Ten Mile River Watershed Council 

Friends of the Shetucket River Valley

Charles River Watershed Association

Mystic River Watershed Associatio

Ipswich River Watershed Association

Neponset River Watershed Association

Friends of the Pawtuxet River

Buckeye Brook Coalition

Friends of the Moshassuck

Hunt River Watershed

Kickemuit River Watershed Council

Nashua River Watershed Association

Aquidneck River Watershed Council

Wood-Pawcatuck Watershed Association

Pawtuxet River Authority and Watershed Council

Narrow River Preservation Association

Massachusetts Watershed Coalition

Salt Ponds Watershed

Saugatucket River Watershed

Ten Mile River Watershed

Woonasquatucket River Watershed Council