Pilot Butte Dam

Overview
Pilot Butte Dam is located in the Wind River Basin of west central Wyoming.  Bedrocks, in ascending order are Pre-cambrian gneiss and metasediments, Paleozoic to Cretaceous sediments, Eocene-age Wind River sandstones, terrace gravel and modern alluvium.  The older folded and faulted sedimentary bedrocks are oil-bearing.  The nearest known active fault is 35 miles east of the site.

General
RegionFacilities in Great Plains | Great Plains Home Page
StateWyoming
CountyFremont
ProjectPSMBP-Riverton
Dam Type
ReservoirPilot Butte
WatercourseOffstream
Location
Longitude-108.7531
Latitude43.1970
Net Generation4,326,480 kWh
Original Construction1926
Modified Construction
National ID NumberWY01381
Hydrologic Unit Code

Dimensions
Structural Height64.0 ft
Hydraulic Height (Normal Operating Depth at Dam)55.0 ft
Top Parapet (Elevation)
Spillway Crest Elevation5460.0 ft
Crest Elevation5467.0 ft
Crest Length55.0 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)5460.0 ft
Top of Inactive Conservation Pool (Elevation)5410.0 ft
Top of Dead Storage Pool (Elevation)5407.5 ft

Hydraulics & Hydrology
Volume
Total Water Storage at Elevation
Maximum Water Surface Elevation
Normal Water Surface Elevation5467.0 ft
Spillway Type
Auxiliary SpillwayNo
Spillway Capacity at Elevation500 cfs at 5461.4 ft
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation1000 cfs at 5460.0 ft
Diversion Capacity at Elevation
Drainage Area
Hydrometeorological Report (HMR)
Probable Maximum Flood (PMF) Report

Contact Information
Owner
TitleFacility Manager
OrganizationBig Horn Basin Field Office
Address#4 Reclamation Road
CityCody, WY 82414
Phone (Office)307-527-6256 (ext. 260)
Operator
OrganizationMidvale Irrigation District
AddressPO Box 128
CityPavillion, WY 82523
Phone (Office)307 856-6359


Last updated: Apr 02, 2013