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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.

01097000 ASSABET RIVER AT MAYNARD, MA
Middlesex County, Massachusetts
Hydrologic Unit Code 01070005
Latitude  42°25'55", Longitude  71°27'01" NAD27
Drainage area 116  square miles
Contributing drainage area 116  square miles
Gage datum 146 feet above NAVD88
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Graph of streamflow measurement data at USGS 01097000 ASSABET RIVER AT MAYNARD, MA
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