Jordanelle Dam


Jordanelle Dam and Reservoir, located on the Provo River about 6 miles north of Heber City, provides water storage at an upstream site by exchange for Bonneville Unit water in Utah Lake and Strawberry Reservoir and for most of the water presently regulated in 15 small reservoirs on the headwaters of the Provo River. The reservoir functions as a long term holdover reservoir to provide storage through a six year drought period. Jordanelle has a capacity of 320,300 acre-feet with a surface area of 3,068 acres. The municipal and industrial water stored in Jordanelle Reservoir is delivered to Salt Lake County by way of the Provo River and Jordan Aqueduct, and to northern Utah County by way of the Provo River and Alpine Aqueduct.


The design data for Jordanelle Dam was reviewed by three independent panels of internationally recognized earth science authorities who concluded that a dam the size of Jordanelle could be safely constructed at the selected site.  In addition, the combined United States and Utah Congressional Delegation conducted an in-depth investigation and declared Jordanelle Dam to be geologically sound.

The dam is designed to withstand an earthquake of Richter scale magnitude 7.5 on the Wasatch Fault (19 miles west of the damsite), and magnitude 6.5 for a local random earthquake directly below the dam.

RegionFacilities in Upper Colorado | Upper Colorado Home Page
ProjectCUP - Bonneville Unit
Dam Type
Original Construction1987-1992
Modified Construction
National ID NumberUT82912
Hydrologic Unit Code

Structural Height345.0 ft
Hydraulic Height (Normal Operating Depth at Dam)283.0 ft
Top Parapet (Elevation)
Spillway Crest Elevation6169.0 ft
Crest Elevation6185.0 ft
Crest Length3700.0 ft
Crest Width
Base Width
Volume of Dam Construction Materials14,500,000 cu. yards
Streambed at Dam Axis5886.0 ft
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)6166.4 ft
Top of Active Conservation Pool (Elevation)6130.0 ft
Top of Inactive Conservation Pool (Elevation)
Top of Dead Storage Pool (Elevation)5902.0 ft

Hydraulics & Hydrology
Total Water Storage at Elevation
Maximum Water Surface Elevation6169.0 ft
Normal Water Surface Elevation
Spillway Type
Auxiliary SpillwayNo
Spillway Capacity at Elevation6,600 cfs at 6169.0 ft
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation3,600 cfs at 6169.0 ft
Diversion Capacity at Elevation
Drainage Area258.0 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
OrganizationCentral Utah Water Conservancy District
Address355 West University Parkway
CityOrem, UT 84058-7303
Phone (Office)801 226-7100

Last updated: Mar 05, 2009