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USGS 01100000 MERRIMACK RIVER BL CONCORD RIVER AT LOWELL, MA

  Stream Site

DESCRIPTION:
Latitude 42°38'45",   Longitude 71°17'56"   NAD27
Middlesex County, Massachusetts, Hydrologic Unit 01070006
Drainage area: 4,635 square miles
Contributing drainage area: 4,421 square miles,
Datum of gage: 4.37 feet above   NAVD88.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    1990-10-01  2025-09-27  
 Daily Data
    Discharge, cubic feet per second  1923-06-01  2025-09-26  37374 
    Suspended sediment concentration, milligrams per liter  1967-04-03  1972-09-29  1922 
    Suspended sediment discharge, short tons per day  1967-04-03  1972-09-29  2005 
 Daily Statistics 
    Discharge, cubic feet per second  1923-06-01  2024-10-23 37036 
    Suspended sediment concentration, milligrams per liter  1967-04-03  1972-09-29 1922 
    Suspended sediment discharge, short tons per day  1967-04-03  1972-09-29 2005 
 Monthly Statistics 
    Discharge, cubic feet per second  1923-06  2024-10  
    Suspended sediment concentration, milligrams per liter  1967-04  1972-09  
    Suspended sediment discharge, short tons per day  1967-04  1972-09  
 Annual Statistics 
    Discharge, cubic feet per second  1923  2025  
    Suspended sediment concentration, milligrams per liter  1967  1972  
    Suspended sediment discharge, short tons per day  1967  1972  
 Peak streamflow 1852-04-23  2020-12-27  99 
 Field measurements 1938-09-23  2025-09-23  217 
 Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP) 1953-10-19  2024-02-02  324 
 Water-Year Summary 2005  2024  20 
 Revisions  Loading...
OPERATION:
Record for this site is maintained by the USGS Massachusetts Water Science Center
Email questions about this site to Massachusetts Water Science Center Water-Data Inquiries