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Dennis 1
Status not reported Oil well
| API number | 12-189-00869 |
|---|---|
| Operator | Gill Oil Co |
| County | Washington, Illinois |
| Completed | 1958-09-01 |
| Depth | 1,270 ft |
| Surface location | 38.268451, -89.397232 · 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.