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Data Sources E-1 Appendix E Data Sources The list that follows provides some resources for data that may be used to support many of the performance measures included in the compendium. Much of the data will have to come directly from state or regional agencies, but these represent data sources that may be relevant for a large number of agencies. Environmental Data Sources National Air Toxics Assessments Ongoing comprehensive evaluation of air toxics in the United States maintained by EPA. National Water Quality Standards Database A compilation of designated uses, used by each state to describe the functions each water body is intended to support. National Wetlands Inventory A series of topical maps to show wetlands and deepwater habitats. Nature Conservancy's Spatial Data Resources Publicly available conservation data for GIS and non-GIS users. State Wildlife Action Plans A summary of these plans as well as links to contacts and more information. The USGS National Hydrology Dataset A comprehensive digital spatial dataset that contains information about surface-water features such as lakes, ponds, streams, rivers, springs, and wells. Watershed Data Available on EPA's national watershed webpage at Transportation Data Sources Census Transportation Planning Package A subset from the decennial census demographic surveys designed for transportation planners. FHWA Freight Management and Operations A resource of major sources of national freight transportation data.

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E-2 A Guidebook for Sustainability Performance Measurement for Transportation Agencies National Highway Traffic Administration Fatality Analysis Reporting System Data on all vehicle crashes in the United States that occur on a public roadway and involve a fatality. Texas Transportation Institute Urban Mobility Report Annual report of congestion on freeways and major streets in 101 cities in the United States. Other Data Sources U.S. Census Data Decennial demographic data, American Household Survey, and National Household Travel Survey. U.S. Department of Homeland Security Annual Performance Report Provides information about the effectiveness of the DHS's mission performance and stewardship of resources.