This station is operated in cooperation
New York State Canals
Lat 43°07'31.4", long 73°35'05.7"
referenced to North American Datum of 1983, Washington County, NY,
Hydrologic Unit 02020003, on left bank 1,400 ft downstream from bridge
on U.S. Highway 4 at Thomson, and 500 ft upstream from dam at Lock 5 of
the Champlain (Barge) Canal.
PERIOD OF RECORD.--
September 2014 to current year.
Water-stage recorder and crest-stage gage. Datum of gage
is 81.65 ft above NAVD of 1988.
Flow regulated appreciably by Great Sacandaga Lake
since March 1930 (station 01323500) and Indian Lake since 1898 (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 2014-19: Records good except those for estimated daily
discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 36,400
ft³/s, Nov. 2, 2019, gage height, 24.89 ft; minimum discharge,
1,270 ft³/s, Aug. 15, 2019, gage height, 19.75 ft; minimum gage height,
19.68 ft, May 29, Sept. 9, 2015.
Peak Flow and Stage Information