River Levels Streamgages Weather

Total streamflow across the Little Missouri River was last observed at 93 cfs, and is expected to yield approximately 183 acre-ft of water today; about 21% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 448 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 At Medora reporting a streamflow rate of 55.6 cfs. However, the streamgauge with the highest stage along the river is the Little Missouri River Nr Watford City with a gauge stage of 7.01 ft. 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.

The Little Missouri River is a tributary of the Missouri River that stretches 560 miles through Wyoming, South Dakota, and North Dakota. The river was named by French trappers who explored the region in the 18th century. The river's hydrology is characterized by a wide range of flow rates, from low during dry periods to intense flash flooding during rainy seasons. The Carter Lake Dam in Wyoming and a series of four dams in North Dakota, including the Theodore Roosevelt Dam, manage the river's flow for agricultural and recreational purposes. The river's scenic beauty and diverse wildlife attract tourists for activities like fishing, camping, and hiking. The Little Missouri River is also a source of irrigation for crops such as wheat and soybeans.

July 20, 2024







Last Updated 2024-07-20
Discharge Volume 183 ACRE-FT
Streamflow 92.5 cfs
+62.8 cfs (+211.45%)
Percent of Normal 20.66%
Maximum 85,700.0 cfs
Seasonal Avg 448 cfs
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Little Missouri River At Marmarth
USGS 06335500
37 cfs 1.12 ft 188.28
Little Missouri River At Medora
USGS 06336000
56 cfs 1.52 ft 87.21
Little Missouri River Nr Watford City
USGS 06337000
32 cfs 7.01 ft 14.03
Little Missouri River Near Langley
USGS 07360200
15 cfs 3.3 ft -5.19

Regional Streamflow


Cubic Feet Per Second


Cubic Feet Per Second


Cubic Feet Per Second


Cubic Feet Per Second

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Historical River Levels

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.

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