Grassy Lake which is formed by Grassy Lake Dam is a major feature on the Mindoka Project. This 1,477-acre reservoir is located near the Wyoming-Idaho border between Yellowstone and Grand Teton National Parks. Fish species include rainbow, cutthroat, and lake trout. Reservoir acre feet and total reservoir capacity and cubic feet/second release rates for rivers below Upper Snake River Basin reservoirs and select river locations are updated daily and graphically provided. No improvements, services, or facilities.
Fair access via Forest Service Road 135, east of U.S. 89/287.
Caribou-Targhee National Forest 1405 Hollipark Drive Idaho Falls , ID 83401
Boating Fishing Hunting Water Sports
BOR - Bureau of Reclamation