The Tennessee Department of Environment and Conservation provides an interactive map service through which users can find information on water quality assessments across the state. Information on monitoring sites, permitting, dams, siltation, streams and waterbodies, and habitat impairment, are all available through the map. Users can click through to find more information on specific locations.

Click here to access the TN DEC interactive map.

The Vermont Center for Geographic Information's VT Interactive Map Viewer provides a large amount of information on Vermont's geology and natural resources, including:

The Montana Bureau of Mines and Geology provides an online interactive map of earthquake information for Montana, much of Idaho and Wyoming, and nearby areas of Washington, Oregon, North Dakota, South Dakota, Alberta, and British Columbia.

The map provides the locations, dates, and magnitudes of historical earthquakes. For Montana only, additional map data include recently active faults, seismic hazard zones, and a generalized geologic map.

Click here to access the MBMG interactive earthquake map.

The Massachusetts Office of Geographic Information's "OLIVER" Online Mapping Tool provides a huge amount of information on Massachusetts' geology, natural resources, and hazards in interactive map form, including:

The South Dakota Geological Survey's Oil and Gas Resources map provides a large amount of information on South Dakota's geology and natural resources, including:

• Surface and bedrock geology
• Earthquakes
• Water quality
• Oil and gas fields and wells

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. More detailed data for specific locations can also be accessed through the map.

The New Mexico Bureau of Geology and Mineral Resources' interactive map of New Mexico provides a large amount of information on the state's geology and natural resources, including:

The Oregon Department of Geology and Mineral Industries' Geothermal Information Layer for Oregon is an interactive map that allows users to locate geothermal wells and springs in Oregon, as well as direct use areas.

Temperature information is provided for many of the geothermal springs, and all of the data can be downloaded for further use and analysis.

Click here to access the Oregon DOGAMI Geothermal Information Layer.

The North Dakota State Government's North Dakota Hub Explorer provides a large amount of information on North Dakota's geology and natural resources in interactive map form, including:

The Wisconsin Geological & Natural History Survey makes their bedrock geology map of Wisconsin freely available to download on their website.

The map contains descriptions of the rock units, and provides sources for more detailed information.

Click here to access the WGNHS map.

Source: Wisconsin Geological & Natural History Survey

The New York State Department of Environmental Conservation's Mineral Resources Navigator provides an interactive map of mines, oil and gas wells, and other regulated wells in New York State.

The map is updated nightly, and can be used to find locations and permitting and operating dates for thousands of mines and wells across the state.

Click here to access the NYSDEC Mineral Resources Navigator.