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Multi-Objective Calibration of SWMM for Improved Simulation of the Hydrologic Regime

Mauricio Herrera, Isobel Heathcote, William James and Andrea Bradford (2006)
University of Guelph
https://doi.org/10.14796/JWMM.R225-15
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Abstract

This chapter presents a multi-objective calibration of the Storm Water Management Model (SWMM) using the Non-dominated Sorting Genetic Algorithm (NSGA-II) developed by Deb et al. (2001). The effects of model calibration on the representation of various hydrologic characteristics with ecologic and geomorphic relevance are studied. Results indicate that there are modeling conflicts between low flows, medium to bank-full flows, and high flows. As a consequence, calibration improvements of minimum water quality maintenance flows, decreases the agreement between computed and observed flows above bankfull elevations. The presence of these trade-offs should be acknowledged in model-based watershed management strategies in order to minimize the uncertainty bias towards certain characteristics of the flow regime. Results show the effects of such trade-offs in the model accuracy to represent different hydrologic quantities, such as mean monthly flows, peak monthly flow, minimum monthly flows, and flow durations and exceedance volumes for different flow ranges and months.

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PAPER INFO

Identification

CHI ref #: R225-15 874
Volume: 14
Cite as: CHI JWMM 2006;R225-15
https://doi.org/10.14796/JWMM.R225-15

Publication History

Received: N/A
Accepted: N/A
Published: February 15, 2006

Status

# reviewers: 2
Version: Final published

Copyright

© 2006 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

Mauricio Herrera

University of Guelph, Guelph, ON, Canada

Isobel Heathcote

University of Guelph, Guelph, ON, Canada

William James

University of Guelph, Guelph, ON, Canada

Andrea Bradford

University of Guelph, Guelph, ON, Canada

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