Bradley Lake Hydroelectric, Nuka Glacier

The Bradley Lake hydroelectric project in the Kenai Mountains was completed in 1991 and now provides relatively inexpensive power to Kachemak Bay communities. The main dam was built on the outlet to Bradley Lake and a 3.5-mile power tunnel, with a diameter of 11 feet, transports water from the dam to the powerhouse at the head of Kachemak Bay. The Nuka Glacier is on Bradley Pass, the watershed divide between the Nuka River that flows into Kenai Fjords National Park, and the Bradley River that flows into Kachemak Bay. Prior to 1991, most of Nuka Glacier outflow went into the Nuka River during low-flow periods, but during high discharges, most of the water went into Bradley River. In order to maximize the flow going into Bradley River, a 5-foot dike was built at Bradley Pass to divert the river into Bradley Lake. Read more here and here. Click here to download the CoastView app and explore the head of Kachemak Bay.