b'E N E R G YBlack Canyon Diversion Dam (10.2 MW)Bulk Power Transmission UtilitiesConcrete dam; completed in 1924, re-constructed Idaho Power Companybetween 1951 and 1955 by the United StatesNatural GasBureau of Reclamation Impounds the Payette River for the diversion of Intermountain Gas Companywater into the Black Canyon and North Side Main Serviced by the William Northwest Pipeline irrigation canals (Cassia County) Part of the Bureaus larger Boise ProjectMajor Substations Emmett SubstationFIGURE 3. Gem County Energy Infrastructure MapGEM County 393'