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Water 2018, 10(8), 1074; https://doi.org/10.3390/w10081074

Applicability Assessment of Estimation Methods for Baseflow Recession Constants in Small Forest Catchments

Department of Forest Restoration, National Institute of Forest Science, Seoul 02455, Korea
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Received: 5 July 2018 / Revised: 9 August 2018 / Accepted: 9 August 2018 / Published: 11 August 2018
(This article belongs to the Section Hydrology)
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Abstract

In South Korea, since small forest catchments are located upstream of most river basins, the baseflow from these catchments is important for a clean water supply to downstream areas. Baseflow recession analysis is widely recognized as a valuable tool for estimating the baseflow component of the stream hydrograph. However, few studies have applied this tool to small forest catchments. So, this study was conducted to assess the applicability of the recession analysis methods proposed in previous studies. The data used were long-term rainfall-runoff data from 1982 to 2011 in the Gwangneung coniferous (GC) and deciduous (GD) forest catchment in Gyeonggi-do, South Korea. For the applicability assessment, six recession constant estimation methods, which were used by previous studies, were selected. The recession constants of the GC and GD catchments were calculated, and applicability assessments were conducted by comparing the recession predictions and baseflow separations. As a result, the recession constants for GC and GD were 0.8480 and 0.9235, respectively. This clear difference may be due to the different forest cover in each area. The correlation regression line, AR(1) model, and the Vogel and Kroll method showed lower error rates and appropriate baseflow indexes compared with other methods. View Full-Text
Keywords: small forest catchment; baseflow recession characteristics; hydrograph analysis; recession constant estimation method small forest catchment; baseflow recession characteristics; hydrograph analysis; recession constant estimation method
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Yang, H.; Choi, H.T.; Lim, H. Applicability Assessment of Estimation Methods for Baseflow Recession Constants in Small Forest Catchments. Water 2018, 10, 1074.

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