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upcoming events

May 7
Earth Day Clean-ups
various locations

May 9
Friends of the Malden River meeting, 6:30-8PM Cambridge Health Alliance, 195 Canal Street, Malden

May 11
DCR Public Meeting re: MacDonald Park in Medford, 6:30PM
200 River's Edge Dr., Medford

May 14
Early bib pick-up for Herring Run & Paddle, 11am-1pm
Sports Authority at Assembly Row, 133 Middlesex Ave, Somerville

May 15
Herring Run & Paddle
32 Shore Dr., Somerville
Registration begins at 8:00AM

May 15
Fish ladder "open house", 12-3PM
Mystic Lakes Dam, Medford

May 18
Fish ladder "open house", 3-7PM
Mystic Lakes Dam, Medford

May 21
Fish ladder "open house", 9AM-Noon
Mystic Lakes Dam, Medford

June 7
Committee Meeting, 7-9PM
Tufts University, Tisch College of Citizenship & Public Service, Lincoln Filene Hall, Rabb Room, 10 Upper Campus Road, Medford

June 14
Flatbread Pizza Dough Raiser
45 Day St., Somerville, MA


Since 2000, the Mystic River Watershed Association has maintained a comprehensive water quality monitoring program that serves as the fundamental component of our work. This program, the Mystic Monitoring Network, is staffed by over 48 trained volunteers from area towns and cities and provides critically important data with regard to the sources, type and volume of existing impairments to the river’s natural environment and water quality. Explore data here!

Baseline Monitoring Program

See the interactive table below for detailed information on trends in water quality in the Baseline Monitoring Program throughout fifteen sites in the watershed.

Hot-Spot Monitoring Program

Intensive sub-watershed studies are performed through this program.

Cyanobacteria Monitoring Program

Cyanobacteria, a potentially harmful bacteria, is monitored throughout the watershed primarily at recreational areas.



Click here for monitoring dates and additional resources.

Get involved! If you are interested in volunteering with the Mystic Monitoring Network as a water quality monitor, click here to fill out an on-line application and read about other volunteer opportunities. No experience is necessary and all training and materials are provided.

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