Big River in Missouri
Around here
Around Big River
Public land: USGS PAD-US
About this river
Big River is a 62.1 mile river. Streamflow is measured at the USGS gauge Big River near Richwoods, MO (site 07018100). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1949 to 2026
Big River typically runs highest in April, at a median 713 cfs, and lowest in September, at 137 cfs. The highest flow on record for any single day is 53,600 cfs, in 2017.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 380 | 208 to 727 |
| February | 484 | 286 to 789 |
| March | 711 | 402 to 1,300 |
| April | 713 | 446 to 1,315 |
| May | 568 | 347 to 1,040 |
| June | 285 | 192 to 526 |
| July | 177 | 127 to 301 |
| August | 151 | 105 to 234 |
| September | 137 | 97 to 215 |
| October | 140 | 111 to 205 |
| November | 213 | 135 to 416 |
| December | 314 | 184 to 661 |
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 76 years of record. Statistics published by the US Geological Survey for Big River near Richwoods, MO (site 07018100). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
8 mapped launches sit in the mapped area of Big River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Bismarck Conservation AreaCarl DiSalvo LakePublic
- Washington State Park AccessBig RiverPublic
- Mammoth AccessBig RiverPublic
- Merrill Horse AccessBig RiverPublic
- Brown's Ford AccessBig RiverPublic
- River Round Conservation AreaMeramec RiverPublic
- Chouteau Claim AccessBourbeuse RiverPublic
- Dr. Henry A. and Amalia Uhlemeyer AccessBourbeuse RiverPublic
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Big River's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
