Weir River (Massachusetts) Information
Weir River at Hull looking east
|Length||4 mi (6.4 km)|
|Basin size||Hingham-Weir River Basin|
Weir River is a short stream and estuary that empties into Hingham Bay, part of Boston Harbor in Massachusetts, United States. The name is attributed to the location of a fishing weir in the stream.  The river gives its name to a larger watershed and Weir River Farm, a park and nature reserve owned by The Trustees of Reservations.  
Weir River is formed at the confluence of Crooked Meadow River and Fulling Mill Brook in Hingham near the intersection of Free Street and Massachusetts Route 228 which are fed by Cushing Pond, Fulling Mill Pond, and the wetlands around Jacob's Meadow. The river flows north through Hingham and is joined by Tower Brook and Accord Brook in its first mile (1.6 km), then gradually turns northeast and travels another 1.4 miles (2.3 km) before being dammed to form Foundry Pond.  The dam marks the southern boundary of the estuary, which is one of 30 areas designated by the Commonwealth of Massachusetts as an Area of Critical Environmental Concern.  The estuary is split in two segments and extends over 1 mile (1.6 km) both east and north, forming the border between Hingham and the town of Hull to the north. On the west side of Weir River estuary lies World's End, another Trustees of Reservations park. The estuary reaches Hingham Bay at the north side of the World's End peninsula. In 2005, the Commonwealth of Massachusetts designated the Weir River Watershed as "high stressed",  meaning the rate of dewatering, from seasonal low precipitation and water supply withdrawals, exceeds the rate of recharge, from natural rainfall, for extended periods during the year. The Weir River Watershed Association  is the non-profit organization charged with stewardship of the Weir River.
- "Weir River". Geographic Names Information System. United States Geological Survey. Retrieved 23 January 2011.
- Reardon, Matthew (2010). Weymouth and Weir River Basin 2004 Water Quality Assessment Report (PDF). Worcester, Massachusetts: Massachusetts Department of Environmental Protection. Archived from the original (PDF) on January 13, 2011.
- "Weir River Farm". The Trustees of Reservations. Retrieved 23 January 2011.
- "Weir River". ACEC Designations. Commonwealth of Massachusetts. Archived from the original on January 10, 2011. Retrieved 23 January 2011.
- "Analysis-Mass.gov". Commonwealth of Massachusetts. Retrieved 12 March 2014.
- "Weir River Watershed Association". weirriver.org. Retrieved 23 January 2011.
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