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Home > Projects > Science & Technical > Water Quality
WATER QUALITY
CRWA Daily Water Quality Flag Colors |
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For weekend flag colors please call (781) 788-0007 ext. 301, or sign up to receive daily flag color notifications in your inbox.
Charles River Watershed Association's Water Quality Flagging Program presents the daily flag colors of the river's health, which signify whether or not the river is safe for boating at nine boating locations from Watertown to Boston. Flag colors are based on bacteria levels and blue-green algae counts. CRWA estimates bacteria levels using a model that takes into account various environmental factors. CRWA typically collects river samples for bacteria weekly to verify our model predictions. Algae monitoring is conducted at least every two weeks, or weekly when there is a bloom. Weekend flag colors are based on weather forecasts and are subject to change.
Water quality flag colors for Wednesday , October 6, 2010
Click on the links to see the bacteria results for 2010:
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1. Access Sport America at Spaulding Dock |
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6. Charles River Canoe &
Kayak |
2. Union
Boat Club |
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7. Northeastern Boathouse |
3. Charles River Yacht Club |
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8. Community Rowing |
4. Riverside Boat Club |
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9. Newton Yacht Club |
5. Harvard's Weld Boathouse |
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Massachusetts Department of Public Health has lifted their cyanobacteria (a.k.a. blue-green algae) warning for the Charles River Lower Basin after two consecutive weeks of samples with cell counts below the threshold of 70,000 cells/ml.
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A
blue flag indicates safe boating conditions.
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A yellow flag indicates inconclusive data to predict possible
health risks.
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A red flag indicates likely health risks.
Avoid areas
where red flags are posted or make sure you wash after boating nearby.
Flag colors are based on bacteria levels and blue-green algae counts.
Today's
flag colors are a conservative estimate of water quality conditions.
Actual water quality may vary from predictions.
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 Flagging
Home Page | Algae Info | Project Background | 1998-2008
Historical Date | Daily water quality email list
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