Hyrum P-946

General information

Waterway  Blacksmith Fork Logan River
Current status   Active license 
Type of facility Conventional Hydro
Mode of hydropower generation Run-of-river
Type of permit FERC License

FERC information

FERC docket # P-946
FERC project name Hyrum
Permit issued 7/27/08
Permit expiration 7/27/38

Ownership and operation

Owner Hyrum City Corporation
Owner type Publicly Owned Utility
Year first online (conventional hydro) 1931

Power and generating capacity

Number of units 1
Total capacity from hydraulic turbine-generator units within each plant 0.5 mW

Download license summary for the Hyrum project.

The project is located on the Blacksmith Fork River in Cache County, Utah, and occupies 17.14 acres of federal lands within the Wasatch Cache National Forest. The project includes the following constructed facilities:

  1. a 260 foot-long dam consisting of a 15-foot-high, 70-foot-long earth-fill concrete core embankment to the north; a 14-foot-high, 65-foot-long concrete spillway section; and a 15-foot-high, 125- foot-long earth-fill concrete core embankment to the south,
  2. a 37-acre-foot de-silting reservoir (forebay);
  3. a 16-foot-high, 8-foot-wide concrete intake structure with a 20- foot-high, 8-foot-wide trash rack;
  4. a 60-inch-diameter concrete penstock inlet with head gate;
  5. a 3,470-foot-long, 48-inch-diameter concrete penstock going into a 130-foot-long, 42-inch-diameter steel penstock;
  6. a 26-foot-wide, 39-foot-long, 20-foot-high brick powerhouse containing a 400-kW Leffel horizontal shaft scroll case turbine;
  7. a 60-foot-long, 2.4-kilovolt (kV) underground transmission line and;
  8. appurtenant facilities.

Source: FERC



EA Issued 12-20-2007
License Issued 08-01-2008

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