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A Framework for Planning and Evaluating the Role of Urban Stream Restoration for Improving Transportation Resilience to Extreme Rainfall Events

1
Department of Biological and Agricultural Engineering, North Carolina State University and North Carolina Sea Grant, Raleigh, NC 27695, USA
2
Department of Biological and Agricultural Engineering, North Carolina State University, Raleigh, NC 27695, USA
*
Author to whom correspondence should be addressed.
Water 2020, 12(6), 1620; https://doi.org/10.3390/w12061620
Received: 30 March 2020 / Revised: 13 May 2020 / Accepted: 3 June 2020 / Published: 6 June 2020
(This article belongs to the Special Issue Urban Water Management and Urban Flooding)
Recent extreme rainfall events produced severe flooding across North Carolina’s Coastal Plain, revealing deep vulnerabilities in many communities. Climate change is expected to exacerbate these problems by further increasing rainfall intensity and the frequency of extreme rainfall events. Due to the risks posed by these changing rainfall patterns, a shift in the approach to infrastructure planning and management is needed for many floodprone communities, particularly in regard to managing streams and floodplains in urban areas. This study proposes a framework for systematically evaluating stream restoration in combination with engineered improvements to culvert and bridge crossings to identify and optimize options for mitigating extreme events in urban areas. To illustrate the methodology, extensive hydraulic modeling was conducted to test four different strategies for reducing flooding along a channelized and armored stream, Big Ditch, located in Goldsboro, North Carolina, USA. The results indicate that neither floodplain restoration nor infrastructure modification alone could alleviate flooding along Big Ditch. Rather, a combination approach would be required to mitigate flooding, which could result in substantial benefits for storms in excess of the 100-year event. The results suggest that shifting to a multi-faceted approach to improve resiliency to extreme events could improve public safety and reduce future damages due to flooding. View Full-Text
Keywords: stream restoration; flooding; climate change; extreme events; transportation resilience stream restoration; flooding; climate change; extreme events; transportation resilience
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MDPI and ACS Style

Doll, B.A.; Kurki-Fox, J.J.; Line, D.E. A Framework for Planning and Evaluating the Role of Urban Stream Restoration for Improving Transportation Resilience to Extreme Rainfall Events. Water 2020, 12, 1620. https://doi.org/10.3390/w12061620

AMA Style

Doll BA, Kurki-Fox JJ, Line DE. A Framework for Planning and Evaluating the Role of Urban Stream Restoration for Improving Transportation Resilience to Extreme Rainfall Events. Water. 2020; 12(6):1620. https://doi.org/10.3390/w12061620

Chicago/Turabian Style

Doll, Barbara A., J. J. Kurki-Fox, and Daniel E. Line 2020. "A Framework for Planning and Evaluating the Role of Urban Stream Restoration for Improving Transportation Resilience to Extreme Rainfall Events" Water 12, no. 6: 1620. https://doi.org/10.3390/w12061620

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