This station is operated in cooperation
Brookfield Renewable Power
Lat 44°50'20", long 74°58'44"
referenced to North American Datum of 1983, St. Lawrence County, NY,
Hydrologic Unit 04150305, on right bank 250 ft upstream from bridge on
Grant Road at Raymondville, 0.3 mi downstream from Trout Brook, 0.4 mi
downstream from powerplant, and 18.0 mi upstream from mouth.
PERIOD OF RECORD.--
November 1943 to current year.
WDR NY-82-1: Drainage area. WDR NY-85-1:
Water-stage recorder and crest-stage gage. Datum of gage
is 183.33 ft above NGVD of 1929.
Records good except those for estimated daily
discharges, which are poor. Extensive diurnal fluctuation caused by
power and industrial operations. Flow regulated since 1953 by Carry
Falls Reservoir, about 46 mi upstream, and by powerplant, 0.4 mi
upstream; considerable natural storage in large lakes upstream from
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 14,100
/s, May 4, 2011, gage height, 8.72 ft; maximum gage
height, 9.24 ft, Feb. 22, 1954 (ice jam); minimum discharge, 2.2
/s, Sept. 18, 19, 1966; minimum gage height, 0.42 ft,
July 13, 1950.
Peak Flow and Stage Information