About this river
Big Black River is a 48.6 mile river near Blue Cat Guide Service in Mississippi. Streamflow is measured at the USGS gauge Big Black River near Bovina, MS (site 07290000). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1936 to 2026
Big Black River typically runs highest in March, at a median 6,270 cfs, and lowest in October, at 259 cfs. The highest flow on record for any single day is 90,600 cfs, in 1983.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 3,930 | 1,390 to 9,310 | |
| February | 5,900 | 2,350 to 11,200 | |
| March | 6,270 | 3,030 to 11,900 | |
| April | 4,710 | 1,670 to 10,700 | |
| May | 1,800 | 742 to 6,360 | |
| June | 817 | 432 to 2,085 | |
| July | 621 | 342 to 1,430 | |
| August | 483 | 295 to 899 | |
| September | 311 | 212 to 666 | |
| October | 259 | 158 to 522 | |
| November | 401 | 216 to 1,105 | |
| December | 1,710 | 519 to 4,950 |
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 90 years of record. Statistics published by the US Geological Survey for Big Black River near Bovina, MS (site 07290000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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