The NRI is a statistical survey based on well-established scientific principles created to provide support for Agricultural & Environmental policy development program implementation. It was designed and implemented to assess conditions and trends of soil, water, and related resources on non-Federal rural lands. Non-Federal lands include privately owned lands, tribal and trust lands, and lands controlled by State and local governments. The survey is conducted for the USDA by the NRCS in cooperation with CSSM. The NRI captures data on land cover and use, soils, soil erosion, wetlands, habitat diversity, selected conservation practices, and related resource attributes at scientifically selected sample sites. NRI reports provide updated information on the status, condition, and trends of land, soil, water, and related resources.