Earth Explorer is a product of the US Geological Survey containing downloads of DOQQ'S (digital aerial photography), the National Elevation Dataset, Digital Line Graph data, as well as other Satellite imagery for the lower 48 states. These are free digital products. Just log in as Guest for access.
This portal provides access to the EPA's Superfund program. Information on searching for Superfund sites in your area, as well as brownfield information is provided. Laws related to Superfund are also referenced.
The Earth Science Data Interface (ESDI) is a product of the Global Land Cover Facility of the US Geological Survey and NASA. It can be used to search for and download Landsat, MODIS or AVHRR derived products depending on the search. Search by map to browse and query, by path for Landsat, and product for MODIS or AVHRR. Downloads from all Landsat's can be found at: http://www.landcover.org/data/landsat/.
The U.S. Geological Survey consolidates information from local, state and federal agencies to seamlessly integrate many layers of georeferenced data into this national map. Find and print the map, or download the data associated with the area you have found.
Air monitoring data from Ohio EPA. Contains Current Air Quality Map, air Quality and Your Health, Air Quality Reports, Air Quality Index Reports (Ozone only)- April through October, Air Quality Index Forecasts (U.S. EPA), Air Pollution Advisory Programs in Ohio, Pollen and Mold Summaries for Ohio Cities, Air Monitoring Sites in Ohio.