Web-based Floodplain Advisory Tool (WFAT) Using High Resolution DEM

Goal

The goal of this project is to develop a web-based decision support or advisory tool that allows developers, planners and other local government decision makers to utilize a high resolution Digital Elevation Model (DEM) and floodplain related Geographical Information System (GIS) data layers in making floodplain management decisions data for a small subdivision in St. Charles County, Missouri, which is one of the fastest growing counties in the Midwest.

The study area in St. Charles County, Missouri.

Design and Development

Design and development for the WFAT includes data development such as high-resolution DEM generation and designing the Web architecture. A high-resolution DEM was generated using digitally scanned National Aerial Photograph Program (NAPP) aerial photos in conjunction with highly accurate ground control from a rapid-static GPS survey. Design and development of the Web-technology utilized ArcView GIS and Internet Map Server, Java, JavaScript, HTML and Avenue programming.

Partners

• St. Charles County Planning Department
• Electrical Engineering Department: University of Missouri-Columbia
• ICREST

Disclaimer

The maps shown on this web site should be considered as an education or advisory tool for floodplain management issues. The floodplain advisory tool displayed on this site is not a legal document. For more information on these maps and tools, please contact Ramanathan Sugumaran, University of Northern Iowa