The Coastal Assessment Framework (CAF) is a digital spatial framework developed using geographic information system technology, which allows resource managers and analysts to organize and present information on the nation's coastal and marine resources. The CAF provides a consistently derived, watershed-based digital spatial framework for managers and analysts to organize and present information on the nation's coastal, near-ocean, and Great Lakes' resources. Within NOAA, it is the cornerstone of a series of ongoing efforts to develop a national estuarine assessment capability. The Framework is composed of 150 Estuarine (and sub-estuarine) Drainage Areas (EDAs), 54 Fluvial Drainage Areas (FDAs), 324 Coastal Drainage Areas (CDAs), 12 Fluvial components of Coastal Drainage Areas (FCDAs), 11 interior watershed areas (self-contained, groundwater-contributing only, or watersheds draining to outside the U.S.).
This digital geography contains the complete Coastal Assessment Framework (Coastal, Upstream, Interior, and portions of U.S. Watersheds located outside the U.S.), including both land and water components at the hydrologic cataloging unit level. It is the CAF in its more elemental form.