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Water-Year Summary for Site 01189000

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00060 Discharge(Mean)  

Water year 2021: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2021
LOCATION - Lat 41°40'23", long 72°54'04" referenced to North American Datum of 1927, Hartford County, CT, Hydrologic Unit 01080207, on left bank 500 ft upstream from bridge on Central St., 0.2 mi downstream from Copper Mine Brook, and 6.5 mi upstream from mouth.
DRAINAGE AREA - 45.8 mi².
REVISIONS HISTORY - WSP 971: 1941-42. WSP 1111: 1947. WSP 1901: 1959-60. WDR-CT-83-1: Drainage area.
PERIOD OF RECORD - Continuous discharge: July 1941 to September 2009, March 2017 to current year. October 2010 to September 2012 (annual peak only). October 2012 to September 2013 (gage heights and discharge measurements only). Water-quality records: Water years 1956, 1960, 1971-72.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 196.83 ft above North American Vertical Datum of 1988 (197.72 ft above National Geodetic Vertical Datum of 1929). Satellite telemetry at station.
REMARKS - Flow regulated by Whigville Reservoir and mills upstream. Diversion for municipal supply of City of New Britain from Whigville Reservoir, Whites Bridge wells, and Copper Mine Brook.
  • April 29, 2016 - Sept. 30, 2016: Records fair
  • Water Year 2017: Records fair except for periods of estimated discharges, which are poor. 
  • Water Years 2018-2020: Records fair.
  • EXTREMES OUTSIDE PERIOD OF RECORD - Flood of September 1938 reached a stage of about 7.3 ft, from floodmarks, discharge, 3,800 ft³/s, on basis of slope-area measurement of peak flow and computation of peak flow over dam.