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Open AccessArticle

A Study on Climate-Driven Flash Flood Risks in the Boise River Watershed, Idaho

1
Department of Soil and Water Systems, University of Idaho, 322E. Front ST, Boise, ID 83702, USA
2
Texas A&M AgriLife Research (Texas A&M University System), P.O. Box 1658, Vernon, TX 76384, USA
*
Author to whom correspondence should be addressed.
Water 2019, 11(5), 1039; https://doi.org/10.3390/w11051039
Received: 15 March 2019 / Revised: 13 May 2019 / Accepted: 14 May 2019 / Published: 18 May 2019
(This article belongs to the Special Issue Extreme Floods and Droughts under Future Climate Scenarios)
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Abstract

We conducted a study on climate-driven flash flood risk in the Boise River Watershed using flood frequency analysis and climate-driven hydrological simulations over the next few decades. Three different distribution families, including the Gumbel Extreme Value Type I (GEV), the 3-parameter log-normal (LN3) and log-Pearson type III (LP3) are used to explore the likelihood of potential flash flood based on the 3-day running total streamflow sequences (3D flows). Climate-driven ensemble streamflows are also generated to evaluate how future climate variability affects local hydrology associated with potential flash flood risks. The result indicates that future climate change and variability may contribute to potential flash floods in the study area, but incorporating embedded-uncertainties inherited from climate models into water resource planning would be still challenging because grand investments are necessary to mitigate such risks within institutional and community consensus. Nonetheless, this study will provide useful insights for water managers to plan out sustainable water resources management under an uncertain and changing climate. View Full-Text
Keywords: flood frequency analysis; flash flood; climate change and variability; Boise River Watershed; HSPF flood frequency analysis; flash flood; climate change and variability; Boise River Watershed; HSPF
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Ryu, J.H.; Kim, J. A Study on Climate-Driven Flash Flood Risks in the Boise River Watershed, Idaho. Water 2019, 11, 1039.

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