LOCATION.--Lat 42°38'52.5", long
        73°50'45.6" referenced to North American Datum of
        1983, Albany County, NY, Hydrologic Unit 02020006, at center of
        downstream side of bridge on New Scotland Road at Karlsfeld,
        0.1 mi downstream from State Highway 85, 0.7 mi west of
        Normanskill, and 1.7 mi northeast of Slingerlands.
        DRAINAGE AREA.--163 mi².
        PERIOD OF RECORD.--Occasional miscellaneous discharge
        measurements, water years 1955, 1991-92, 2019. June 2015 to
        current year (gage height only).
        REVISIONS HISTORY.--Gage height for the period Nov. 3,
        2021 to July 19, 2023, were revised on Mar. 8, 2024, based on
        changes to the gage datum.
        GAGE.---Water-stage recorder and crest-stage gage. Datum
        of gage is 85.86 ft above NAVD of 1988.
        EXTREMES FOR PERIOD OF RECORD.--Maximum gage
        height, 20.79 ft, Dec. 19, 2023; minimum gage height, 7.71
        ft, Jan. 1, 2018.