About this river
Big Black River is a 21.0 mile river near Main Harbor Store LLC in Mississippi. Streamflow is measured at the USGS gauge Big Black River near Bentonia, MS (site 07289730). The National Hydrography Dataset places it at stream order 7. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1996 to 2026
Big Black River typically runs highest in February, at a median 4,470 cfs, and lowest in October, at 249 cfs. The highest flow on record for any single day is 64,300 cfs, in 2020.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 3,080 | 1,100 to 7,410 | |
| February | 4,470 | 1,710 to 9,970 | |
| March | 4,460 | 2,170 to 9,600 | |
| April | 3,740 | 1,200 to 9,350 | |
| May | 1,100 | 636 to 3,450 | |
| June | 779 | 429 to 2,150 | |
| July | 552 | 314 to 1,150 | |
| August | 386 | 242 to 712 | |
| September | 298 | 178 to 659 | |
| October | 249 | 157 to 497 | |
| November | 342 | 201 to 901 | |
| December | 1,370 | 541 to 4,070 |
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 31 years of record. Statistics published by the US Geological Survey for Big Black River near Bentonia, MS (site 07289730). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
One mapped launch sits in the mapped area of Big Black River. Ramp data comes from the USGS national boat-ramp inventory.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Big Black 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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