Funding for this site is provided by:
40°50'58", long 73°13'27" referenced to North
American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030201,
on left bank 0.5 mi downstream from New Mill Pond, 1.0 mi southwest of
Smithtown, and 1.5 mi southwest of Village of Smithtown Branch.
PERIOD OF RECORD.--
October 1943 to current year.
WSP 1141: Drainage area.
Water-stage recorder and concrete control. Datum of gage
is 9.59 ft above NGVD of 1929.
Occasional regulation caused by cleaning of fish
screens and trash racks at outlet of New Mill Pond on main stream and
ponds on tributaries above station. Satellite gage-height telemeter at
Water years 2014-16: Records good.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 952 ft³/s,
Jan. 22, 1979, gage height, 3.22 ft, result of dam failure; minimum
discharge, 16 ft³/s, June 5, 6, 1967; minimum gage height, 0.46 ft,
Feb. 9, 1951.
Peak Flow and Stage Information