LOCATION.--Lat 42°32'09.1", long 77°42'14.2" referenced to North American Datum of 1983, Livingston County, NY, Hydrologic Unit 04130002, on right bank on Poags Hole Road, 0.7 mi upstream from Stony Brook, and 1.7 mi south of Dansville.
DRAINAGE AREA.--88.9 mi².
PERIOD OF RECORD.--August 1974 to current year.
REVISIONS HISTORY.--WDR NY-82-3: Drainage area. WDR NY-91-3: 1984 (P), 1986 (P). Datum of gage was revised on Dec. 19, 2022, from 715.60 ft to 714.29 ft above NGVD of 1929, based on errors in initial datum establishment and an updated geodetic survey.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 712.29 ft above NGVD of 1929 and 711.83 ft above NAVD of 1988. Prior to Aug. 21, 2002, at site 60 ft downstream at datum 2.00 ft higher. Prior to Oct. 1, 2023, at same site at datum 2.00 ft higher.
REMARKS.--Water Years 2014-24: Records fair except those for estimated daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 7,340 ft³/s, Jan. 19, 1996, gage height, 8.50 ft, from rating curve extended above 2,700 ft³/s; minimum discharge, 6.2 ft³/s, Aug. 27, 2005.

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