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Citizen Science Opportunity!

Do you have a sinkhole on your property? Report it to the OGS!

Fill out a quick survey to let us know that you have a sinkhole on your property! We are working to create a map of subsidence for the state of Oklahoma. CLICK HERE for the survey!

Hazard Mapping Program

Earth surface processes and hazards, including landslides, land subsidence and soil erosion occur in Oklahoma. The Oklahoma Geological Survey monitors and maps these events across the state. Some of our recent projects focus primarily on causes, mechanics and susceptibility of shallow landslides in eastern Oklahoma, and land subsidence and sinkholes across the state. We are also characterizing the role of granite fractures in ecological, hydrological and geomorphic (i.e., erosion and mass movement) environments in the Wichita Mountains of southwest Oklahoma.

Our research tends to explore granular scale soil-water interaction based on physical modeling. We also conduct site, regional and global scale mapping, based on detailed geological and geomorphological mapping in the field, and by using remote sensing products including high resolution LiDAR topographic data and satellite imagery, geophysical techniques, and numerical, statistical and geospatial modeling approaches.

We produce maps of surface processes and hazards/risks and disseminate these data for public use. We heartily welcome research collaborations with universities, federal, state, and local agencies. Please contact Dr. Netra Regmi for more information.

Rockslide on highway US 295

A rockslide on highway US 295



Landslide near Highway 82

A landslide near Oklahoma State Highway 82.



Landslide susceptibility map

A preliminary landslide susceptibility map of Sugarloaf Mountain developed using 1 m LiDAR topographic data. Black polygons are historical landslides, red color represents highly susceptible slopes and blue color represents relatively stable slopes.



Fractures in granite

Fractures in granite of Wichita Wildlife Refuge in southwest Oklahoma. Our research is focusing on pattern and density of fractures, fracture control in drainage development, weathering and soil development, and fracture relationships with eco-hydrologic environments.