East Canyon Dam


East Canyon Dam is a concrete thin-arch structure, 10 miles southeast of Morgan on East Canyon Creek. The new dam, with a height of 260 feet, a top thickness of 7 feet, crest length of 436 feet, and a volume of 35,716 cubic yards, replaces an old concrete arch dam and increases the reservoir capacity from 29,000 to 51,200 acre-feet, covering a surface area of 684 acres. The uncontrolled spillway is on the left end of the dam and has a 6,200-cubic-foot-per-second capacity; the outlet through the dam has a capacity of 710 cubic feet per second.


Located in a narrow-walled canyon where the stream has cut through very hard, massive, well-cemented beds of the conglomerate of late upper Cretaceous ages. Also, the Wasatch fault is located about 12 miles west of the dam. Finally, there is an inactive fault about 300 feet upstream from the dam.

RegionFacilities in Upper Colorado | Upper Colorado Home Page
ProjectWeber Basin
Dam Type
ReservoirEast Canyon
WatercourseEast Canyon Creek
Original Construction1964-1966
Modified Construction
National ID NumberUT10119
Hydrologic Unit Code

Structural Height259.8 ft
Hydraulic Height (Normal Operating Depth at Dam)195.0 ft
Top Parapet (Elevation)
Spillway Crest Elevation
Crest Elevation5715.0 ft
Crest Length436 ft
Crest Width7 ft
Base Width20 ft
Volume of Dam Construction Materials35716 cu yd
Streambed at Dam Axis5520.0 ft
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)5705.0 ft
Top of Active Conservation Pool (Elevation)
Top of Inactive Conservation Pool (Elevation)5577.0 ft
Top of Dead Storage Pool (Elevation)5564.5 ft

Hydraulics & Hydrology
Total Water Storage at Elevation
Maximum Water Surface Elevation5715.0 ft
Normal Water Surface Elevation
Spillway Type
Auxiliary Spillway
Spillway Capacity at Elevation6200 cfs at 5715
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation700 cfs at 5715 ft
Diversion Capacity at Elevation
Drainage Area145 sq mi
Hydrometeorological Report (HMR)
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
OperatorNo value defined

Last updated: Feb 20, 2009