Eden Dam


Eden Dam is a series of irregular dikes originally built under the Carey Act by Eden Irrigation and Land Company about 1907. In 1959, the Bureau of Reclamation constructed a new outlet works from the reservoir through the abutment in the southeast side of the reservoir to supply the old Eden Canal.

The reservoir is approximately 2.5 miles at its widest point, and 2 miles in length with a surface area of about 1,100 acres.The outlet works consists of a concrete lined tunnel controlled by constant head orifice gates and an overflow control structure.

The spillway is contained in the outlet works as an uncontrolled concrete overflow structure above the orifice gates. The spillway has a crest width of 15 feet and crest elevation of 6713.5 feet. A 22 inch wood beam has been added to the top of the spillway to get a new crest elevation of 6715.2 feet. The spillway is used only in an emergency since the water inflow to the reservoir is controlled by diversions through the Little Sandy Feeder Canal.

RegionFacilities in Upper Colorado | Upper Colorado Home Page
Dam Type
ReservoirEden Reservoir
WatercourseOS Little Sandy Creek
Original Construction1910, rehabilitated in1959
Modified Construction
National ID NumberWY01388
Hydrologic Unit Code

Structural Height27.0 ft
Hydraulic Height (Normal Operating Depth at Dam)19.0 ft
Top Parapet (Elevation)
Spillway Crest Elevation6713.4 ft
Crest Elevation6720.0 ft
Crest Length3500.0 ft
Crest Width
Base Width
Volume of Dam Construction Materials92,000 cu. yards
Streambed at Dam Axis6696.0 ft
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)
Top of Inactive Conservation Pool (Elevation)
Top of Dead Storage Pool (Elevation)

Hydraulics & Hydrology
Total Water Storage at Elevation
Maximum Water Surface Elevation6715.0 ft
Normal Water Surface Elevation
Spillway Type
Auxiliary SpillwayNo
Spillway Capacity at Elevation
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation
Diversion Capacity at Elevation
Drainage Area7.43 sq mi
Hydrometeorological Report (HMR)HMR 49
Probable Maximum Flood (PMF) Report

Contact Information
TitleArea Office Manager
OrganizationProvo Area Office
Address302 East 1860 South
CityProvo, UT 84606-7317
Phone (Office)801 379-1101
OrganizationEden Valley Irrigation and Drainage District
Address13 Highway #28
CityFarson, WY 82932
Fax307 273-9567
Phone (Office)307 273-9566

Last updated: Feb 20, 2009