2004 UC Proceedings Abstract

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Flood Plain Modeling/Mapping at DuPage County, IL Requires GIS
Track: Water Resources
Author(s): John McLaughlin

Modern flood plain modeling and mapping is done at the County of DuPage, IL, using Esri software products. GIS methodology is applied to DuPage's hydrology/hydraulic/statistical/mapping approach which creates reproducible, defensible flood study models and digital map products. This paper presents an overview of the workflow process from raw data to flood maps. The analytical modeling approach was established in the early 1990s. What was needed was GIS to organize the spatial data progression and to establish routine map making capabilities. All work to date uses Workstation ArcInfo except for the map making, which relies upon Desktop ArcGIS. This approach has earned DuPage the Cooperating Technical Partner status with FEMA, which recognizes its Digital Flood Insurance Rate Map and its Regulatory Flood Map. This case study will help other governments consider other approachs for producing all digital flood plain maps.

John McLaughlin
County of DuPage, Illinois
Development & Environmental Concerns
421 N. County Farm Road
Wheaton , IL 60187
US
Phone: 630-682-7360
E-mail: John.McLaughlin@dupageco.org