Deaver Dam

Deaver Dam is located in the northwestern Bighorn Basin in a small basin between Sage and Polecat Creeks, tributaries of the Bighorn River.  The foundation of Deaver Dam consists of late Cretaceous Shale overlain by Quaternary pediment deposits.  The pediment deposits consist of gravel with some sand, silt and gravel mostly unlithified, but locally cemented by caliche.  The gravels contain subangular to subrounded pebbles and some cobbles.  Thickness of gravels at the damsite is not known, but Cody Shale is exposed nearby along the reservoir.  The Cody Shale contains buff sandy shale and thinly laminated buff sandstone, moderately lithified.  These beds dip about 5 degrees southwest.

RegionFacilities in Great Plains | Great Plains Home Page
Dam Type
Original Construction1918
Modified Construction
National ID NumberWY01379
Hydrologic Unit Code

Structural Height14.0 ft
Hydraulic Height (Normal Operating Depth at Dam)10.0 ft
Top Parapet (Elevation)
Spillway Crest Elevation
Crest Elevation4309.0 ft
Crest Length13000.0 ft
Crest Width
Base Width
Volume of Dam Construction Materials
Streambed at Dam Axis
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)4305.0 ft
Top of Inactive Conservation Pool (Elevation)
Top of Dead Storage Pool (Elevation)4295.0 ft

Hydraulics & Hydrology
Total Water Storage at Elevation
Maximum Water Surface Elevation
Normal Water Surface Elevation4305.0 ft
Spillway Type
Auxiliary Spillway
Spillway Capacity at Elevation
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation21 cfs at 4305 ft
Diversion Capacity at Elevation
Drainage Area
Hydrometeorological Report (HMR)
Probable Maximum Flood (PMF) Report

Contact Information
TitleFacility Manager
OrganizationBig Horn Basin Field Office
Address#4 Reclamation Road
CityCody, WY 82414
Phone (Office)307-527-6256 (ext. 260)
OrganizationDeaver Irrigation District
AddressP.O. Pox 205
CityDeaver, WY 82421
Phone (Fax)307 664-2548
Phone (Office)307 664-2351

Last updated: Mar 29, 2013