Department of Environmental Conservation

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Map of New York's Great Lakes Basin

This map shows the Great Lakes basin, or watershed, in New York. The green shaded area is New York's Great Lakes basin. Water in the basin flows to Lake Ontario, Lake Erie, the Niagara River, and the St. Lawrence River.

Note: This map is not used for regulatory purposes such as permitting, registration and reporting requirements for water withdrawal systems in New York State. For more information about the requirements for water withdrawal systems, visit DEC's Water Withdrawal, Conservation & Drought webpage.

Map of the Great Lakes basin in New York