PROVISIONAL DATA SUBJECT TO REVISION
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Site Information
LOCATION.--Lat 42°56'18.9", long
73°22'37.0" referenced to North American Datum of
1983, Rensselaer County, NY, Hydrologic Unit 02020003, on right
bank 0.5 mi upstream from Case Brook, 1.2 mi downstream from
Walloomsac River, and 1.2 mi southeast of Eagle Bridge.
DRAINAGE AREA.--510 mi².
PERIOD OF RECORD.--August 1910 to March 1922, July 1923 to current year.
REVISIONS HISTORY.--WSP 741: Drainage area. WSP 756: 1913(m). WSP 1302: 1922(M). WSP 1432: 1913 (minimum gage height). WSP 1502: 1911-12, 1914, 1920-21, 1928(M), 1936(M).
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 355.41 ft above NGVD of 1929 and 354.79 ft above NAVD of 1988. Prior to March 1922, nonrecording gage, and July 24, 1923 to July 18, 1936, water-stage recorder, at site 0.2 mi upstream at different datums.
REMARKS.--Diurnal fluctuation at medium and low flow caused by powerplants upstream from station.
Water Years 2014-17, 2019-23: Records fair except those for estimated daily discharges, which are poor. Water Year 2018: Records fair except those for estimated daily discharges and Jan. 12 to June 11, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 55,400 ft³/s, Dec. 31, 1948, gage height, 21.15 ft, from floodmark in gage house, from rating curve extended above 30,000 ft³/s on basis of flow over downstream dams and contracted-opening measurements of peak flow; minimum discharge, 24 ft³/s, Sept. 14, 1913.
DRAINAGE AREA.--510 mi².
PERIOD OF RECORD.--August 1910 to March 1922, July 1923 to current year.
REVISIONS HISTORY.--WSP 741: Drainage area. WSP 756: 1913(m). WSP 1302: 1922(M). WSP 1432: 1913 (minimum gage height). WSP 1502: 1911-12, 1914, 1920-21, 1928(M), 1936(M).
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 355.41 ft above NGVD of 1929 and 354.79 ft above NAVD of 1988. Prior to March 1922, nonrecording gage, and July 24, 1923 to July 18, 1936, water-stage recorder, at site 0.2 mi upstream at different datums.
REMARKS.--Diurnal fluctuation at medium and low flow caused by powerplants upstream from station.
Water Years 2014-17, 2019-23: Records fair except those for estimated daily discharges, which are poor. Water Year 2018: Records fair except those for estimated daily discharges and Jan. 12 to June 11, which are poor.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 55,400 ft³/s, Dec. 31, 1948, gage height, 21.15 ft, from floodmark in gage house, from rating curve extended above 30,000 ft³/s on basis of flow over downstream dams and contracted-opening measurements of peak flow; minimum discharge, 24 ft³/s, Sept. 14, 1913.
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