From a NEXRAD Rainfall Map to a Flood Inundation Map
Publication: Journal of Hydrologic Engineering
Volume 11, Issue 1
Abstract
An application integrating the Hydrologic Engineering Center's (HEC)-Hydrologic Modeling System hydrologic simulation model and the HEC-River Analysis System hydraulic simulation model into a seamless floodplain mapping application is presented. The application is implemented with an ArcGIS 9 workflow model called Map to Map, which converts a map of rainfall data to a flood inundation map. The simulation models are integrated into the application by establishing information exchange points at which time series of information are passed to a model or returned from a model. Communication between simulation models and the Geographic Information System (GIS) is made possible by interface data models, which provide a one-to-one mapping between data structures within the simulation model and the GIS. A case study is presented for Rosillo Creek in Texas, in which the Map-to-Map model computes flood inundation polygons from rainfall data. Map to Map gives the user a powerful floodplain mapping and real-time flood forecasting tool.
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Acknowledgments
This research was financially supported by the GIS in Water Resources Consortium, the Texas Commission on Environmental Quality, the San Antonio River Authority, Bexar County, the City of San Antonio, and PBS&J Austin. We appreciate the efforts of ESRI’s Water Resources team in providing technical assistance.
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Information & Authors
Information
Published In
Journal of Hydrologic Engineering
Volume 11 • Issue 1 • January 2006
Pages: 37 - 45
Copyright
© 2006 ASCE.
History
Received: Dec 22, 2004
Accepted: Apr 5, 2005
Published online: Jan 1, 2006
Published in print: Jan 2006
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