LOCATION.--Lat 42°56'08", long
73°39'06" referenced to North American Datum of 1983,
Rensselaer County, NY, Hydrologic Unit 02020003, on left bank
at dam, 0.15 mi downstream from bridge on State Highway 67 in
Stillwater, and 0.75 mi upstream from Hoosic River.
DRAINAGE AREA.--3,773 mi².
PERIOD OF RECORD.--Occasional discharge measurements,
water years 1932-33, 1966-67. March 1977 to current year. Daily
discharge records prior to October 1981 are published with
suspended-sediment data.
GAGE.--There is no gage, since September 1992. Discharge
is estimated based on records for Hudson River at Fort Edward
(station 01327750) and Batten Kill below mill at Battenville
(station 01329490). Prior to October 1992, water-stage recorder
and crest-stage gage at datum of 78.99 ft above NGVD of 1929.
Prior to January 1978, nonrecording gages in upper pool of
Champlain (Barge) Canal Lock 4, at Barge Canal datum.
REMARKS.--Flow regulated appreciably by Great Sacandaga
Lake (station 01323500) and Indian Lake (station 01314500).
Diurnal fluctuation caused by powerplants upstream from
station. Water is diverted into St. Lawrence River basin
through Glens Falls feeder, Bond Creek, and Champlain (Barge)
Canal, and occasionally may be received from that basin through
summit level of Champlain (Barge) Canal at Dunham Basin.
Water Years 2014-22: Records poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum daily discharge,
about 52,000 ft³/s, Apr. 29, 2011; minimum daily discharge, 900
ft³/s, July 25, 1983. Maximum and minimum instantaneous
discharges not determined.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum discharge,
about 110,000 ft³/s, Mar. 28, 1913, and about 62,000 ft³/s,
Jan. 1, 1949, both on basis of comparison with nearby
stations.
PERIOD OF DAILY RECORD1.--SUSPENDED-SEDIMENT
DISCHARGE: March 1977 to March 2002.
EXTREMES FOR PERIOD OF DAILY RECORD1.--
SUSPENDED-SEDIMENT CONCENTRATION: Maximum daily mean, 450 mg/L,
Dec. 17, 2000; minimum daily mean, <1 mg/L on many days
during water years 1991-95, 1997-98; minimum daily mean since
2002 water year, <0.5 mg/L on several days during water year
2002. SUSPENDED-SEDIMENT DISCHARGE: Maximum daily, 27,500 tons,
Jan. 9, 1998; minimum daily, 3.3 tons, Jan. 4, 2002.
1 Water-Quality Records