River ME

Little Southwest Branch Saint John River

Maine • 46.3007, -70.1323

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

31 mi

50 km

Elevation

1,624′ → 1,185′

439 ft drop

Stream Order

Stream

Slope

0.27%

14.2 ft/mi

Drainage

83 mi²

214 km²

Avg Flow

-- cfs

0.7 mph velocity

Path to Mouth

364 mi

585 km to ocean

Classification

Tributary

Mid-reach

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

Rain Radar