USGS Water-Year Summary 2019
01192883 COGINCHAUG RIVER AT MIDDLEFIELD, CT
LOCATION - Lat 41°31'12.84", long 72°42'23.51" referenced to North American Datum of 1983, Middlesex County, CT, Hydrologic Unit 01080205, on right bank just upstream from Cider Mill Rd., 0.5 mi northeast of Middlefield, and 0.75 mi upstream from Wadsworth Falls.
DRAINAGE AREA - 29.8 mi².
- WDR CT-83-1: Drainage area. WDR US-2013-1: 2007, 2008, 2012 (P).
PERIOD OF RECORD - December 1980 to current year. Records for October 1961 to December 1980 at site 2.0 mi downstream published as "at Rockfall", (station 01192900) are not equivalent because of difference in drainage area.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 134.17 ft above National Geodetic Vertical Datum of 1929. Satellite telemetry at station.
PERIOD OF RECORD - Oct. 2008 to current year.