Henrys Lake

Reservoir in Idaho · 6,488 acres · near Lake, Staley Springs

Henrys Lake has 2 boat ramps listed as public.

Algal bloom health alert

Idaho Department of Health and Welfare has a cyanobacteria health alert for this water (updated October 2, 2026). Avoid contact with discoloured water or scum, and keep pets and children out of it.

Idaho Department of Health and Welfare · checked October 18, 2026

Past algal blooms

Harmful algal blooms reported on this water (state reports compiled by U.S. EPA): 2016, 2017, 2021 to 2024 and 2026.

state reports compiled by U.S. EPA · checked October 18, 2026

Lake level: Henrys Lake

Today's level loads here; without it, see the agency's page below.

Level from Bureau of Reclamation, Reclamation Information Sharing Environment (RISE) (Henrys Lake and Henrys Lake Dam), daily; the agency's page. Levels change; check conditions at the ramp before you launch.

Launches

Henrys Lake - Frome Park · Boat ramp · near Staley Springs
Henrys Lake - South Shore · Boat ramp · near Staley Springs

Community

Where people who fish, boat and paddle Henrys Lake talk about it. Lake associations, clubs and local groups will be added as we find them.

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Wikidata: Q7330579