Abstract
A relatively simple ground-water Decision-Support System was developed to assist in identifying saltwater-vulnerable areas and in developing management policies to prevent saltwater intrusion in central Kansas. The Decision-Support System is based on a combination of numerical modeling sensitivity analyses, multiple regression analyses, and classification procedures derived from our knowledge of the area. Six ground-water salinity models are proposed to evaluate irrigation-well permit applications. The choice of model depends on the availability of site-specific data. The Decision-Support System takes advantage of GIS database-management procedures. The Decision-Support System is applied to an actual saltwater-intrusion problem site in south-central Kansas. This Decision-Support System approach can help local ground-water management districts make better decisions on protecting ground-water use in saltwater-vulnerable areas.