and analysis of data, preparing GIS base maps and in the field verification and data collection. U.S. Army Engineer Research and Development Center (USAERDC) JAYA Corporation's field... to assimilate large volumes of hydrologic data. GIS offers the best means of improving productivity, reducing costs, and ultimately gaining insight to the nature of the problems. GIS based... from many sources such as conventional databases, digitized or electron maps/CAD files, remotely sensed or acquired imagery data such as those from aerial or satellite platforms...