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National Resources Inventory

National Resources Inventory

The National Resources Inventory (NRI) is a statistically based sample of land use and natural resource conditions and trends on U.S. nonfederal lands. It is the most comprehensive database of its kind ever attempted anywhere in the world.  Data for the NRI are collected at more than 3,000 locations in Arizona by NRCS resources inventory specialists.

NRI background and results information can be obtained at the following links.