Winnapaug Pond (also known as Brightman Pond[2]) is a breached saltwater lagoon in Westerly, Rhode Island, United States, connected to Block Island Sound by the Weekapaug Breachway, which was constructed during the mid-1950s.[3][4] The 2.5-mile (4.0 km) lake is separated from the Atlantic by a large sandbar.[5][6] The Atlantic side of the sandbar is lined by beaches, including Misquamicut Beach, Atlantic Beach, and Westerly Town Beach. In 2010, its overall water quality was assessed as "good".[7] Winnapaug is relatively small and shallow, and is favorable for kayaking.[2] It is one of nine coastal lagoons, referred to as "salt ponds" by locals, in southern Rhode Island.[8][9]
| Winnapaug Pond | |
|---|---|
| Brightman Pond | |
 Weekapaug Breachway looking south | |
  Winnapaug Pond | |
| Location | Westerly, Washington County, Rhode Island, United States |
| Coordinates | 41°19′54″N 71°47′12″W / 41.331767°N 71.786734°W |
| Type | saline |
| Basin countries | United States |
| Max. length | 2.5 mi (4.0 km) |
| Surface area | .7439 sq mi (1.927 km2)[1] |