Scituate Reservoir

Scituate Reservoir
shoreline in early autumn
Scituate Reservoir Show map of Rhode Island Scituate Reservoir Show map of the United States
Location	Scituate, Providence County, Rhode Island, United States
Coordinates	41°46′21″N 71°36′39″W / 41.7724732°N 71.6108501°W / 41.7724732; -71.6108501[1]
Type	Reservoir
Primary inflows	North Branch Pawtuxet River Moswansicut River Ponaganset River
Primary outflows	North Branch Pawtuxet River
Catchment area	94 sq mi (240 km2)
Basin countries	United States
Max. length	7 mi (11 km)
Max. width	2.5 mi (4.0 km)
Surface area	5.3 sq mi (14 km2)
Average depth	32 ft (9.8 m)
Max. depth	87 ft (27 m)
Water volume	39×10^9 US gal (150,000,000 m3).
Shore length1	66 mi (106 km)
1 Shore length is not a well-defined measure.

The Scituate Reservoir is the largest inland body of water in the state of Rhode Island. It has an aggregate capacity of 39 billion US gallons (150,000,000 m³) and a surface area of 5.3 square miles (14 km²). It and its six tributary reservoirs—which make up a total surface area of 7.2 square miles (19 km²)—supply drinking water to more than 60 percent of the state population, including Providence.

The surrounding drainage basin that provides water to the reservoir system covers an area of about 94 square miles (240 km²), which includes most of the town of Scituate and parts of Foster, Glocester, Johnston, and Cranston. The Scituate Reservoir is operated by Providence Water Supply Board.