LOCATION--Lat 42°15’36", long 71°27’25", Middlesex County, Hydrologic Unit 01070005, on left downstream side of bridge on Front Street, 0.5 mi east of Main Street in Ashland.
DRAINAGE AREA--35.1 mi².
PERIOD OF RECORD--Discharge: May 1994 to October 1995; October 2006 to current year.
Water-quality records: April 1994 to September 1995.
GAGE--Water-stage recorder with telephone telemeter. Elevation of gage, about 185 ft above National Geodetic Vertical Datum of 1929, from topographic map.
COOPERATION BY--Massachusetts Executive Office of Energy and Environmental Affairs