Massachusetts /

Willis Pond

Reservoir in Massachusetts · 74 acres · near Sudbury

Aerial view of Willis Pond, August 2023
Aerial view of Willis Pond, August 2023 Photo: USDA Farm Service Agency, NAIP · Public domain · via USGS The National Map

Willis Pond is a 74-acre reservoir near Sudbury in Massachusetts, with 1 public boat ramp listed here.

Past algal blooms

Harmful algal blooms reported on this water (state reports compiled by U.S. EPA): 2015.

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

Boat launches on Willis Pond