The East Branch Croton River is a river in southern New York state

New York

New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

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It rises in the town of Pawling

Pawling (town), New York

Pawling is a town in Dutchess County, New York, United States. The population was 7,521 at the 2000 census. The town is named after Catherine Pauling, the daughter of Henry Beekman, who held the second largest land patent in the county. A misprint caused the U to change to a W and the name...

 in Dutchess County

Dutchess County, New York

Dutchess County is a county located in the U.S. state of New York, in the state's Mid-Hudson Region of the Hudson Valley. The 2010 census lists the population as 297,488...

, flowing west and then south through the village of Pawling

Pawling (village), New York

Pawling is a village in Dutchess County, New York, USA. The population was 2,233 at the 2000 census. It is part of the Poughkeepsie–Newburgh–Middletown, NY Metropolitan Statistical Area as well as the larger New York–Newark–Bridgeport, NY-NJ-CT-PA Combined Statistical Area...

. It crosses into Putnam County

Putnam County, New York

Putnam County is a county located in the U.S. state of New York, in the lower Hudson River Valley. Putnam county formed in 1812, when it detached from Dutchess County. , the population was 99,710. It is part of the New York Metropolitan Area. The county seat is the hamlet of Carmel...

, flowing through the Great Swamp

Great Swamp (New York)

The Great Swamp in eastern Putnam and Dutchess counties is one of the largest wetlands in the U.S. State of New York.-Geography and ecology:...

 in the town of Patterson

Patterson, New York

Patterson is a town in Putnam County, New York, United States. The town is in the northeast part of the county. Interstate 84 passes through the southwest part of the town. The population was 11,306 at the 2000 census. The town is named after early farmer Matthew Paterson...

. It then flows south, west and southwest through the town of Southeast

Southeast, New York

Southeast is a town in Putnam County, New York, United States. The population was 17,316 at the 2000 census. The town is in the southeast part of the county. Interstate 84, Interstate 684, US Route 202, and US Route 6 pass through the town.- History :...

, passing through the East Branch Reservoir

East Branch Reservoir

East Branch Reservoir, formed by impounding the eponymous branch of the Croton River, is part of New York City's water supply network. It is located in the Putnam County town of Southeast, near the village of Brewster 35 miles north of the city....

, the village of Brewster

Brewster, New York

Brewster is a village within the town of Southeast in Putnam County, New York, United States. Its population was 2,162 at the 2000 census. The village is the most densely populated portion of the town...

, and the Diverting Reservoir

Diverting Reservoir

The Diverting Reservoir is a small reservoir that is located in the township of Southeast, New York, in Putnam County. The reservoir is immediately south of the village of Brewster, New York, and about north of New York City, which the reservoir eventually gives water to...

. Finally, it crosses into Westchester County

Westchester County, New York

Westchester County is a county located in the U.S. state of New York. Westchester covers an area of and has a population of 949,113 according to the 2010 Census, residing in 45 municipalities...

, meeting with the West Branch Croton River at the hamlet of Croton Falls

North Salem, New York

North Salem is a town in the northeast part of Westchester County, New York, United States. The county ranks second for wealthiest counties in New York State and the seventh wealthiest county nationally...

 to form the main Croton River

Croton River

The Croton River is a river in southern New York that begins where the East and West Branches of the Croton River meet a little way downstream from the Croton Falls Reservoir...

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