Title:
National Coordinated Common Resource Area (CRA)
Originator:
U.S. Department of Agriculture, National Soil Survey Center
Abstract:
A CRA map delineation is defined as a geographical area where resource concerns, problems, or treatment needs are similar. It is considered a subdivision of an existing Major Land Resource Area (MLRA) map delineation or polygon. Landscape conditions, soil, climate, human considerations, and other natural resource information are used to determine the geographic boundaries of a CRA (Title 450, Technology, General Manual, Part 401, Technical Guides, Section 401.21, Definitions).
Format: vector lines –
Shapefile
Spatial Reference Information: Decimal Degrees, North American
Datum 1983
The National Coordinated CRA Geographic Database, Version 1.1, provides:
1) A consistent CRA geographic database;
2) CRA geographic data compatible with other Geographic Information System (GIS)
data digitized from 1:250,000 scale maps, such as land use/land cover, political
boundaries, Digital General Soil Map of the U.S. (updated STATSGO), and
ecoregion boundaries;
3) A consistent (correlated) geographic index for Conservation Management Guide
Sheet information and the electronic Field Office Technical Guide (eFOTG): and
4) A geographic linkage with the national MLRA framework.
