Geospatial data and Geographic Information Systems (GIS) are critical infrastructure in the United States, vital for governance, economic activity, environmental management, and national security. Effective national-level coordination is essential to manage this complex ecosystem. The Federal Geographic Data Committee (FGDC) guides the National Spatial Data Infrastructure (NSDI), a nationwide framework of policies, standards, and partnerships for geospatial data. Key federal agencies, including the U.S. Geological Survey (USGS), National Oceanic and Atmospheric Administration (NOAA), and the Department of Homeland Security (DHS), serve as primary stewards of foundational national geospatial data. The National Geospatial Advisory Committee (NGAC) provides crucial non-federal perspectives to guide these federal efforts. This entry outlines the primary federal bodies, programs, and communities of practice that constitute the U.S. national geospatial enterprise, their interconnections, and the persistent challenges they face.
Spatial data infrastructures may be thought of as socio-technical frameworks for coordinating the development, management, sharing and use of geospatial data across multiple organizational jurisdictions and varying geographic extents. The United States was an early adopter of the SDI concept and the U.S. National Spatial Data Infrastructure (NSDI) is an example of a country-wide SDI implementation facilitated by coordination at the federal-government level. At the time of its establishment in the early 1990s, a unique characteristic of the NSDI was a mandate for federal agencies to establish partnerships with state- and local-level government. This entry summarizes the origins of the NSDI’s establishment, its original core components and how they’ve evolved over the last 25 years, the role of the Federal Geographic Data Committee (FGDC), and the anticipated impact of passage of the Geospatial Data Act of 2018. For broader technical information about SDIs, readers are referred to GIST BoK Entry DM-60: Spatial Data Infrastructures (Hu and Li 2017). For additional details on the history of the NSDI, readers are referred to Rhind (1999). For the latest information on recent and emerging NSDI initiatives, please visit the FGDC web site (www.fgdc.gov).