CATSKILL SYSTEM RESERVOIRS

DELAWARE SYSTEM
RESERVOIRS

Ashokan Schoharie Rondout Neversink Pepacton Cannonsville
Year Completed 1915 1926 1951 1953 1954 1965
Elevation (feet) 580 1,120 840 1,440 1,280 1,150
Stream Dammed Esopus Creek Schoharie Creek Rondout Creek Neversink River East Branch Delaware R. West Branch Delaware R.
County(s) Ulster Greene Schoharie Delaware Ulster Sullivan Sullivan Delaware Delaware
Miles from NYC 75 miles
north		 115 miles
north		 75 miles
northwest		 80+ miles
northwest		 100+ miles
northwest		 120+ miles
northwest
Dam Name, Length & Height Olive Bridge
4,650'
210'		 Gilboa
2,000'
182'		 Merriman
2,400'
195'		 Neversink
2,820'
195'		 Downsville
2,450'
204'		 Stilesville
2,800'
175'
Watershed Area
(sq. miles)		 253 316 95 93 370 454
Capacity
(billion gals.)		 123 17.6 49.6 34.9 140.2 95.7
Length (miles) 12 5.8 7.5 5 18.5 16
Max. depth (feet) 190 150 175 175 180 140
Tunnel exiting Catskill Aqueduct Shandaken
Tunnel		 Delaware Aqueduct Neversink Tunnel East Delaware Tunnel West Delaware Tunnel
Tunnel
Goes to		 Kensico Reservoir Ashokan Reservoir
via Esopus Cr.		 West Branch Reservoir Rondout Reservoir Rondout Reservoir Rondout
Reservoir
Villages Flooded 11 1 3 3 4 6

The Catskill System provides 40% of the City's daily water demand, about 650 million gallons.

The Delaware System provides roughly 50% of the City's water, about 890 million gallons per day.

LESSON 4 SUMMARY | WATER SUPPLY SYSTEM MAP | LOST VILLAGES MAPS
ACTIVITY 1 | WATER RESOURCES HOME