Lake Peekskill is a reservoir

Reservoir

A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

 located in the town of Putnam Valley

Putnam Valley, New York

Putnam Valley is a town in Putnam County, New York, United States. The population was 10,686 at the 2000 census. Its location is northeast of New York City.The Town of Putnam Valley is in the southwest part of Putnam County...

 in 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...

, New York

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...

. The lake, which was originally called Lower Cranberry Pond before being dammed, was developed in the 1920s by McGolrick Co., with summer cottages being sold to New York City

New York City

New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...

residents. Now, however, most residents are year-round inhabitants. There are three private beaches on the lake: North Beach, Singers Beach and Carraras Beach. Recreational attractions included a large community loghouse, Camp Pecoho and a casino.