LOCATION.--Lat 40°56'11", long 73°53'10" referenced to North American Datum of 1983, Westchester County, NY, Hydrologic Unit 02030101, on right bank near intersection of Nepperhan Avenue and Center Street, 1.2 mi upstream from mouth, at Yonkers.
DRAINAGE AREA.--25.6 mi².
PERIOD OF RECORD.--Continuous record--1944-89, 1993-95, annual maximum only--1999, 2003 to current year.
REVISIONS HISTORY.--WDR NY-71-1: 1965-66.
GAGE.--Crest-stage partial-record station. Datum of gage is 87.32 ft above NAVD of 1988. Prior to Aug. 17, 1978, at same site at datum 90.99 ft above NGVD of 1929, and Aug. 17, 1978 to Sept. 30, 1982, at site 1,300 ft downstream, at datum 80.10 ft above NGVD of 1929.
REMARKS.--Flow affected by diversion by City of Yonkers, Village of Tarrytown, and several industries for water supply and industrial purposes. Diurnal fluctuations caused by water supply and industrial operations.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,840 ft³/s, Apr. 16, 2007, gage height, 9.00 ft; maximum gage height, 9.61 ft, Aug. 28, 2011.

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