Cannonsville Reservoir, marker

Cannonsville Reservoir is formed by damming the West Branch of the Delaware River, which continues south and becomes part of the lower Delaware River, the border between New York and Pennsylvania. It was placed into service in 1964 and holds 95.7 billion gallons at full capacity. When the water filled the valley, it consumed 19,910 acres of Delaware County; eliminating 94 farms, destroying five settlements -- Cannonsville, Granton, Rock Rift, Rock Royal and Beerston, and displacing 941 people.

Cannonsville Reservoir is one of four reservoirs in New York City’s Delaware system.

• Read the history
• More info on the marker
• More info from NYC Environmental Protection
• Learn more about the Catskill Mountains

FLT Map M28