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


Page Loading - Please Wait...

Click to hideNews Bulletins

Streamflow Measurements for the Nation

! Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

USGS 01097050 ASSABET RIVER AT MAIN ST NEAR CONCORD, MA
Middlesex County, Massachusetts
Hydrologic Unit Code 01070005
Latitude  42°27'23", Longitude  71°23'26" NAD27
Drainage area 121  square miles
Gage datum 117 feet above NAVD88
Output formats
HTML table with channel data
HTML table without channel data
Tab-separated data with channel data
Tab-separated data without channel data
Graph of data
Reselect output format
Meas.
Number		   Date       Time Time
Datum		 Measurement
Used?		   Who Measuring
Agency		 Stream
flow
(ft3/s)		 Gage
Height
(ft)		 GH
Change
(ft)		 Meas.
Duration
(hr)		 Meas.
Rated		   Control Flow
Adjust.
Code 
152002-05-31 09:47EDTYesbosUSGS1798.530.001.30Good NONE
142001-08-31 13:50EDTYesjswUSGS32.87.250.000.50GoodClearNONE
132001-07-25 10:25EDTYesjfwUSGS44.07.450.000.50GoodClearNONE
122001-06-28 10:30EDTYesjfwUSGS1268.220.000.50GoodClearNONE
112001-05-21 15:30EDTYesjfwUSGS81.27.740.000.50GoodClearNONE
101992-09-17 09:47EDTYesCSUSGS21.211.500.000.80Good NONE
91992-08-25 -- ----Yes?USGS91.3 Unspecified NONE
81992-07-29 -- ----Yes?USGS51.0 Unspecified NONE
71991-09-12 15:00EDTYesLOUSGS51.711.200.000.60Unspecified NONE
61991-07-18 08:04EDTYesJZUSGS36.910.45 Unspecified NONE
51991-07-12 09:00EDTYesPLPUSGS62.617.27 Unspecified NONE
41990-08-31 -- ----Yes?USGS75.3 Unspecified NONE
31990-08-03 -- ----Yes?USGS40.3 Unspecified NONE
21990-07-19 -- ----Yes?USGS49.3 Unspecified NONE
11968-12-11 -- ----Yes?USGS160 Unspecified NONE