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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/hess-2016-194
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
09 May 2016
Review status
This discussion paper has been under review for the journal Hydrology and Earth System Sciences (HESS). A final paper in HESS is not foreseen.
Application of runoff coefficient and rainfall-intensity-ratio to analyze the relationship between storm patterns and flood responses
Nam Won Kim, Mun-Ju Shin, and Jeong Eun Lee Water Resources & River Research Institute, Korea Institute of Civil Engineering and Building Technology, 283, Goyangdae-ro, Ilsanse -gu, Goyang-si, Gyeonggi-do, 411-712, Republic of Korea
Abstract. The analysis of the effects of storms on floods is essential for designing hydraulic structures and flood plains. Observations of the flow time series for the various catchment sizes are needed to understand the effects on floods, but it is not easy to obtain these datasets because most stream channels are ungauged. Hence, a reasonable method for generating the flow time series for the ungauged catchments is needed to secure the datasets. A quantitative analysis for investigating the relationship between the natural storm patterns, the peak flows, the volumes of floods, and their durations for the various catchment sizes is also needed. This study suggests a method to investigate quantitatively the relationship between storms and floods using datasets generated for the ungauged catchments. The relationship between the runoff coefficients and the rainfall-intensity-ratios with respect to catchment sizes for the dependent catchments showed that the events can be separated into four physically reasonable types using the pattern of storms and flood responses. This indicates that the relationship between the pattern of storms and flood responses for any event in terms of dependent catchments can be analyzed using plots of runoff coefficients and rainfall-intensity-ratios versus the catchment size. There are correlations between the runoff coefficients and the rainfall-intensity-ratios for the independent catchments, but these correlations have no relationship with the four types of events from the dependent catchments.

Citation: Kim, N. W., Shin, M.-J., and Lee, J. E.: Application of runoff coefficient and rainfall-intensity-ratio to analyze the relationship between storm patterns and flood responses, Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2016-194, 2016.
Nam Won Kim et al.
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RC1: 'reviewer comments', Anonymous Referee #1, 08 Jun 2016 Printer-friendly Version 
 
RC2: 'Review of the paper: Application of runoff coefficient and rainfall-intensity-ratio to analyze the relationship between storm patterns and flood responses', Anonymous Referee #2, 05 Jul 2016 Printer-friendly Version 
Nam Won Kim et al.
Nam Won Kim et al.

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Short summary
This study suggests relatively easy and pragmatic techniques that are data generation technique for the ungauged catchments, and an analysis technique to investigate the relationship between natural storm types and flood responses. For the dependent catchments, the events can be separated into four physically reasonable types using the pattern of natural storms and flood responses. But these four types cannot be applied for the event separation for the independent catchments.
This study suggests relatively easy and pragmatic techniques that are data generation technique...
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