LOCATION--Lat 42° 04’58", long 72° 03’27", Worcester County, Hydrologic Unit 01100001, on right bank 200 ft downstream from Westville Dam,  1.0 mi upstream from McKinstry Brook, and 1.3 mi west of Southbridge.
DRAINAGE AREA--94.4 mi².
PERIOD OF RECORD-- October 1962 to current year (data publication discontinued from October 1, 1990 to September 30, 2002).
REVISED RECORDS--WDR MA-RI-75-1: 1963-64 (monthly runoff). WDR MA-RI-84-1: drainage area.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 510.64 ft above NAVD 1988, from U.S. Army Corps of Engineers benchmark. Prior to May 8, 2020, datum reported as 511.33 ft above NGVD 1929, from U.S. Army Corps of Engineers benchmark.
REMARKS-- Flow regulated by mills, by East Brimfield and Westville Lakes, and by other reservoirs upstream.
COOPERATION BY--U.S. Army Corps of Engineers