Joes Valley Dam


Joes Valley Dam is an earthfill dam 1,290,000 cubic yards in volume, 187 feet above streambed, and 750 feet long at the crest. The project provides for regulation of Seely Creek, a major tributary of Cottonwood Creek. The reservoir has a total capacity of 62,460 acre-feet and a surface area of 1,170 acres.

Water is released from storage flows on Seely Creek to Cottonwood Creek and the Cottonwood Creek-Huntington Canal, which heads at Swasey Diversion Dam.


The dam and its abutments are founded on the flat lying Blackhawk Formation that contains numerous lignite (coal) beds interlaced among the sandstones.

RegionFacilities in Upper Colorado | Upper Colorado Home Page
ProjectEmery County
Dam Type
ReservoirJoes Valley
WatercourseSeely Creek
Original Construction1963-1966
Modified Construction
National ID NumberUT10124
Hydrologic Unit Code

Structural Height192 ft
Hydraulic Height (Normal Operating Depth at Dam)180.4 ft
Top Parapet (Elevation)
Spillway Crest Elevation
Crest Elevation7004 ft
Crest Length750 ft
Crest Width
Base Width
Volume of Dam Construction Materials1,290,000 cu. yards
Streambed at Dam Axis6817.0 ft
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)6989.7 ft
Top of Inactive Conservation Pool (Elevation)6908.9 ft
Top of Dead Storage Pool (Elevation)6866.5 ft

Hydraulics & Hydrology
Total Water Storage at Elevation
Maximum Water Surface Elevation6997.4 ft
Normal Water Surface Elevation
Spillway Type
Auxiliary SpillwayNo
Spillway Capacity at Elevation5000 cfs at 6989.7 ft
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation385 cfs at 6989.7 ft
Diversion Capacity at Elevation
Drainage Area135 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
OrganizationEmery Water Conservancy District
Address50 East 100 South
CityCastle Dale, UT 84513
Phone (Office)435 381-2311

Last updated: Mar 05, 2009