Sub-locations
| Name | Sites | Samples |
|---|---|---|
| Henry County | 1 | 5 |
| Hickory County | 5 | 81 |
| Holt County | 1 | 1 |
| Howard County | 1 | 2 |
| Jackson County | 21 | 66 |
| Jefferson County | 0 | 0 |
| Knox County | 1 | 0 |
| Lafayette County | 2 | 3 |
| Lawrence County | 2 | 9 |
| Lewis County | 4 | 30 |
| Lincoln County | 3 | 12 |
| Macon County | 2 | 7 |
| Madison County | 1 | 2 |
| Maries County | 1 | 2 |
| Marion County | 2 | 4 |
| McDonald County | 4 | 19 |
| Miller County | 1 | 4 |
| Mississippi County | 14 | 61 |
| Monroe County | 14 | 50 |
| Montgomery County | 1 | 9 |
| New Madrid County | 9 | 48 |
| Newton County | 2 | 5 |
| Oregon County | 2 | 3 |
| Osage County | 1 | 5 |
| Pemiscot County | 3 | 16 |