This station is operated in cooperation
N.Y. State Department of
Lat 42°19'50", long 73°44'38"
referenced to North American Datum of 1983, Columbia County, NY,
Hydrologic Unit 02020006, on right bank just downstream from Rossman
Road bridge, 1.0 mi upstream from Claverack Creek, and 2.25 mi
downstream from Stuyvesant Falls, in Rossman.
PERIOD OF RECORD.--
March 1906 to June 1911, July 1911 to May
1914 (fragmentary, monthly discharge only for some periods, published
in WSP 1302), July 1928 to September 1968, annual maximum only--1984,
1988-2011, August 2011 to current year.
Water-stage recorder and crest-stage gage. Datum of gage
is 24.78 ft above NGVD of 1929. Prior to May 1914, at same site at
different datum, and 1928-1962 water years, at same site at datum 1.00
Records fair except those for estimated daily
discharges, which are poor. Diurnal fluctuation and considerable
regulation at low and medium flow caused by power plants above station.
Satellite gage-height telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 29,800
/s, Dec. 31, 1948, gage height, 20.8 ft, present datum,
from floodmarks; minimum discharge not determined.
PERIOD OF DAILY RECORD1.--
DISCHARGE: August 2011 to current year.
EXTREMES FOR PERIOD OF DAILY
SUSPENDED-SEDIMENT CONCENTRATION: Maximum
daily mean, 1,070 mg/L, Aug. 28, 2011; minimum daily mean, 1 mg/L, Nov.
26, Dec. 1, 2, 2012.
SUSPENDED-SEDIMENT DISCHARGE: Maximum daily, 27,900 tons, Aug. 29,
2011; minimum daily, 0.44 tons, July 4, Aug. 9, 2012.
1 Water-Quality Records
Peak Flow and Stage Information