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CHARLES RIVER WATERSHED ASSOCIATION

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Water Quality Notification Program - Charles River Watershed Association

CRWA's Water Quality Notifiation Program has ended for the 2017 season and will resume July 2018.

CRWA's Water Quality Notification Program presents the daily flag colors of the river's health, which signify whether or not the river is safe for boating at ten boating locations from Watertown to Boston. Flag colors are based on E. coli and cyanobacteria levels. 


CRWA estimates E. coli levels using a model that takes into account a variety of environmental factors including antecedent rainfall and river flow. CRWA collects river samples for bacteria weekly during the summer to verify the model forecast. Cyanobacteria monitoring is conducted at least every two weeks. Read more about the development of CRWA's bacteria prediction model.

Water Quality Notification Program - Charles River Watershed Association

Blue Flags:

Indicate suitable boating conditions
Water Quality Notification Program - Charles River Watershed Association

Yellow Flags:

Indicate inconclusive data to preclude a possible health risks

Water Quality Notification Program - Charles River Watershed Association

Red Flags:

Indicate potential health risks

Massachusetts Environmental Trust

 

This project is generously funded in part by the Massachusetts Environmental Trust.

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About Water Quality Notification

About Field Science

Project Manager

Elisabeth Cianciola - Charles River Watershed Association
Elisabeth Cianciola
Aquatic Scientist
Bio | 781.788.0007 x231 | 
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