Corrigendum: Evaluation of the implications of ice‐jam flood mitigation measures

Abstract

Journal of Flood Risk ManagementVolume 14, Issue 4 e12759 LETTER TO THE EDITOROpen Access Corrigendum: Evaluation of the implications of ice-jam flood mitigation measures First published: 20 September 2021 https://doi.org/10.1111/jfr3.12759AboutSectionsPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Corrigendum for the article: Das, A. and Lindenschmidt, K.-E. (2021) Evaluation of the implications of ice-jam flood mitigation measures. Journal of Flood Risk Management 2021: e12697. https://doi.org/10.1111/jfr3.12697 Since its publication, we have replaced our exceedance probabilities P in Equation (3) with a formulation provided by Gerard and Karpuk (1979). While distributions and associated parameters to developed exceedance probabilities are well developed in open-water hydrology, there is no solid or well-developed approach for ice-affected river stages. Therefore, scientists and engineers rely on graphical or nonparametric statistical techniques, such as Weibull, Hazen, median or the formula proposed by Gerard and Karpuk (1979) to calculate exceedance probabilities. Hence, for this study, we decided to use the latter formula (Gerard & Karpuk, 1979): where m is the rank of each ice-jam water level elevation, N is the total number of simulations and X is a value exceeding x (White & Beltaos, 2008). We found that the overall conclusions do not change but that only the total annual expected damages are scaled up by a factor of approximately 3, to $11.3 million for the town of Fort McMurray, a value which is in line with a result of $10.4 million by IBI and Golder Associates Ltd. (2014). Updated Figures 7 and 8 are provided below. FIGURE 7Open in figure viewerPowerPoint Flood risk maps for different mitigation scenarios along the Athabasca River at Fort McMurray FIGURE 8Open in figure viewerPowerPoint The expected annual damages from the ensemble of flood risk maps for different mitigation scenarios at Fort McMurray The paragraph immediately before Section 4 should read: The EAD of different mitigation scenarios are demonstrated in Figure 8. The results show that artificial breakup and 250 m a.s.l dike crest elevation can reduce the most ice-jam flood risk among all the mitigation scenarios. While the base scenario has the maximum EAD, about $11.2 million, artificial breakup has an EAD of about $1.7 million. The 250 m a.s.l dike crest elevation also has a great potential to reduce the flood risk, which could reduce the EAD to $0.95 million. Although the sediment dredging scenarios could reduce the EAD to a certain level, they may be less effective compared to the other two mitigation measures, 250 m a.s.l. crest-elevation dike and artificial breakup. Moreover, the optimum result was found to be for 3 m dredging in which the EAD was reduced to about $5.8 million. Further studies, by changing the dredging location, can be applied to identify the potential of sediment dredging to reduce flood risk. The tenth line in Section 4 “Discussion and concluding remarks” should read: “… the results show that artificial breakup has the second highest potential to reduce the EAD, as the number of buildings exposed to flood risk significantly reduce in this scenario.” Open Research DATA AVAILABILITY STATEMENT Data sharing is not applicable to this article as no new data were created or analyzed in this study. REFERENCES Gerard, R., & Karpuk, E. W. (1979). Probability analysis of historical flood data. Journal of the Hydraulics Division, 105(9), 1153– 1165. CrossrefGoogle Scholar IBI and Golder Associates Ltd. (2014). Report feasibility study—Athabasca River Basins. Prepared for Government of Alberta—Flood recovery Task Force. Retrieved from https://open.alberta.ca/publications/35751. Google Scholar White, K., & Beltaos, S. (2008). Chapter 9: Development of ice-affected stage frequency curves. In River ice break-up. Water Resources Publications, Highlands Ranch, Co. Google Scholar Volume14, Issue4December 2021e12759 FiguresReferencesRelatedInformation