LOCATION--Lat 42°40’17", long 71°08’59", Essex County, Hydrologic Unit 01070002, on left bank at upstream side of Balmoral Street bridge, and 3 mi upstream from mouth at Andover.
DRAINAGE AREA--72.8 mi².
PERIOD OF RECORD--October 2006 to current year.
GAGE--Data Collection Platform with satellite telemeter. Datum of gage is 34.20 ft above NAVD 1988, estimated from topographic map. Datum previously reported as 35 ft above NGVD 1929, estimated from topographic map.
REMARKS--Flow affected by upstream withdrawals for municipal water supplies of many towns.
COOPERATION BY--Town of Andover.

The precipitation data for this station are temporary and will only be displayed for 120 days. Time series of 15-minute or cumulative daily values WILL NOT be available for retrieval following the 120-display period. Although the instrumentation is calibrated at least once/year, the temporary classification means that documented routine inspections and other quality assurance measures are not performed that would make the data acceptable for archival, retrieval, or future use in general scientific or interpretive studies. The preciptation gage is operated seasonally, from April to November.