LOCATION.--Lat 42°13'49", long 74°23'35" referenced to North American Datum of 1983, Greene County, NY, Hydrologic Unit 02020005, on right bank about 400 ft upstream from Beech Ridge Brook, 0.3 mi upstream from State Highway 42 bridge, and 1.4 mi north of West Kill.
DRAINAGE AREA.--27 mi².
PERIOD OF RECORD.--Occasional miscellaneous discharge measurements, water years 1953, 1956, 1987, 1996, annual maximum gage heights only--1965-69. October 1997 to current year.
REVISIONS HISTORY.--Discharge for the period July 1, 2018, to Dec. 1, 2020, was revised on Feb. 25, 2022, based on changes to the stage-discharge rating.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 1,370.67 ft above NGVD of 1929 and 1,370.06 ft above NAVD of 1988 (VERTCON). Prior to Aug. 28, 2011, at datum 5.00 ft higher.
REMARKS.--Water Years 2014-23: Records fair except those for estimated daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 19,100 ft³/s, Aug. 28, 2011, gage height, 19.03 ft, from rating curve extended above 2,000 ft³/s on basis of slope-area measurement of peak flow; minimum discharge, 1.3 ft³/s, Aug. 19, 21, 22, 23, 24, 2002, gage height, 5.81 ft, present datum; minimum gage height, 2.30 ft, Aug. 26, 27, 2012.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum discharge, 6,500 ft³/s, Jan. 19, 1996, gage height, 16.06 ft, present datum, from floodmarks, on basis of contracted-opening measurement of peak flow.

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Peak Flow and Stage Information

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