Note: It is currently not boating season. We do not display flags when it is not boating season. We hope to see you again in the near future!

Predictive Model Outputs

These outputs are predictions of E. coli levels, based on real-time data that the CRWA collects about the weather and the streams flow of the Charles River.

The model reports E. coli predictions by reach. Hover over the info icon to see which boathouses are associated with each reach.

The model only predicts E. coli, not combined sewage overflows (CSOs) or cyanobacteria blooms. These events may leave the Charles River unsuitable for recreational activities, even when the predictive model has a "safe" prediction.

Predictive Model for Reach 2

Boathouses:
  • Community Rowing, Inc.
  • Newton Yacht Club
  • Northeastern's Henderson Boathouse
  • Paddle Boston at Herter Park
  • Watertown Yacht Club
Time Probability Safe
2023-01-26 07:00:00 PM 0.7274828083 False
2023-01-26 06:00:00 PM 0.7274828083 False
2023-01-26 05:00:00 PM 0.7274828083 False
2023-01-26 04:00:00 PM 0.7274828083 False
2023-01-26 03:00:00 PM 0.7275356391 False
2023-01-26 02:00:00 PM 0.7274815197 False
2023-01-26 01:00:00 PM 0.7274398517 False
2023-01-26 12:00:00 PM 0.7276374171 False
2023-01-26 11:00:00 AM 0.7273294337 False
2023-01-26 10:00:00 AM 0.7271364575 False
2023-01-26 09:00:00 AM 0.7269055476 False
2023-01-26 08:00:00 AM 0.7270831483 False
2023-01-26 07:00:00 AM 0.7269012464 False
2023-01-26 06:00:00 AM 0.7253715009 False
2023-01-26 05:00:00 AM 0.7218405314 False
2023-01-26 04:00:00 AM 0.7204203562 False
2023-01-26 03:00:00 AM 0.7118068470 False
2023-01-26 02:00:00 AM 0.6993382531 False
2023-01-26 01:00:00 AM 0.6827560676 False
2023-01-26 12:00:00 AM 0.6727311282 False
2023-01-25 11:00:00 PM 0.6664818602 False
2023-01-25 10:00:00 PM 0.6532569815 False
2023-01-25 09:00:00 PM 0.6487864102 True
2023-01-25 08:00:00 PM 0.6442895852 True

Predictive Model for Reach 3

Boathouses:
  • Cambridge Boat Club
  • Harvard's Weld Boathouse
Time Probability Safe
2023-01-26 07:00:00 PM 0.6914122497 False
2023-01-26 06:00:00 PM 0.6914122497 False
2023-01-26 05:00:00 PM 0.6914122497 False
2023-01-26 04:00:00 PM 0.6914122497 False
2023-01-26 03:00:00 PM 0.6914122497 False
2023-01-26 02:00:00 PM 0.6914122497 False
2023-01-26 01:00:00 PM 0.6914122497 False
2023-01-26 12:00:00 PM 0.6921291086 False
2023-01-26 11:00:00 AM 0.6939172018 False
2023-01-26 10:00:00 AM 0.6953434882 False
2023-01-26 09:00:00 AM 0.6956994758 False
2023-01-26 08:00:00 AM 0.6960552293 False
2023-01-26 07:00:00 AM 0.6960552293 False
2023-01-26 06:00:00 AM 0.6949243050 False
2023-01-26 05:00:00 AM 0.6920867028 False
2023-01-26 04:00:00 AM 0.6909475686 False
2023-01-26 03:00:00 AM 0.6840642552 False
2023-01-26 02:00:00 AM 0.6741736175 False
2023-01-26 01:00:00 AM 0.6611409913 False
2023-01-26 12:00:00 AM 0.6533218366 False
2023-01-25 11:00:00 PM 0.6484682479 True
2023-01-25 10:00:00 PM 0.6380407462 True
2023-01-25 09:00:00 PM 0.6346087763 True
2023-01-25 08:00:00 PM 0.6311630767 True

Predictive Model for Reach 4

Boathouses:
  • Boston University DeWolfe Boathouse
  • Riverside Boat Club
Time Probability Safe
2023-01-26 07:00:00 PM 0.7053960943 False
2023-01-26 06:00:00 PM 0.7053960943 False
2023-01-26 05:00:00 PM 0.7053960943 False
2023-01-26 04:00:00 PM 0.7053960943 False
2023-01-26 03:00:00 PM 0.7054718839 False
2023-01-26 02:00:00 PM 0.7053942457 False
2023-01-26 01:00:00 PM 0.7053344684 False
2023-01-26 12:00:00 PM 0.7062867198 False
2023-01-26 11:00:00 AM 0.7075151382 False
2023-01-26 10:00:00 AM 0.7085720011 False
2023-01-26 09:00:00 AM 0.7085758514 False
2023-01-26 08:00:00 AM 0.7091610576 False
2023-01-26 07:00:00 AM 0.7089022858 False
2023-01-26 06:00:00 AM 0.7074726082 False
2023-01-26 05:00:00 AM 0.7043299113 False
2023-01-26 04:00:00 AM 0.7030673620 False
2023-01-26 03:00:00 AM 0.6954272019 False
2023-01-26 02:00:00 AM 0.6844172902 False
2023-01-26 01:00:00 AM 0.6698573184 False
2023-01-26 12:00:00 AM 0.6610957357 False
2023-01-25 11:00:00 PM 0.6556481204 False
2023-01-25 10:00:00 PM 0.6455897965 True
2023-01-25 09:00:00 PM 0.6416397597 True
2023-01-25 08:00:00 PM 0.6376704067 True

Predictive Model for Reach 5

Boathouses:
  • Charles River Yacht Club
  • Paddle Boston at Kendall Square
  • Union Boat Club
Time Probability Safe
2023-01-26 07:00:00 PM 0.6795152537 False
2023-01-26 06:00:00 PM 0.6788031503 False
2023-01-26 05:00:00 PM 0.6781029154 False
2023-01-26 04:00:00 PM 0.6773808593 False
2023-01-26 03:00:00 PM 0.6766571765 False
2023-01-26 02:00:00 PM 0.6759139181 False
2023-01-26 01:00:00 PM 0.6751721153 False
2023-01-26 12:00:00 PM 0.6749271203 False
2023-01-26 11:00:00 AM 0.6753914053 False
2023-01-26 10:00:00 AM 0.6755928661 False
2023-01-26 09:00:00 AM 0.6750681515 False
2023-01-26 08:00:00 AM 0.6745609849 False
2023-01-26 07:00:00 AM 0.6738269756 False
2023-01-26 06:00:00 AM 0.6726212202 False
2023-01-26 05:00:00 AM 0.6707552122 False
2023-01-26 04:00:00 AM 0.6696713496 False
2023-01-26 03:00:00 AM 0.6662081913 False
2023-01-26 02:00:00 AM 0.6616111206 False
2023-01-26 01:00:00 AM 0.6558896686 False
2023-01-26 12:00:00 AM 0.6525006294 False
2023-01-25 11:00:00 PM 0.6503974898 False
2023-01-25 10:00:00 PM 0.6457745359 True
2023-01-25 09:00:00 PM 0.6443765258 True
2023-01-25 08:00:00 PM 0.6430005823 True