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Little Muddy River in North Dakota

River62.1 mi

Around here

Around Little Muddy River

Williston FoxRun RV Park19.8 miLake Zahl National Wildlife Refuge4.8 mi5 mi

Data Source: Recreation.gov · Public land: USGS PAD-US

About this river

Little Muddy River is a 62.1 mile river. Streamflow is measured at the USGS gauge Little Muddy River below Cow Creek near Williston, ND (site 06331000). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1954 to 2026

Little Muddy River typically runs highest in April, at a median 32 cfs, and lowest in August, at 6.1 cfs. The highest flow on record for any single day is 6,610 cfs, in 1979.

Show the numbers
Typical flow by month at Little Muddy River below Cow Creek near Williston, ND, in cfs
MonthTypical (cfs)Usual range (cfs)
January7.05.1 to 10
February7.05.0 to 12
March1910 to 131
April3219 to 58
May1812 to 32
June149.6 to 23
July9.55.8 to 16
August6.14.5 to 8.4
September6.34.8 to 8.9
October9.27.2 to 12
November119.0 to 14
December9.37.1 to 11

Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 71 years of record. Statistics published by the US Geological Survey for Little Muddy River below Cow Creek near Williston, ND (site 06331000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

Boat access nearby

3 mapped launches sit in the mapped area of Little Muddy River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.

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