LOCATION.--Lat 43°04'08", long
74°59'18" referenced to North American Datum of 1983,
Herkimer County, NY, Hydrologic Unit 02020004, on right bank
600 ft downstream from bridge on old State Highway 28 at Kast
Bridge, 1.2 mi downstream from North Creek, 2.2 mi north of
Herkimer, and 4.0 mi upstream from mouth.
DRAINAGE AREA.--560 mi².
PERIOD OF RECORD.--January 1907, April to December 1907,
March 1908 to December 1909, April 1910 to December 1911
(monthly discharges only, published in WSP 1302), January 1912
to December 1913, April 1914 to June 1918 (monthly discharges
only for most months, published in WSP 1302), October 1920 to
current year. Record prior to October 1920 furnished by State
engineer and surveyor of New York.
REVISIONS HISTORY.--WDR NY-85-1: Drainage area.
GAGE.--Water-stage recorder and crest-stage gage. Datum
of gage is 438.99 ft above NGVD of 1929 and 438.48 ft above
NAVD of 1988 (VERTCON). Prior to Sept. 18, 1920, nonrecording
gage at former highway bridge 500 ft upstream at different
datum. Sept. 18, 1920 to Oct. 23, 1985, at site on left bank at
REMARKS.--Since March 1914, flow regulated by Hinckley
Reservoir, 31 mi upstream from station (usable capacity, 3,320
mil ft³). Diurnal fluctuation at low and medium flow caused by
powerplants upstream from station. Diversion at Trenton Falls,
26 mi upstream from station, by Ninemile feeder since 1915
during canal navigation season. Diversion from Hinckley
Reservoir for Utica water supply returned to Mohawk
Water Years 2014-20: Records good except those for estimated
daily discharges, which are poor. Water Year 2021:
Records fair except those for estimated daily discharges,
which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, since
construction of Hinckley Reservoir in 1914, 27,500
ft³/s, Oct. 31, 2019, gage height, 10.94 ft; minimum
discharge, 20 ft³/s, Sept. 3, 1929, gage height, 0.90 ft.
EXTREMES FOR PERIOD PRIOR TO REGULATION.--Maximum
discharge, prior to construction of Hinckley Reservoir in 1914,
23,300 ft³/s, Mar. 26, 1913, from reports of State engineer and
surveyor of New York.