Controlled lake

In its general sense it describes a lake or reservoir which has its water level controlled by some form of dam.

In the specific, it refers to three small lakes within the New York City water supply system's Croton Watershed lying within central Putnam County in the state's far southwestern corner.

The three lakes fall under the jurisdiction of the New York City Department of Environmental Protection's Bureau of Water Supply, which manages, operates and protects the city's upstate water supply system.

[2] Recreational use of the controlled lakes falls under DEP regulations; its guidelines and requirements are listed here.

These regulations do not apply to Kirk Lake which allows recreational fishing, boating, and swimming without a permit.

Kerr Lake on the Roanoke River in Mecklenburg County, Virginia, is a manmade lake controlled by a dam
The water level of Lake Coeur d'Alene in Idaho is controlled by the downstream Post Falls Dam
Lake Gleneida in Carmel, New York , is one of the New York City water supply system 's three controlled lakes