Conservation tillage data interpolated from counties to watersheds. Original data from the Conservation Technology Information Center. Interpolated data from Baker (2011).
| OID | Internal feature number. |
| HUC8_N | Numeric 8-digit hydrologic unit code |
| crop | crop name |
| year | crop planting year |
| notill | No till conservation tillage, greater than 30 percent of soil covered with crop residue |
| ridge | Ridge till conservation tillage, greater than 30 percent of soil covered with crop residue |
| mulch | Mulch till conservation tillage, greater than 30 percent of soil covered with crop residue |
| reduced | Reduced tillage (not considered conservation tillage), 15-30 percent of crop residue left on soil |
| intense | Intensive or conventional tillage, less than 15 percent residue left on soil |
| totacre | Total planted acres (sum of all tillage types) |
| pctnotil | Percentage of no tilll acres |
| pctridge | Percentage of ridge tilll acres |
| pctmulch | Percentage of mulch till acres |
| pctreduc | Percentage of reduced tilll acres |
https://water.usgs.gov/GIS/metadata/usgswrd/XML/ds573_tillage_lu01.xml
Baker, N.T. 2011. Tillage practices in the conterminous United States, 1989–2004: Datasets aggregated by watershed. U.S. Geological Survey Data Series 573. USGS, Reston, VA