Data are not available for Alaska or the Pacific Basin. Data for Puerto Rico and the U.S. Virgin Islands is shown by 6-digit hydrologic unit. NRI maps reflect national patterns rather than site- specific information. When viewed vertically, canopy cover is 25 percent or greater. For classification as forest land, an area must be at least one acre and 100 feet wide.
Land cover is the vegetation or other kind of material that covers the land surface.
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. For additional information contact the Resource Assessment Division. Please include the Product ID you are inquiring about. If you use our analysis products, please be aware of our disclaimer .