| East Branch Reservoir | |
|---|---|
 | |
  East Branch Reservoir  East Branch Reservoir | |
| Location | Putnam County, New York |
| Coordinates | 41°23′49″N73°35′28″W / 41.397039°N 73.591238°W /41.397039; -73.591238 |
| Type | reservoir |
| Primary inflows | East branch of theCroton River |
| Catchment area | 75 sq mi (190 km2) |
| Basin countries | United States |
| Built | 1891 |
| Surface area | 525 acres (2.12 km2) |
| Average depth | 32 ft (9.8 m) |
| Water volume | 5.2 billion US gal (20 million m3) |
| Surface elevation | 417 ft (127 m)[1] |
East Branch Reservoir, is areservoir in the town ofSoutheast, New York, near the village ofBrewster. Part of theNew York City water supply system, it was formed byimpounding the East Branch of theCroton River. Forming part of theCroton Watershed, it was placed into service in 1891, and lies some 35 miles (56 km) north of the city, in the southeast corner ofPutnam County.
The East Branch Reservoir has a surface area of 525 acres (2.12 km2), reaches a mean depth of 32 feet (9.8 m), and holds 5.2 billion US gal (20 million m3) at full capacity. It drains a 75-square-mile (190 km2) area that includesBog Brook Reservoir. Its water flows back into the East Branch of the Croton River south of the dam, then into TheDiverting Reservoir, then via the Croton River to theMuscoot and theNew Croton reservoirs, into theNew Croton Aqueduct. Water from the aqueduct flows into theJerome Park Reservoir in theBronx for daily distribution.
One of two double reservoirs in NYC's system, it is connected to the Bog Brook impoundment via a 1,778-foot (542 m) tunnel. When the two were being built, the project's name was "Double Reservoir I". The second double reservoir project ("Double Reservoir II") would create theCroton Falls andDiverting reservoirs.
The village of Southeast Center, named for the town of Southeast, was leveled and flooded to create the reservoir. Parts of the village remain, including Sodom Road, at the foot of the Sodom Dam, which holds the reservoir back.
Construction of the reservoir also flooded part of the village ofMilltown in the northeastern corner of Southeast, near present-day Deforest Corners. Many of the village's original buildings were moved to higher ground, onto present-day Milltown Road, one of Southeast's longest roads running fromNew Fairfield, Connecticut, to Route 22 in Southeast. The village of Milltown's one-room schoolhouse still stands today as a private residence. Foundations, rock walls and roadbeds for both villages can still be seen during droughts.
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