Boathouses

Flags

Red flags are being flown at some boathouses due to a Combined Sewer Overflow (CSO). A discharge at CAM005 discharged on 7/25/2025 beginning at 3:05pm and ending at 3:20pm, potentially affecting the Charles River downstream of the Eliot Bridge across from Mount Auburn Hospital. Blue flags will be restored 48 hours from the end time. Public health officials recommend avoiding contact with the river during rainstorms and for 48 hours afterward, as there may be increased health risks due to bacteria or other pollutants discharged by CSOs. For more information see: https://www.cambridgema.gov/Departments/publicworks/combinedseweroverflowreporting

CRWA’s water quality models are predicting blue flags at all other boathouses, based only on E. coli bacteria predictions.

Blue flag for Community Rowing, Inc.
Community Rowing, Inc.
Blue flag for Newton Yacht Club
Newton Yacht Club
Blue flag for Northeastern's Henderson Boathouse
Northeastern's Henderson Boathouse
Blue flag for Paddle Boston at Herter Park
Paddle Boston at Herter Park
Blue flag for Watertown Yacht Club
Watertown Yacht Club
Blue flag for Cambridge Boat Club
Cambridge Boat Club
Red flag for Harvard's Weld Boathouse
Harvard's Weld Boathouse
Red flag for Boston University DeWolfe Boathouse
Boston University DeWolfe Boathouse
Red flag for Riverside Boat Club
Riverside Boat Club
Red flag for Charlesgate Yacht Club
Charlesgate Yacht Club
Red flag for Charles River Yacht Club
Charles River Yacht Club
Red flag for Paddle Boston at Kendall Square
Paddle Boston at Kendall Square
Red flag for Union Boat Club
Union Boat Club

Map

Below is a map showing the Charles River boathouses with their current flag statuses. Clicking on a flag will show the name of the boathouse.

( Last updated: July 26, 2025 at 8:00 PM )