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USGS 01100500 MERRIMACK RIVER AT LAWRENCE, MA

  Stream Site

DESCRIPTION:
Latitude 42°42'17.4",   Longitude 71°09'11.3"   NAD83
Essex County, Massachusetts, Hydrologic Unit 010700
Drainage area: 4,672.00 square miles
Contributing drainage area: 4,458.00 square miles,
Datum of gage: 0.00 feet above   NAVD88.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2012-08-22  2025-10-24  
 Daily Data
    Gage height, feet  2012-08-22  2025-10-23  4713 
 Daily Statistics 
    Gage height, feet  2012-08-22  2025-08-05 4634 
 Monthly Statistics 
    Gage height, feet  2012-08  2025-08  
 Annual Statistics 
    Gage height, feet  2012  2025  
 Peak streamflow 1852-04-23  1951-04-05  73 
 Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP) 2020-08-28  2023-07-26  26 
 Water-Year Summary 2012  2024  13 
 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