Articles | Volume 25, issue 1
https://doi.org/10.5194/hess-25-257-2021
https://doi.org/10.5194/hess-25-257-2021
Research article
 | 
18 Jan 2021
Research article |  | 18 Jan 2021

Ubiquitous increases in flood magnitude in the Columbia River basin under climate change

Laura E. Queen, Philip W. Mote, David E. Rupp, Oriana Chegwidden, and Bart Nijssen

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (further review by editor and referees) (04 Mar 2020) by Daniel Viviroli
AR by Philip Mote on behalf of the Authors (22 Apr 2020)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (28 Apr 2020) by Daniel Viviroli
RR by Anonymous Referee #4 (25 May 2020)
ED: Reconsider after major revisions (further review by editor and referees) (09 Jun 2020) by Daniel Viviroli
AR by Philip Mote on behalf of the Authors (15 Aug 2020)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (24 Aug 2020) by Daniel Viviroli
RR by Anonymous Referee #4 (23 Sep 2020)
ED: Reconsider after major revisions (further review by editor and referees) (05 Oct 2020) by Daniel Viviroli
AR by Philip Mote on behalf of the Authors (02 Nov 2020)  Author's response   Manuscript 
ED: Publish subject to technical corrections (07 Nov 2020) by Daniel Viviroli
AR by Philip Mote on behalf of the Authors (25 Nov 2020)  Author's response   Manuscript 
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Short summary
Using a large ensemble of simulated flows throughout the northwestern USA, we compare daily flood statistics in the past (1950–1999) and future (2050–1999) periods and find that nearly all locations will experience an increase in flood magnitudes. The flood season expands significantly in many currently snow-dominant rivers, moving from only spring to both winter and spring. These results, properly extended, may help inform flood risk management and negotiations of the Columbia River Treaty.