LOCATION.--Lat 42°38'01.1", long
73°48'15.4" referenced to North American Datum of
1983, Albany County, NY, Hydrologic Unit 02020006, on left bank
0.35 mi upstream from bridge on Normans Kill Road at
Normansville, and 0.40 mi upstream from Delaware Avenue bridge,
in Albany.
DRAINAGE AREA.--168 mi².
PERIOD OF RECORD.--Occasional low-flow and/or
miscellaneous discharge measurements, water years 1949, 1952,
1954, 1959, 1962-65, 1985. Annual maximum only--1984,
1992-2012, 2014-15. May 1979 to April 1983, July 2012 to
February 2014, May 2015 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Datum
of gage is 85.86 ft above NAVD of 1988.
REMARKS.--Water Years 2014-21: Records good except those
for estimated daily discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge,
13,200 ft³/s, Aug. 28, 2011, gage height, 14.15 ft; minimum
discharge, 7.2 ft³/s, Sept. 30, 2019, gage height, 2.69
ft; minimum gage height, 2.66 ft, on several days in September
2020.
PERIOD OF DAILY RECORD1.--SUSPENDED-SEDIMENT
DISCHARGE: August to September 2011, July 2012 to February 2014
(discontinued).
REMARKS1.--Turbidity data are collected every
5 minutes (15 minutes during the 2012 water year) using an in
situ turbidity probe located about 1,500 ft downstream.
Beginning in the 2012 water year, daily suspended load and
concentration derived from a regression equation relating
turbidity and streamflow to suspended-sediment
concentration.
EXTREMES FOR PERIOD OF DAILY
RECORD1.--SUSPENDED-SEDIMENT CONCENTRATION:
Maximum daily mean, 2,280 mg/L, Aug. 28, 2011; minimum daily
mean, 2 mg/L, July 19, 20, 22, 2012.
SUSPENDED-SEDIMENT DISCHARGE: Maximum daily, about 42,300 tons,
Aug. 28, 2011; minimum daily, 0.17 tons, Sept. 16, 17,
2012.
1 Water-Quality Records
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