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Real-time flood forecasting and information system for the state of Iowa
Journal article   Open access   Peer reviewed

Real-time flood forecasting and information system for the state of Iowa

Witold F Krajewski, Daniel Ceynar, Ibrahim Demir, Radoslaw Goska, Anton Kruger, Carmen Langel, Ricardo Mantilllla, James Niemeier, Felipe Quintero, Bong Chul Seo, …
Bulletin of the American Meteorological Society, Vol.98(3), pp.539-554
2017
DOI: 10.1175/BAMS-D-15-00243.1
url
https://doi.org/10.1175/BAMS-D-15-00243.1View
Published (Version of record) Open Access

Abstract

AbstractThe Iowa Flood Center (IFC), established following the 2008 record floods, has developed a real-time flood forecasting and information dissemination system for use by all Iowans. The system complements the operational forecasting issued by the National Weather Service, is based on sound scientific principles of flood genesis and spatial organization, and includes many technological advances. At its core is a continuous rainfall–runoff model based on landscape decomposition into hillslopes and channel links. Rainfall conversion to runoff is modeled through soil moisture accounting at hillslopes. Channel routing is based on a nonlinear representation of water velocity that considers the discharge amount as well as the upstream drainage area. Mathematically, the model represents a large system of ordinary differential equations organized to follow river network topology. The IFC also developed an efficient numerical solver suitable for high-performance computing architecture. The solver allows the IF...

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