This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural conservation practice (CPIT01), Gravity Irrigation Source (GI) on agricultural land by county (nri_it01)
This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject 
to the agricultural conservation practice (CPIT01), Gravity Irrigation Source (GI) on agricultural land 
by county.  Gravity Irrigation Source is described as irrigation "delivered to the farm and/or field by 
canals …