Over 25 Years of Strengthening the Region’s Economy and Protecting Water Quality

Ashokan Reservoir, photo: Bob Tullis

Catskill Watershed Corporation Headquarters, Arkville, New York

Welcome to the Watershed!

The Catskill Watershed Corporation (CWC) is a locally based and locally staffed non-profit Local Development Corporation responsible for several environmental protection, economic development, and education programs in the New York City Watershed West of the Hudson River.

CWC’s dual mission is to preserve and strengthen the region’s economy as well as to administer a host of Watershed Protection Programs to protect the water supply for half the population of the state of New York. 90% of New York City’s water supply is unfiltered from the West of Hudson Watershed.

Our environmental protection, economic development and education programs are administered in 41 towns that lie wholly or partially within the NYC Catskill-Delaware Watershed region which supplies water to five upstate counties and 9.5 million people in New York State.


Septic Systems
Repaired or Replaced


to Local Businesses


for Education Grants

How We Help

CWC administers numerous watershed protection and partnership programs established by the New York City Watershed Memorandum of Agreement (MOA) in 1997. CWC programs are requirements of the Filtration Avoidance Determination (FAD) and its water supply permit issued by New York State Department of Environmental Conservation.

Septic Repair and Replacement

Stormwater Management

Community Wastewater

Flood Hazard Mitigation

Economic Development

Public Education

NYC Water Supply Catskill Delaware Watershed

The Catskill-Delaware Watershed

The Catskill Delaware Watershed spans across five upstate counties which include Delaware, Greene, Schoharie, Sullivan, and Ulster. Throughout the 1,597 square mile watershed, six reservoirs (Ashokan, Cannonsville, Neversink, Pepacton, Rondout, and Schoharie) provide 90% of the daily drinking water to 9.8 million residents in New York State.

The Catskill-Delaware region supports 62,000 people, thousands of businesses and hundreds of farms who all call this place home.

Ashokan Reservoir, photo: Bob Tullis