About this river
Missouri River is a 31.8 mile river near Missouri River Outdoors in South Dakota. Streamflow is measured at the USGS gauge Missouri River at Sioux City, IA (site 06486000). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1953 to 2026
Missouri River typically runs highest in September, at a median 33,000 cfs, and lowest in January, at 16,100 cfs. The highest flow on record for any single day is 189,000 cfs, in 2011.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 16,100 | 13,200 to 20,700 | |
| February | 17,200 | 13,300 to 20,600 | |
| March | 18,900 | 14,300 to 27,800 | |
| April | 30,600 | 26,100 to 34,950 | |
| May | 31,500 | 27,700 to 36,300 | |
| June | 32,100 | 28,400 to 39,900 | |
| July | 32,600 | 29,100 to 38,900 | |
| August | 32,400 | 29,600 to 38,800 | |
| September | 33,000 | 29,900 to 39,400 | |
| October | 32,700 | 29,000 to 39,500 | |
| November | 31,350 | 17,350 to 40,100 | |
| December | 17,200 | 13,100 to 21,800 |
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 74 years of record. Statistics published by the US Geological Survey for Missouri River at Sioux City, IA (site 06486000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
4 mapped launches sit in the mapped area of Missouri River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Mulberry BendMissouri RiverPublic
- Brooky Bottom ParkPublic
- Clay County Land Use AreaPublic
- Myron Grove Public Water AccessPublic
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Missouri River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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