- Moon Lake Dam and Reservoir - Mountain Home UTThe US Bureau of Reclamation built the Moon Lake dam and reservoir in 1935-38. Water supply from the reservoir began in 1938. The curb and parapet were added in 1940-41. Funding came from the Public Works Administration (PWA). Moon Lake Dam is an earth-fill, rock-faced dam, 101 feet high and with a volume of 513,000 cubic yards. It dams the west branch of the Lake Fork River and the reservoir covers a former natural lake, also called Moon Lake. The Uinta Mountains rise dramatically upstream of the lake. Moon Lake reservoir is the principle storage facility for the Moon Lake Reclamation Project...