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upcoming events

Sept 10
Water Trouble Forum, 7PM
Winn Brook School, 97 Waterhouse Rd, Belmont

Sept 12
Mare Liberum journey down the Mystic, 11AM

Sept 14
Friends of the Malden River meeting, 6:30PM
Cambridge Health Alliance, 195 Canal St, Malden

Sept 15
Flatbread Pizza Doughraiser, 5PM-11PM
45 Day St, Somerville, MA

Sept 19
Canoe Tour (free!), 9AM
Mystic Wellington Yacht Club, Medford
Event at capacity

Sept 22
Blessing of the Bay, Somerville

Oct 6
Committee Meeting, 7-9PM
Arlington Town Hall, 730 Massachusetts Avenue, Arlington - Selectmen's Hearing Room, 2nd floor

Oct 19
MyRWA Annual Meeting, 7PM
Keynote Speaker Congressman Capuano


Since July 2000, MyRWA has been monitoring trends in water quality with the help of a dedicated corps of volunteers. Water samples are collected from fifteen sites across the watershed (see map and site list below) and are analyzed for:

  • Bacteria: Enterococcus or E. coli
  • Total suspended solids
  • Nutrients: nitrate-nitrite, total phosphorus
  • Conductivity
  • Dissolved oxygen
  • Water temperature
  • Water color and odor

The map below shows the location of all baseline monitoring stations. Detailed station descriptions, along with GPS coordinates, are included in the map by clicking on the individual site pointers.

For the full version of the Mystic River Environmental Atlas click here.

For an Explanation of Parameters used in the Mystic Monitoring Network, click the link here.

Follow the links below to download results of bacteria and all other parameters from 2000-2011. 



Baseline Monitoring Sampling Sites

Site ID

ABR049 -
Aberjona River at Salem Street, Woburn MA
ABR028 -
Aberjona River at Washington Street, Winchester MA
ABR006 -
Aberjona River at USGS on Mystic Valley Parkway across from Mystic Avenue, Winchester MA
UPL001 -
Upper Mystic Lake at the Mystic Lakes Dam by Medford Boat Club off of Mystic Valley Parkway, Medford MA
MYR071 -
Mystic River at High Street outlet from Lower Mystic Lake, Medford MA
MIB001 -
Mill Brook at Mt. Pleasant Cemetery upstream of weir, Arlington, MA
WIB001 -
Winn’s Brook at Little Pond on Brighton Street, Belmont MA
ALB006 -
Alewife Brook at Broadway, Somerville MA
MEB001 -
Meetinghouse Brook outlet into Mystic River just downstream of Winthrop Street bridge, Medford MA
MAR036 -
Malden River at Medford Street, Malden MA
CHR95S -
Chelsea River at Condor Street, Urban Wild, Chelsea MA
MIC004 -
Mill Creek at Broadway Bridge, East Boston MA
Mystic River at Mary O'Malley Park, Chelsea MA
BEI093 -
Belle Isle Marsh at Crystal Avenue, Chelsea MA
MYR275 -
Mystic River at the end of Fellsway near RR bridge, Somerville MA


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