Starting at Halfway Pond in Plymouth, the freshwater Agawam River flows through forests and cranberry bogs on its way toward Wareham. The Agawam River is home to one of Buzzards Bay’s largest populations of river herring, which migrate upstream each spring to spawn in fresh water. The weir at Route 28 separates the freshwater portion of the Agawam River from the tidal estuary.
Agawam River – Fresh Snapshot
The Buzzards Bay Coalition does not calculate a Bay Health Index score for Agawam River – Fresh because it is a freshwater location. The Bay Health Index is only used to measure the health of coastal waters, including harbors, coves, and tidal rivers.
Supporting Data
There is one sampling station on the freshwater portion of the Agawam River: Cranberry Highway (AG3).
Agawam River – Fresh: Cranberry Highway (Station AG3)
Nitrogen, dissolved oxygen, algae, and water clarity measurements taken from shore at Cranberry Highway (Route 6) on the north side of the culvert. (41.76261, -70.67575)
Total Nitrogen
Dissolved Inorganic Nitrogen
Total Organic Nitrogen
Dissolved Oxygen
All Measurements
Average of Lowest 20%
Algal Pigments
Total Pigments
Water Clarity
Yearly Average
Bay Health data is funded in part by the Massachusetts Environmental Trust.
