Grassy Lake

Overview

Grassy Lake is managed by Bureau of Reclamation and is located near Alta, Wyoming. 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.

Things to Do at Grassy Lake

Recreation Activities

Popular activities at Grassy Lake include:

Nearby Activities

Plan Your Visit

Getting There

Fair access via Forest Service Road 135, east of U.S. 89/287.

GPS Coordinates: 44.12948000000000, -110.82055000000000

Contact & Resources

Phone: 208-624-3151

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