LOCATION--Lat 42°40’19", long 71°34’39", Middlesex County, Hydrologic Unit  01070004, on left bank, 3 ft downstream from Mill Street bridge, and 1 mi upstream from mouth at Nashua River at Pepperell.
DRAINAGE AREA--59.6 mi².
PERIOD OF RECORD--Discharge: March 2006 to current year. Intermittent discharge measurements only, water years 1971-74, 2004-05.
GAGE--Water-stage recorder with satellite telemeter. Elevation of gage, about 50 ft above National Geodetic Vertical Datum of 1929, from topographic map.
COOPERATION BY--Massachusetts Executive Office of Energy and Environmental Affairs

Photo of Nissitissit gage