Helena Valley Reservoir is located in central Montana, adjoining the city of Helena, Montana, and 3.5 miles west of Canyon Ferry Dam on the Missouri River. The principal purposes of the unit are irrigation and municipal water for the city of Helena. Features of the development are a tunnel dam and regulating reservoir, canal, pumping plant, and other facilities. Created by the Helena Valley Dam the reservoir, with 518 surface acres and 6 miles of shoreline, offers fair fishing for kokanee salmon. Picnic shelters available. This is a day use area which offers fishing and boating access. Boat launching is by carry-in method. Electric motors only.