The Wyoming State Geological Survey makes a large amount of information on oil and gas in the state available in interactive map form. The map includes:

The U.S. Energy Information Administration provides an interactive map showing the major tight oil and shale gas plays in the lower 48 states.

Tight oil and shale gas are two of the main types of "unconventional" oil and gas resources, and played an important role in the early-21st-century resurgence in domestic production of oil (beginning around 2009) and natural gas (beginning around 2006).

The Kansas Geological Survey's High Plains Aquifer Interactive Atlas provides a large amount of information on the High Plains Aquifer underneath western and central Kansas, which provides 70-80% of the water used in Kansas. Features of this interactive map include:

The National Oceanic and Atmospheric Administration's nowCOAST web app provides real-time observations, forecasts, and warnings for a wide range of coastal and inland weather, water, air, and hazard issues. Available layers and services include:

The Pennsylvania Department of Environmental Protection's Office of Active and Abandoned Mine Operations has collaborated with Pennsylvania State University to produce the Pennsylvania Mine Map Atlas. This enormous resource contains thousands of detailed coal mine maps that can be overlaid on a variety of base maps for the entire state, including terrain, topographic and road maps, and aerial photographs.

The North Carolina Geological Survey has produced an interactive online version of its geologic map of North Carolina. Users can click on the individual units for more information, and a PDF of the map is available for download.

In addition to the state geologic map, users can also view information and maps of North Carolina's physiographic provinces and major geologic features.

The North Dakota Department of Environmental Quality provides information about surface water quality across the state in interactive map form. The map includes:

• Detailed water quality data for lakes, rivers, and reservoirs
• Water quality impairment status for lakes, reservoirs, rivers, and streams
• Detailed hydrology for the state, including all surface water bodies and surficial aquifers

Additional map layers include information on administrative boundaries and the state's air, rail, and road transportation networks.

The Maryland Department of Natural Resources' Coastal Atlas provides a large amount of information on coastal issues in Maryland. The interactive map includes:

The Idaho Bureau of Laboratories has produced an interactive map of groundwater quality for nine major contaminants across the state. Map layers are available for arsenic, chloride, copper, fluoride, iron, manganese, selenium, sulfate, and total nitrate.

Contaminant concentrations are provided for a variety of well depths, and maximum level guidelines from the EPA are provided, along with potential health effects from long-term exposure above these levels. Additional resources are also provided for further information on each contaminant.