How Healthy is Your Water?
41.656167, -70.81302 41.651078, -70.82095 41.652087, -70.822839

Inner Mattapoisett Harbor Snapshot

66
out of 100
Bay Health Index (5-year average)
poor
fair
good
66
66
out of 100

Supporting Data

Inner Mattapoisett Harbor: Town Dock (Station MH1)
Nitrogen, dissolved oxygen, algae, and water clarity measurements taken from Mattapoisett Town Dock. (41.656167, -70.81302)
Total Nitrogen
Dissolved Inorganic Nitrogen
Total Organic Nitrogen
Dissolved Oxygen
All Measurements
Average of Lowest 20%
Algal Pigments
Total Pigments
Water Clarity
Yearly Average
Inner Mattapoisett Harbor: Mattapoisett YMCA – Offshore (Station MH4N)
Nitrogen, algae, and water clarity measurements taken from a boat off the Mattapoisett YMCA dock. (41.651078, -70.82095)
Total Nitrogen
Dissolved Inorganic Nitrogen
Total Organic Nitrogen
Algal Pigments
Total Pigments
Water Clarity
Yearly Average
Inner Mattapoisett Harbor: Mattapoisett YMCA (Station MH4X)
Dissolved oxygen and water clarity measurements taken from shore off the Mattapoisett YMCA dock. (41.652087, -70.822839)
Dissolved Oxygen
All Measurements
Average of Lowest 20%
Water Clarity
Yearly Average
Bay Health data is funded in part by the Massachusetts Environmental Trust.
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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.

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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: