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Welcome to the Wyoming State Geological Survey

Interpreting the past, providing for the future


Influences on Production in PRB

Report of Investigations 77 evaluates horizontal drilling and completion practices of oil and natural gas wells in the Powder River Basin.

Great Divide and Washakie Basin Coal

A report about coal in the Fort Union Formation of south-central Wyoming has been published.

Critical Minerals

A Critical Minerals web page and a 2019 Summary Report have been released by the WSGS.
ACC bentonite Mill

Energy & Hazards Summary Reports

2019 Summary Reports are available for Oil, Natural Gas, & Coal as well as Geologic Hazards.


Interactive Maps



Link to interactive Groundwater Atlas Link to interactive Oil and Gas map Link to interactive Geochronology map Link to Interactive Geologic Map index Link to Interactive Mines & Minerals Map Link to Interactive Hazards Map





   
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