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Maschaug Pond
seen from the Ocean View Highway
Location Westerly, Washington County, Rhode Island
Group Salt Ponds of Rhode Island
Coordinates 41°19′07″N 71°49′51″W / 41.3187110°N 71.8309015°W / 41.3187110; -71.8309015Coordinates: 41°19′07″N 71°49′51″W / 41.3187110°N 71.8309015°W / 41.3187110; -71.8309015
Lake type coastal lagoon, brackish
Primary inflows precipitation, groundwater
Catchment area 392.57 acres (158.87 ha)
Basin countries United States
Surface area 34.63 acres (14.01 ha)
Average depth 6.89 ft (2.10 m)

Maschaug Pond is a coastal lagoon in Westerly, Washington County, Rhode Island, United States.[1] Located at 41°19′07″N 71°49′51″W / 41.3187110°N 71.8309015°W / 41.3187110; -71.8309015 (Maschaug Pond), it is one of nine such lagoons (often referred to as "salt ponds") in southern Rhode Island.[2] A "small, brackish pond",[1] it is not permanently connected to the Block Island Sound, and is largely bordered by a golf course.[3] Nests of the federally threatened Piping Plover have been documented within the watershed.[4]

Its watershed covers 392.57 acres (158.87 ha); 52.08 acres (21.08 ha) is occupied by water. Maschaug itself has a surface area of 34.63 acres (14.01 ha), while nearby Little Maschaug Pond is 11.69 acres (4.73 ha). The pond averages 6.89 ft (2.10 m) deep, and has a salinity level of approximately 7 parts per thousand, too low to sustain the growth of eelgrass.[2][5] The pond is non-tidal, except when breached by storms.[5] The water directly receives about 57,219,222 gallons of precipitation per year, though groundwater flow is unknown. No rivers or streams flow into the pond.[6] Maschaug Pond, like others in the region, was "formed after the recession of the glaciers 12,000 years ago".[7]

As a result of certain environmental conditions, including low elevation of surrounding land and dense residential and commercial development, Maschaug Pond is considered particularly susceptible to storm surge. It is projected that during a future hurricane, Winnapaug and Maschaug Ponds will likely be significantly changed.[4]

See also


  1. ^ a b "Salt Ponds of Rhode Island". Rhode Island Sea Grant. Retrieved 2009-05-25. 
  2. ^ a b S.W. Nixon and B. A. Buckley (2007). "Nitrogen Inputs to Rhode Island Coastal Salt – Too Much of a Good Thing". Rhode Island Department of Environmental Management. Retrieved 2009-05-25. 
  3. ^ Peter Lord (January 9, 2005). "Shifting sands". The Providence Journal. Retrieved 2009-06-11. 
  4. ^ a b "Rhode Island’s Salt Pond Region: A Special Area Management Plan". Rhode Island Coastal Resources Management Council. Retrieved 2009-06-11. 
  5. ^ a b "Maschaug Pond General Features Data". Rhode Island South Shore Sea Grant. Retrieved 2009-06-11. 
  6. ^ "Maschaug Pond Freshwater Input Data". Rhode Island South Shore Sea Grant. Retrieved 2009-06-11. 
  7. ^ "What is a Salt Pond?". Salt Ponds Coalition. Retrieved 2009-06-11. 

External links

Rhode Island's salt ponds Salt Pond in Chrlestown.JPG
Point Judith PondPotter PondTrustom PondCards PondNinigret Pond • Green Hill Pond • Quonochontaug PondWinnapaug PondMaschaug Pond


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