Little Missouri River River Levels

Last Updated: December 24, 2025

The Little Missouri River is a tributary of the Missouri River that stretches 560 miles through Wyoming, South Dakota, and North Dakota.


Summary

Total streamflow across the Little Missouri River was last observed at 510 cfs, and is expected to yield approximately 1,012 acre-ft of water today; about 181% of normal. River levels are high. Average streamflow for this time of year is 282 cfs, with recent peaks last observed on 2011-05-26 when daily discharge volume was observed at 85,700 cfs.

Maximum discharge along the river is currently at the Little Missouri River Nr Watford City reporting a streamflow rate of 510 cfs. This is also the highest stage along the Little Missouri River, with a gauge stage of 9.07 ft at this location. This river is monitored from 4 different streamgauging stations along the Little Missouri River, the highest being situated at an altitude of 2,691 ft, the Little Missouri River At Marmarth.

River Details

Last Updated 2025-12-18
Discharge Volume 1,012 ACRE-FT
Streamflow 510.0 cfs
+157.0 cfs (+44.48%)
Percent of Normal 181.08%
Maximum 85,700.0 cfs
2011-05-26
Seasonal Avg 282 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Little Missouri River At Marmarth
USGS 06335500
12 cfs 2.11 ft -63.25
Little Missouri River At Medora
USGS 06336000
64 cfs 5.08 ft 7.02
Little Missouri River Nr Watford City
USGS 06337000
510 cfs 9.07 ft 44.48
Little Missouri River Near Langley
USGS 07360200
26 cfs 3.48 ft -4.36
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Little Missouri River, or Little Mo, is a 147-mile-long (237 km) waterway that runs from the Ouachita Mountains of southwest Arkansas into the rolling hills area in the surrounding countryside.