River NY

Middle Branch Oswegatchie River

New York • 44.0316, -75.1043

Hydrography profile Updated Jan 19, 2026

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USGS and NOAA data is for informational purposes. Source notes

Length

44 mi

71 km

Elevation

2,093′ → 827′

1,266 ft drop

Stream Order

Medium River

Slope

0.54%

28.6 ft/mi

Drainage

116 mi²

300 km²

Avg Flow

219 cfs

1.4 mph velocity

Path to Mouth

244 mi

392 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

Rain Radar