| Soil Name | Subgroup | Control Section | A Horizon SOM (%) |
| Alligator | Chromic Dystraquerts | very-fine | 1 - 3 |
| Beaucoup | Fluvaquentic Endoaquolls | fine-silty | 5 - 6 |
| Bowdre | Fluvaquentic Hapludolls | clayey over loamy | 1 - 3 |
| Commerce | Fluvaquentic Endoaquepts | fine-silty | 0.5 - 2 |
| Caruthersville | Typic Udifluvents | coarse-silty | 1 - 2 |
| Darwin | Vertic Endoaquolls | fine | 4 - 5 |
| Dupo | Aquic Udifluvents | coarse silty over clay | 1 - 2 |
| Elsah | Typic Udifluvents | loamy-skeletal | 1 - 3 |
| Falaya | Aeric Fluvaquents | coarse-silty | 0.5 - 3 |
| Haynie | Mollic Udifluvents | coarse-silty | 1 - 3 |
| Jackport | Chromic Epiaquerts | fine | 1 - 3 |
| Haymond | Fluventic Eutrudepts | coarse-silty | 1 - 3 |
| Leta | Fluvaquentic Hapludolls | clayey over loamy | 2 - 4 |
| Mhoon | Fluvaquentic Endoaquepts | fine-silty | 0.5 - 2 |
| Nameoki | Aquertic Hapludolls | fine | 2 - 4 |
| Parkville | Fluvaquentic Hapludolls | clayey over loamy | 1 - 3 |
| Sharkey | Chromic Epiaquerts | very-fine | 0.5 - 2 |
| Steele | Aquic Udifluvents | sandy over clayey | 0.5 - 1 |
| Wakeland | Aeric Fluvaquents | coarse-silty | 1 - 3 |
| Walbash | Vertic Endoaquolls | fine | 2 - 4 |
| Waldron | Aeric Fluvaquents | fine | 2 - 4 |
| Wilbur | Fluvaquentic Eutrudepts | coarse-silty | 1 - 3 |