Click on the image to access online geologic, hydrologic and geotechnical data.

For more than a century, the department's Missouri Geological Survey has produced geologic maps and collected related data. The department’s Geosciences Technical Resource Assessment Tool (GeoSTRAT) provides this information in an online, electronic format. This web application makes geologic and geotechnical data readily available on mobile devices and computers, with no plug-in's needed. An internet connection and web browser are all that is required.

Note: Individual layer data files (e.g., Shapefile, kml) may be downloaded from the department's GIS Open Data page.

Geologic and Geotechnical Information 

GeoSTRAT is an interactive ArcGIS map, which allows users to easily visualize and explore geospatial data. Citizens, city planners, industry representatives, academia and others can use this information for data assessments, such as hazards assessment, environmental consulting and engineering, local and regional planning and insurance assessment. Data can be downloaded in formats compatible with a variety of free and commercial mapping software. 

Oil and Gas Well Information

GeoSTRAT also contains the Stratigraphic and Geophysical Logs database. A well log is a detailed, depth-by-depth record of the types of rock, soil, and fluids (water, oil or gas) found underground when drilling a well. It acts like an underground map showing what is beneath the Earth's surface. Visit Well Logs, Rock Cuttings and Cores for more information.

Approximately 4,100 individual logs are included, containing stratigraphic and geophysical downhole information relating to oil and gas wells in Missouri. Users can either select “Well Logs” from the list of layers on the left side of the interface and zoom in until they are displayed, or search for an address. These logs represents a complete history of underground rock and physical well data collected and archived by the department's Missouri Geological Survey. 

Although the majority of information was acquired from boreholes associated with the oil and gas industry, boreholes related to other sources are included. The oldest information in the database dates back to 1939.