The Pennsylvania Geological Survey's PaGEODE online tool provides an interactive map of the geology and natural resources of Pennsylvania, including:

• Surface and bedrock geology
• Earthquakes
• Karst features
• Coal, oil, and gas resources
• Sites of notable geologic interest
• Street and topographic maps, and aerial images

The map allows users to select multiple layers that can be overlain on each other. By doing this, users can see how different features are related.

The Oregon Department of Geology and Mineral Industries statewide geohazard viewer, HazVu, provides a way to view a range of geohazards in the state of Oregon,including:

• Earthquakes - active faults, historical epicenters, expected shaking, and liquefaction hazards
• Tsunami inundation hazard
• Volcanoes
• Landslides - historical landslides and landslide susceptibility
• Floods
• Coastal erosion

The map also includes public buildings so that hazards can be assessed for these locations.

The Ohio Department of Natural Resources, Division of Oil & Gas Resources provides an interactive map of the location, status, and type of oil and gas wells across the state of Ohio. The map also includes information on oil and gas fields, groundwater protection, and flood risk (100-year floodplain).

Oil and gas well data can be downloaded by county for further use and analysis.

Click here to access the interactive map of Ohio's oil and gas wells.

The Ohio Department of Natural Resources' Mines of Ohio map is a joint product of the Division of Mineral Resources and the Division of Geological Survey. The interactive map provides the locations and types of active mining operations for coal and industrial minerals across the state of Ohio. Also shown are surface affected areas, their reclamation status, and abandoned underground mines.

Click here to access the Mines of Ohio interactive map.

The Ohio Department of Natural Resources Division of Geological Survey provides an interactive map of earthquake epicenters and magnitudes for past earthquakes in Ohio. For each earthquake, users can click on the symbol to find out specific information and access a full earthquake report. The map also uses star icons to indicate the location of seismic stations throughout Ohio. By clicking on the star icon, users can learn more about where the seismic station is housed and who the designated contact is for each station. 

The New Jersey Department of Environmental Protection's GeoWeb Map Viewer provides a large amount of information on New Jersey's geology, natural resources, and environmental management in interactive map form, including:

The Nevada Bureau of Mines and Geology's Great Basin Geothermal Energy web app provides a large amount of information on geothermal energy in Nevada. The map includes:

The Minnesota Geological Survey's interactive map provides bedrock geology and fault information for the state of Minnesota.

Click here to access the Minnesota Geological Survey's interactive map

Source: Minnesota Geological Survey

The Kentucky Geological Survey's interactive map provides a large amount of information on Kentucky's geology and natural resources in interactive map form, including:

The Maryland Geological Survey, in cooperation with the U.S. Geological Survey, maintains a state-wide network of groundwater observation wells. The data from these wells is used to create an interactive map of groundwater levels in Maryland. The map provides both historical and recent groundwater reading levels across a range of aquifers in the state of Maryland. 

Click here to use the interactive map.

Source: Maryland Geological Survey