River NY MA

Mill River

New York • 42.1094, -71.8773

Hydrography profile Updated Dec 27, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

23 mi

37 km

Elevation

565′ → 103′

463 ft drop

Stream Order

Medium River

Slope

0.38%

20.0 ft/mi

Drainage

49 mi²

128 km²

Avg Flow

84 cfs

0.9 mph velocity

Path to Mouth

140 mi

225 km to ocean

Classification

Headwater

Source Stream

Elevation Profile

Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

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Data from USGS & NOAA for informational purposes only. Read source and safety notes

Access Sites on Mill River

There are 3 boat ramps, launches, and public access points on Mill River.