The shaded polygon map shows the percentage of land owned by the Federal government. The 95% or more category is determined by a combination of actual boundaries of Federal land from USGS and data from the 1997 National Resources Inventory (NRI). The 50% to 95%, 5% to 50%, and less than 5% are based on 1997 NRI data aggregated by 8-digit hydrologic unit. 402,138,100 acres or 21% of the total land area is Federally owned (excluding Alaska).
Cautions for this Product:
This map may not be used to determine site- specific information. No NRI data are available for Alaska.
Source: National Resources Inventory, 1997
NRI sample data are generally reliable at the 95% confidence interval for state and certain broad substate area analyses. Generally, analyses that aggregate data points by smaller geographic areas and/or more specific criteria result in fewer data points for each aggregation and therefore less reliable estimates. NRI maps reflect national patterns rather than site- specific information.
Source: National Atlas
Aggregate Layer: 8 Digit Hydrologic Unit Areas
Other Layers Displayed: States, Federal Land
A land ownership class designating land that is owned by the Federal Government. It does not include, for example, trust lands administered by the Bureau of Indian Affairs nor Tennessee Valley Authority (TVA) land. No data are collected for any year that land is in this ownership. [NRI-97]
Includes all land and water areas where the ownership is by private, municipal, county or parish, state, Indian tribal, individual trust, the Tennessee Valley Authority, or areas under temporary control of a Federal, state, county or municipal agency or government for foreclosure or nonpayment of taxes.
The separation of Federal and nonfederal lands and the distinction between administrative units of land; water areas are not classified according to ownership. There are seven categories: County or parish, Federal, Indian tribal and individual trust lands, Private, Municipal, State, Water-unspecified
Product ID: 5554
Production Date: 1/25/01
Product Type: Map
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