Nitrogen Source Inventory Loading Tool (NSILT)
DEP developed this tool to identify and quantify the major contributing nitrogen sources to groundwater in areas of interest. This GIS and spreadsheet-based tool provides spatial estimates of the relative contribution of nitrogen from various sources, and takes into consideration the transport pathways and processes affecting the various forms of nitrogen as they move from the land surface through soil and geologic strata that overlie and comprise the Upper Florida aquifer.