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http://dx.doi.org/10.3741/JKWRA.2021.54.3.203

Analysis of changes in cross section and flow rate due to vegetation establishment in Naeseong stream  

Lee, Tae Hee (Hydrological Survey Department, Korea Institute of Hydrological Survey)
Kim, Su Hong (Hydrological Survey Department, Korea Institute of Hydrological Survey)
Publication Information
Journal of Korea Water Resources Association / v.54, no.3, 2021 , pp. 203-215 More about this Journal
Abstract
In the present study, hydrologic data and topographical data from 2010 to 2019 were collected from three gauging stations placed in the watershed of Naeseong stream to determine changes and rates of changes in rainfall, water level & mean velocity, and water level & discharge, together with changes in rates of erosion and deposition at cross-sections of the river. Besides, effects of regulated and non-regulated rivers according to the presence of artificial regulation of flow rate of the river via artificial structure located at Seo stream (Yeongju si (Wolhogyo) station), the tributary free from construction of dams, were compared and analyzed. Results of analyses conducted in the present study revealed vegetational establishment and landforming due to increasing area of vegetational sandbar evolved in the flood plain (intermediate- or high- water level) by the drought sustained from 2013 to 2015. Continuous erosion of river bed was appeared because of narrowed flow area with low water level and increased velocity and tractive force on river bed.
Keywords
Alluvial river; Vegetational establishment; Landforming; Vegetational sandbar; River-bed erosion;
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Times Cited By KSCI : 1  (Citation Analysis)
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