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Water-Year Summary for Site 01184000
Time Period To NGVD29, in ft To NAVD88, in ft Jul. 5, 1928 - Apr. 12, 1983 +38.48 +37.75 Apr. 13, 1983 - Feb. 29, 1984 +28.48 +27.75 Mar. 1, 1984 - Nov. 28, 1986 +37.48 +36.75 Nov. 28, 1986 - present +28.48 +27.75Additionally, the annual water year peak gage heights published on the USGS National Water Information System (NWIS) peak streamflow website (http://nwis.waterdata.usgs.gov/ct/nwis/peak/?site_no=01184000&agency_cd=USGS) have been adjusted to the datum in use for each of the periods listed in the table below:
Time Period Gage height change, in ft Jul. 5, 1928 - Apr. 12, 1983 No change Apr. 13, 1983 - Feb. 29, 1984 +10.00 Mar. 1, 1984 - Nov. 28, 1986 +1.00 Nov. 28, 1986 - Sep. 30, 2016 +10.00 Oct. 1, 2016 - present No change
Flow regulated by power plants, by diversion from Chicopee River Basin and by First Connecticut and Second Connecticut Lakes, Lake Francis, Moore and Comerford Reservoirs, Quabbin Reservoir, and other reservoirs, combined usable capacity, about 107 billion ft³.