemental Service71,556 acres
Temporary Irrigation Service0 acres
Number of Irrigated Farms665
Residential, Commercial, Industrial Lands550 acres
Total Irrigable Lands72,106 acres


Population Served - Moon Lake - Midview Exchange:
Farm Population Served290
Non-Farm Population Served0
Total Population Served290


Population Served - Moon Lake - Moon Lake Division:
Farm Population Served1,825
Non-Farm Population Served4,485
Total Population Served6,565

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Area Irrigated and Crop Value
Moon Lake - Midview Exchange
YearActual Area Irrigated (Acres)Crop Value (Dollars)

Moon Lake - Moon Lake Division

YearActual Area Irrigated (Acres)Crop Value (Dollars)

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Project Water Supply

Current Conditions


Duchesne River near Randlett, Utah (USGS)
Yellowstone River near Altonah, Utah (USGS)
Uinta River below Powerplant Diversion near Neola, Utah (USGS)
Streamflow Forecast Map

Spring and Summer (NRCS)
Snowpack Information

Mountain Snowpack Maps for Great Basin and California
Mountain Snowpack Maps for Colorado River Basin

Drought Index

Palmer Drought Index Map

Annual Precipitation
Normal9.51 in
Maximum - 198317.99 in
Minimum - 19744.60 in
Duchesne, Utah 1906-1998 


Mean Annual44.9 ?F
Daily Maximum - 08/04/1970101 ?F
Daily Minimum - 01/09/1937-43 ?F
Duchesne, Utah 1906-1996 
Growing Season135 days
Elevation of irrigable area5,000 - 7,000 ft


Duchesne River
Drainage area at Duchesne, Utah660 mi2
Annual discharge 
Maximum - 1922540,534 acre-ft
Minimum - 193484,480 acre-ft
Average - 1917-1969256,145 acre-ft

West Fork of the Lake Fork River

Drainage area at Moon Lake Dam112 mi2
Annual discharge 
Maximum - 1983145,047 acre-ft
Minimum - 197743,721 acre-ft
Average - 1951-199783,733 acre-ft

East Fork of the Lake Fork - also called Yellowstone Creek

Drainage area near Altonah, Utah142 mi2
Annual discharge 
Maximum - 198078,401 acre-ft
Minimum - 197743,065 acre-ft
Average - 1977-198155,922 acre-ft

Uinta River

Drainage area near Neola, Utah132 mi2
Annual discharge 
Maximum - 1952153,385 acre-ft
Minimum - 195475,818 acre-ft
Average - 1946-1955102,462 acre-ft

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Project Water Quality


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Facilities in Operation
Storage Dams2
Diversion Dams1
Canals37.5 mi
Laterals9 mi

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Storage Facilities

Midview Dam and Dike

Moon Lake Dam

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Diversion Facilities
Duchesne Feeder Canal Diversion Dam
Type:Concrete weir, embankment wings
LocationOn the Duchesne River, about 5 miles east of Duchesne, Utah.
Year Completed1939
Hydraulic height6 ft
Weir length220 ft
Crest elevation5,375.5 ft
Volume4,000 yd3
Headworks:One 12-ft-square radial gate in canal headworks. Two 10- by 6-ft radial gates in sluiceway.
Diversion capacity200 cfs

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Carriage Facilities
Duchesne Feeder Canal
LocationFrom the Duchesne River about 6 miles from Duchesne, Utah, to Midview Reservoir, then generally northeast to Lake Fork of Duchesne River.
Construction period1934-1935
Length15 mi
Diversion capacity200 cfs
Typical section in earth: 
Bottom width14 ft
Side slopes1.5:1
Water depth3.4 ft


Yellowstone Feeder Canal
LocationFrom point of the East Fork of Lake Fork generally east about 20 miles to the Uinta River.
Construction period1938-1940
Length22.5 mi
Diversion capacity88 cfs
Typical section in earth: 
Bottom width7 ft
Side slopes1.5:1
Water depth3 ft


Midview Lateral Canal
LocationFrom Midview Reservoir north past the Lake Fork of the Duchesne River.
Length9 mi
Diversion capacity80 cfs
Typical section in earth: 
Bottom width7 ft
Side slopes1.5:1
Water depth3 ft

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Last updated: May 11, 2011