Markert 5
Status not reported Unknown well
| API number | 12-009-20781 |
|---|---|
| Operator | Calhoun Research & Development |
| County | Brown, Illinois |
| Permitted | 1982-09-21 |
| Completed | 1983-01-28 |
| Depth | 700 ft |
| Surface location | 39.944469, -90.787502 · 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.