USGS Water-Year Summary 2021
01099500 CONCORD RIVER BELOW RIVER MEADOW BROOK AT LOWELL, MA
LOCATION - Lat 42°38'12", long 71°18'09" referenced to North American Datum of 1927, Middlesex County, MA, Hydrologic Unit 01070005, on right bank 300 ft downstream from Rogers Street Bridge at Lowell, 0.3 mi downstream from River Meadow Brook, and 0.8 mi upstream from mouth.
DRAINAGE AREA - 400 mi² of which 93 mi² probably is noncontributing.
- WDR MA-RI-84-1: Drainage area.
PERIOD OF RECORD - Discharge: October 1936 to current year. October, November 1936, monthly discharge only, published in WSP 1301. Water-quality records: water years 1953, 1967-74.
GAGE - Data Collection Platform with satellite telemeter. Datum of gage is 66.60 ft above NAVD 1988. Datum previously reported as 67.41 ft above NGVD 1929.
COOPERATION - Massachusetts Department of Conservation and Recreation, Office of Water Resources.
PERIOD OF RECORD - Water-quality records: Water years 1953, 1967-74.