LOCATION.--Lat 42°35'58", long 74°20'10" referenced to North American Datum of 1983, Schoharie County, NY, Hydrologic Unit 02020005, on downstream right bank at bridge at intersection of State Highways 30 and 145 in Middleburgh.
DRAINAGE AREA.--534 mi².  
PERIOD OF RECORD.--July 1927 to September 1939, December 2017 to current year. August 1906 to June 1918 in reports of New York State engineer and surveyor. Records for July 1918 to June 1927 also collected by State engineer and surveyor but not published.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 612.48 ft above NAVD of 1988.
REMARKS.--Water Years 2018-21: Records fair except those for estimated daily discharges and those above 30,000 ft³/s, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 53,500 ft³/s, Dec. 25, 2020, gage height, 19.69 ft, from rating curve extended above 19,000 ft³/s; minimum discharge, 2.0 ft³/s, Sept. 1, 1939, gage height, 0.50 ft.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum discharge, about 130,000 ft³/s, Aug. 28, 2011, gage height, 27.31 ft, from floodmarks. Flood of Jan. 19-20, 1996, reached a stage of 23.01 ft, from floodmark. Flood of Apr. 4-5, 1987, reached a stage of 22.52 ft, from floodmark.

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