The dam is on the western slope 13 miles southeast of Kremmling, Colorado, on the Blue River, a tributary of the Colorado. Recreational developments include 6 campgrounds, 208 campsites, and 2 boat-launch facilities. Good access. One swim beach. Water surface for fishing is approximately 2,125 acres. Fishing is the primary recreational activity, followed by power boating and camping. Primary sport fish available are brown trout, rainbow trout, and salmon. Campgrounds closed in winter due to snow and ice.Green Mountain Dam and Reservoir are features of the Colorado-Big Thompson Project. Current Reservoir Levels