WellheadMap

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Markert S- 1

Permitted Unknown well

API number12-009-21077
OperatorCalhoun Research & Development
CountyBrown, Illinois
Permitted1983-02-09
Surface location39.946417, -90.797618 · wells within 1 mile
Directions to the wellhead: Google Maps Apple Maps Waze
State recordIllinois State Geological Survey ↗
Data as of2026-10-17

From Illinois State Geological Survey public records. Verify with the state before relying on this information.