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