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These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural conservation practice (CPIT03), Gravity and Pressure Irrigation Source (GPI) on agricultural land by county. Gravity and Pressure Irrigation Source are described as a "combination of Gravity and Pressure Irrigation." (U.S. Department of Agriculture, 1995) This data set was created with geographic information systems...
    map background search result map search result map Gravity and Pressure Irrigation on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice IT03 Gravity and Pressure Irrigation on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice IT03