Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins
  • Scheduled Maintenance Notice
    USGS will be performing maintenance on WDFN webpages beginning Tuesday, May 12.
    If you cannot access the page you are intending or are unexpectedly redirected to a different page, please reach out to wdfn@usgs.gov for assistance.

  • Explore the USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.
! This page is undergoing modernization with expected decommissioning as key features are added to the modernized pages.
Learn more about our modernization plans to find out which options will suit you best. Next Generation Monitoring Location Page is available now.
A beta version of the My Favorites page is available in WDFN. Try it out and tell us what you think at wdfn@usgs.gov

USGS 01100000 MERRIMACK RIVER BL CONCORD RIVER AT LOWELL, MA

PROVISIONAL DATA SUBJECT TO REVISION

Click to hidestation-specific text

Station operated in cooperation with the Massachusetts Department of Conservation and Recreation, Office of Water Resources.

Boating safety tips
This station managed by the Northborough MA Field Office.

Available Parameters Available Period
  
1990-10-01  2026-07-15
2007-10-01  2026-07-15







 (7)
 
  -- or --

 

 
Summary of all available data for this site
Instantaneous-data availability statement

Discharge, cubic feet per second
Most recent instantaneous value: 1730 07-15-2026   01:30 EDT
Graph of

Add up to 2 more sites and replot for "Discharge, cubic feet per second"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |

Daily discharge, cubic feet per second -- statistics for Jul 15 based on 103 water years of record more
Min
(1923)		 Most Recent
Instantaneous
Value Jul 15		 25th
percen-
tile		 Median Mean 75th
percen-
tile		 Max
(1996)
350 1730 1910 2840 3780 4290 22000

Gage height, feet, [Primary Radar]
Most recent instantaneous value: 41.89 07-15-2026   01:30 EDT
Graph of

Add up to 2 more sites and replot for "Gage height, feet, [Primary Radar]"

?
 
Note



Create presentation-quality / stand-alone graph.   Subscribe to
?
WaterAlert      

See this graph on the Monitoring Location Pages

Share this graph |