WellheadMap

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Union Unit 1

Plugged Dry hole well

API number04-113-20566
OperatorTri-Valley Oil & Gas Co.
CountyYolo, California
Spudded1979-09-28
Surface location38.611065, -121.736862 · wells within 1 mile
Directions to the wellhead: Google Maps Apple Maps Waze
State recordCalifornia Geologic Energy Management Division (CalGEM) ↗
Data as of2026-10-19

From California Geologic Energy Management Division (CalGEM) public records. Verify with the state before relying on this information.