Mattapoisett River Mouth

How Healthy is Your Water?

Mattapoisett River Mouth Snapshot

33
out of 100
Bay Health Index (5-year average)
poor
fair
good
33
33
out of 100

Supporting Data

Mattapoisett River Mouth: Rail Trail Bridge (Station MH3)
Nitrogen, dissolved oxygen, algae, and water clarity measurements taken from shore and boat by the Mattapoisett Rail Trail bridge crossing the river. (41.651743, -70.827858)
Total Nitrogen
Dissolved Inorganic Nitrogen
Total Organic Nitrogen
Dissolved Oxygen
All Measurements
Average of Lowest 20%
Algal Pigments
Total Pigments
Water Clarity
Yearly Average

Volunteer

Become a Baywatcher

Help the Buzzards Bay Coalition keep an eye on the health of the water in your community. Become a Baywatcher, and you can volunteer as a "citizen scientist" on the water this summer.

Read More ›

Top Stories on Mattapoisett Harbor/Eel Pond

10 Buzzards Bay herring runs to visit this spring

With spring comes the sound of songbirds, the sight of colorful flowers, the feeling of warm sunshine – and migratory river herring returning to Buzzards Bay’s waters. Catch a glimpse of river herring at one of these 10 herring runs around the region.

Full Story ›
Protected land on Mattapoisett River will safeguard Marion’s clean drinking water

The Coalition has conserved 164 acres of forestland in the Mattapoisett River Valley to protect a well that supplies drinking water to Marion residents.

Full Story ›
5 places to rent a kayak or paddleboard on Buzzards Bay

Try your hand at paddling without having to purchase any gear – these five local outfitters rent kayaks and stand-up paddleboards so you can set off on a paddling adventure today.

Full Story ›

Working to Save Buzzards Bay

The Buzzards Bay Coalition is a membership-supported organization dedicated to improving the health of the Buzzards Bay ecosystem for all through education, conservation, research, and advocacy.

We work to protect clean water on the Bay and on the land: