Natural Resources
- Air - AirData : Access to Air Pollution Data - This site contains information and data on air pollution across the United States. The data is collected by thousands of monitoring stations operated by EPA, national, state, and local agencies.
- Land Use - State-level 2002 inventory of U.S. major land uses, drawing on data from the Census, public land management and conservation agencies, and other sources.
- Land use: State, regional, and national estimates of 15 major land uses including cropland, pasture, grazing, forest, and urban uses for Census of Agriculture years between 1945-2006. Searchable by commodity or geography.
- Land use: The National Resources Inventory (NRI) is a statistically based sample of land use and natural resource conditions and trends on U.S. nonfederal lands. Years include 1982, 1987, 1992, 1997, 2001-2003. Colorado data are available in summary report.
- Land use, geopspatial data: USDA Geospatial Data Gateway allows users to select a state, region, county or smaller area and download GIS data.
- National Forest, National Grasslands: Link to USFS reports, including land area reports and research publications.
- Natural Diversity Information Source: Colorado Division of Wildlife provides mapping, data, information, and links to similar websites concerning hunting, fishing, wildlife, habitat, and conservation planning issues in Colorado.
- Water: Colorado Water Resources Research Institute information and links to Colorado water issues and data (including drought).
- Water information: Data, reports, statutes and other information pertaining to water supply protection, watershed protection & flood mitigation, stream & lake protection, water supply planning & finance, water conservation & drought planning, and intrastate water management & development in Colorado.
- Water, watersheds: Locates watersheds by a variety of levels (ie state, county, river, watershed name) and then provides an environmental profile of the watershed with charts and graphs.
