Massachusetts /

Rosemary Lake

Reservoir in Massachusetts · 13 acres · near Needham

Aerial view of Rosemary Lake, September 2023
Aerial view of Rosemary Lake, September 2023 Photo: USDA Farm Service Agency, NAIP · Public domain · via USGS The National Map

Rosemary Lake is a 13-acre reservoir near Needham in Massachusetts, with 2 carry-in launches listed here.

Past algal blooms

Harmful algal blooms reported on this water (state reports compiled by U.S. EPA): 2026.

state reports compiled by U.S. EPA · checked October 20, 2026

Kayak and canoe launches on Rosemary Lake