topic Modified DRASTIC Groundwater Susceptability using ArcGis in Water Resources Questions https://community.esri.com/t5/water-resources-questions/modified-drastic-groundwater-susceptability-using/m-p/639809#M3348 <HTML><HEAD></HEAD><BODY><SPAN>I am beginning a project where I need to create a series of rankings in a 30 x 30 meter grid size, add values together and produce an final total ranking value for the grids. The data used will be soils, percent slope, depth-to-groundwater, precipitation, ect..... What is the best and most efficient approach to this? Any lessons learned out there?</SPAN></BODY></HTML> Wed, 10 Oct 2012 00:55:15 GMT DanBlythe 2012-10-10T00:55:15Z Modified DRASTIC Groundwater Susceptability using ArcGis https://community.esri.com/t5/water-resources-questions/modified-drastic-groundwater-susceptability-using/m-p/639809#M3348 <HTML><HEAD></HEAD><BODY><SPAN>I am beginning a project where I need to create a series of rankings in a 30 x 30 meter grid size, add values together and produce an final total ranking value for the grids. The data used will be soils, percent slope, depth-to-groundwater, precipitation, ect..... What is the best and most efficient approach to this? Any lessons learned out there?</SPAN></BODY></HTML> Wed, 10 Oct 2012 00:55:15 GMT https://community.esri.com/t5/water-resources-questions/modified-drastic-groundwater-susceptability-using/m-p/639809#M3348 DanBlythe 2012-10-10T00:55:15Z