LOCATION.--Lat 41°20'17.3", long
73°46'07.3" referenced to North American Datum of
1983, Westchester County, NY, Hydrologic Unit 02030101, on left
bank 30 ft upstream from bridge on State Highway 6, and 0.7 mi
southwest of Baldwin Place.
DRAINAGE AREA.--13.5 mi².
PERIOD OF RECORD.--Occasional low-flow and/or
miscellaneous discharge measurements, water years 1954,
1976-77. October 1995 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Datum
of gage is 499.11 ft above NGVD of 1929 and 498.21 ft above
NAVD of 1988.
REMARKS.--Occasional seasonal regulation by Kirk Lake
and Lake Mahopac.
Water Years 2014-15: Records good except those for estimated
daily discharges, which are poor.
Water Years 2016-23: Records fair except those for estimated
daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,020
ft³/s, Sept. 16, 1999, gage height, 9.42 ft; minimum discharge,
0.05 ft³/s, Sept. 4, 5, 2022, gage height, 3.44 ft.