How Healthy is Your Water?

Inner Onset Bay Snapshot

78
out of 100
Bay Health Index (5-year average)
poor
fair
good
78
78
out of 100

Supporting Data

Inner Onset Bay: Onset Town Pier (OB1)
Dissolved oxygen and water clarity measurements taken from floating dock at Onset Town Pier. (41.740892, -70.659368)
Dissolved Oxygen
All Measurements
Average of Lowest 20%
Water Clarity
Yearly Average
Inner Onset Bay: South Inner Bay – East (OB3)
Nitrogen, algae, and water clarity measurements taken from private dock on the east side of the inlet to Onset Bay. (41.734355, -70.664112)
Total Nitrogen
Dissolved Inorganic Nitrogen
Total Organic Nitrogen
Algal Pigments
Total Pigments
Water Clarity
Yearly Average
Inner Onset Bay: South Inner Bay – West (OB3A)
Dissolved oxygen and water clarity measurements taken from private dock on the west side of the inlet to Onset Bay. (41.734777, -70.665905)
Dissolved Oxygen
All Measurements
Average of Lowest 20%
Water Clarity
Yearly Average
Inner Onset Bay: Wickets Island (OB6)
Nitrogen, algae, and water clarity measurements taken from a boat off the northeast shore of Wickets Island. (41.73877, -70.652306)
Total Nitrogen
Dissolved Inorganic Nitrogen
Total Organic Nitrogen
Algal Pigments
Total Pigments
Water Clarity
Yearly Average
Bay Health data is funded in part by the Massachusetts Environmental Trust.
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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.

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Top Stories on Onset Bay

Staff team hired to lead new Onset Bay Center

The Buzzards Bay Coalition is excited to announce that Katherine Garofoli and Tom Tucker have been hired to serve as the Onset Bay Center’s first Director and Program Manager.

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Flurry of construction at Onset Bay Center will swap for summer of outdoor activity

Work on the Onset Bathhouse and Wickets Island will resume in the fall, after a summer of sailing, swimming, fishing, and exploration around Onset Bay.

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Onset Bay Center moves ahead with completion of first phase of Wickets Island restoration

Wickets Island in Onset Bay is one step closer to becoming a safe and welcoming place where people of all ages can come to discover Buzzards Bay.

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: