River MT

Sun River

Montana • 47.5483, -112.1256

Hydrography profile Updated Feb 1, 2026

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

107 mi

172 km

Elevation

4,735′ → 3,311′

1,424 ft drop

Stream Order

Large River

Slope

0.25%

13.3 ft/mi

Drainage

1,823 mi²

4,720 km²

Avg Flow

-- cfs

1.4 mph velocity

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

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

Data from USGS & NOAA for informational purposes only. More

Water Level Gauges on Sun River

There are 4 USGS water level monitoring stations on Sun River providing real-time flow and stage data.