MSD Chicago-Mainstream Sys DH71-34(81
Status not reported Other well
| API number | 12-031-33621 |
|---|---|
| Operator | Harza Engineering Co. |
| County | Cook, Illinois |
| Completed | 1971-09-24 |
| Depth | 826 ft |
| Surface location | 41.802377, -87.802805 · 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.