New York dams in the Catskill and Delaware systems… Dam/Reservoir Maximum Total embankment Year Reservoir Normal Drainage dam height length completed surface storage area area volume (ha) (m3) (km2) (m) (m) Olive Bridge dam/ Ashokan reservoir 77 1417 1916 3364 484M 666 Gilboa dam/ Schoharie reservoir 56 692 1926 462 83M 813 Merriman dam/ Rondout reservoir 59 732 1951 841 190M 246 Neversink dam and reservoir 58 747 1953 598 138M 233 Downsville dam/ Pepacton reservoir 62 732 1954 2306 566M 964 Cannonsville dam and reservoir 53 853 1964 4800 371M 1166