LOCATION.--Lat 42°28'21.5", long
74°26'28.1" referenced to North American Datum of
1983, Schoharie County, NY, Hydrologic Unit 02020005, on right
bank at bridge on State Highway 30, 0.8 mi downstream from West
Brook, and 2 mi northeast of North Blenheim.
DRAINAGE AREA.--405 mi².
PERIOD OF RECORD.--November 2017 to current year.
GAGE.--Water-stage recorder and crest-stage
gage. Datum of gage is 766.54 ft above NAVD of 1988.
REMARKS.--Regulation of flow by New York Power Authority
Blenheim-Gilboa Pumped Storage Project upstream from gage.
Entire flow, runoff from 315 mi², except for periods of spill,
diverted from Schoharie Reservoir through Shandaken Tunnel into
Esopus Creek upstream from Ashokan Reservoir for water supply
of City of New York. Water Years 2018-19: Records fair except
those for estimated discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge,
18,400 ft³/s, Aug. 14, 2018, gage height, 12.42 ft;
minimum discharge, 10.5 ft³/s, Sept. 30, 2019, gage
height 1.72 ft.