LOCATION--Lat 42° 06'24", long 72° 41'58", Hampden County, Hydrologic Unit 01080206, on left bank 0.7 mi downstream from Great Brook, 3 mi east of Westfield, and 8.1 mi upstream from mouth.
DRAINAGE AREA--497 mi².
PERIOD OF RECORD--Discharge: June 1914 to current year.
Water Quality: Water years 1952–53, 1957, 1967–74, 1994.
REVISED RECORDS--WSP 601: 1924(M). WSP 756: drainage area. WSP 1051: 1919–21(M), 1925(M). WSP 1231: 1915–16(M), 1920.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 97.52 ft above NAVD 1988. Prior to May 11, 2020, datum reported as 98.25 ft above NGVD 1929. Prior to Nov. 3, 1933, on right bank at same datum.
REMARKS--Flow regulated by Borden Brook Reservoir, Cobble Mountain Reservoir since 1931, Knightville Reservoir since 1941, and Littleville Lake since 1965. High flow slightly affected by retarding reservoirs since 1963. Diversion from Little River for municipal supply of Springfield. Telephone and satellite gage-height telemeters at station.
COOPERATION BY--Massachusetts Department of Conservation and Recreation, Office of Water Resources.