River ID

Middle Fork Saint Maries River

Idaho • 46.9681, -116.1882

Reviewed mapped path Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

15 mi

24 km

Elevation

4,555′ → 2,815′

1,740 ft drop

Stream Order

Medium River

Slope

2.23%

117.9 ft/mi

Drainage

69 mi²

179 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

857 mi

1,379 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