Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Temporal and Spatial Analysis of Hydrology and Water Quality in Small Rural Streams for Stream Depletion Investigation

건천화된 농촌소하천의 시·공간적 수문 수질 특성분석

  • 이예은 (경상대학교 대학원 농공학과) ;
  • 김상민 (경상대학교 지역환경기반공학과 (농업생명과학연구원))
  • Received : 2013.10.24
  • Accepted : 2013.11.29
  • Published : 2013.11.30
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Abstract

The purpose of this study was to analyze the temporal and spatial characteristics of the stream flow of small rural streams for investigating the status of stream depletion located downstream of irrigation reservoir. Bonghyun and Hai reservoirs and each downstream were selected for this study. Streamflow was measured for 8 stations downstream from two reservoirs from 2010 to 2012. The water quality samples were collected monthly from the 8 stream stations and 2 reservoir stations from 2011 to 2012. The stream depletion was found in most of the downstream of reservoirs for the non-irrigation period and even in the irrigation period when there were a lot of antecedent precipitation. We found that the stream segments where there were few streamflow, vegetation covers the stream and block the streamflow which makes the stream lost its original function as a stream. Water quality monitoring results of Bonghyun stream indicated that the concentration of SS, Turbidity, TOC, COD were decreased as the stream flows from the reservoir to downstream while the TN and TP were increased. The correlation analysis for water quality data indicated that the correlation between T-N and T-P was high for Bonghyeon and Sukji streams, respectively. Continuous monitoring for rural streams located in downstream of reservoirs are required to quantify the status of stream flow depletion and determine the amount of environmental flows.

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References

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Cited by

  1. Effects of Irrigation Reservoirs and Groundwater Withdrawals on Streamflow for the Anseongcheon Upper Watershed vol.35, pp.4, 2015, https://doi.org/10.12652/Ksce.2015.35.4.0835
  2. Impacts of Seasonal Pumping on Stream Depletion vol.21, pp.1, 2016, https://doi.org/10.7857/JSGE.2016.21.1.061
  3. Analysis of Water Quality Spatial Characteristics for Depleted Downstream of Agricultural Reservoir vol.48, pp.6, 2014, https://doi.org/10.14397/jals.2014.48.6.387