St Anthony P-14552

The original St. Anthony Hydroelectric Project was constructed in 1903 by the St. Anthony Light and Power Company. Utah Power and Light acquired the project in 1913 and dismantled and constructed a new power plant. The project was transferred the PacifiCorp in 1988 and eventually decommissioned in 2002. Originally part of a joint project (Ashton-St. Anthony: P-2381), St. Anthony Hydro LLC purchased the St. Anthony portion of the project from PacifiCorp in 2013 and refurbished it in 2014. The project came back on-line in October 2014. The St. Anthony Hydroelectric Project (FERC No. 14552) utilizes the head and a portion of the flows impounded by a diversion structure (12T, 445487.8 E, 4868203.8 N) on the Henry’s Fork of the Snake River. The Project is located in Fremont County, Idaho, approximately 0.25 miles southwest from St. Anthony city center. The project is located in Section 1, T7N, R40E, B.M. All land associated with the project is owned by St. Anthony Hydro or has long standing easements. There is no federal land in the project boundary. All structures are owned by St. Anthony Hydro, LLC.

The St. Anthony Hydroelectric Project consists of the diversion dam, intake head gates, intake canal, bypass gate, two turbines, powerhouse (containing one generating unit), substation, and transmission lines.

PROJECT FACILITIES

The existing project facilities at the site consisting of:

• a 375.2-foot-long concrete overflow diversion dam that is approximately 6.5 feet high with crest elevation of 4,952 feet MSL. The crest is formed by a concrete ogee section extending a length of 152.9 feet and a 1.0-foot-high concrete capped section extending a length of 169.3 feet. The dam also includes a 31-foot-wide stoplog section and a fish passage section at the upstream abutment
• a 41-foot-wide reinforced-concrete canal intake structure
• a 35-foot-wide, 1,350-foot-long power and irrigation canal
• an irrigation canal headworks structure
• a 16-foot-wide, 145-foot-long concrete flume having an overflow spillway and an ice chute
• a 24-foot x 37-foot trash rack made up of 5 sections with automated debris removal rake system
• reinforced concrete powerhouse containing a 500-kW generating unit
• a tailrace
• the 2.3-kV generator leads
• appurtenant facilities