Massachusetts /

Lake Warner

Reservoir in Massachusetts · 69 acres · near Hadley

Lake Warner has 1 boat ramp listed as public.

Past algal blooms

Harmful algal blooms reported on this water (state reports compiled by U.S. EPA): 2019 to 2021.

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

Depth contours in feet from MassWildlife; deepest point about 9 ft. Lake levels and bottoms change; not for navigation.

Launches