Contour Farming on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice 330
This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the 
agricultural conservation practice (CP330), Contour Farming (CF) on agricultural land by county.  Contour 
Farming is described as "tillage, planting, and other farming operations performed on or near the …