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Integration of SWMM into a Dam Break, Hurricane, and Extreme Flood Modeling and Damage Assessment Framework

David Judi, Alfred J. Kalyanapu, Timothy McPherson and Steven Burian (2009)
Los Alamos National Laboratory; University of Utah
https://doi.org/10.14796/JWMM.R235-13
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Abstract

SWMM5 has been seamlessly integrated with a Geographic Information System (GIS) for simulation of inundation and analysis of consequences resulting from extreme flood events. The GIS-based environment processes digital elevation models, land use/cover data, stream networks and soils to create stream network, sub-basins, and cross-section shapefiles for river basins selected for analysis. The following readily-available public-domain datasets are utilized: 30-m topographical data from the United States Geological Survey (USGS), Natural Resources Conservation Service (NRCS) (STATSGO), and National Hydrography Dataset (NHD).

Rainfall predictions are made by a numerical weather model and ingested in gridded format into the simulation environment. Runoff hydrographs are estimated using Green-Ampt infiltration excess runoff prediction and a one dimensional diffusive wave overland flow routing approach. The hydrographs and the channel morphology are used to generate a SWMM5 compatible input file. The input file is seamlessly passed to SWMM5 using a Dynamic Link Library (DLL) to model the flood wave propagation using the dynamic wave model. The resulting hydraulic grade lines are subsequently passed back into the GIS framework for transformation into inundation maps to be used in damage assessment. This model has been applied to modeling of dam breaks, hurricanes, and extreme flooding events in the United States. Results from dam break simulations are presented in this chapter along with a discussion on the performance of SWMM5 for this application.

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PAPER INFO

Identification

CHI ref #: R235-13 797
Volume: 17
Cite as: CHI JWMM 2009;R235-13
https://doi.org/10.14796/JWMM.R235-13

Publication History

Received: N/A
Accepted: N/A
Published: February 15, 2009

Status

# reviewers: 2
Version: Final published

Copyright

© 2009 CHI. Some rights reserved.

The Journal of Water Management Modeling is an open-access (OA) publication. Open access means that articles and papers are available without barriers to all who could benefit from them. Practically speaking, all published works will be available to a worldwide audience, free, immediately on publication. As such, JWMM can be considered a Diamond, Gratis OA journal.

Paper and publication copyrights are summarized here. JWMM content can be downloaded, printed, copied, distributed, and linked-to when providing full attribution to both the author/s and JWMM.


AUTHORS

David Judi

Los Alamos National Laboratory, Salt Lake City, UT, USA

Alfred J. Kalyanapu

University of Utah, Salt Lake City, UT, USA

Timothy McPherson

Los Alamos National Laboratory, Los Alamos, NM, USA

Steven Burian

University of Utah, Salt Lake City, UT, USA

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