Dyroff, Mathilda 21
Status not reported Oil well
| API number | 12-163-01624 |
|---|---|
| Operator | Ohio Oil Co., The |
| County | St. Clair, Illinois |
| Completed | 1929-01-01 |
| Depth | 520 ft |
| Surface location | 38.511043, -90.210586 · wells within 1 mile |
| State record | Illinois State Geological Survey ↗ |
| Data as of | 2026-10-17 |
From Illinois State Geological Survey public records. Verify with the state before relying on this information.