• Title/Summary/Keyword: irrigation reservoir

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Characteristics and Correlation among Water Quality Parameters of Idong Reservoir Watershed (논문 - 이동저수지 유역의 수질 특성 및 항목간 상관관계 분석)

  • Kim, Hyung-Joong;Haam, Jong-Hwa;Kim, Dong-Hwan;Hong, Dae-Byuk
    • KCID journal
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    • v.18 no.2
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    • pp.15-24
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    • 2011

  • This study was carried out to analyze characteristics of water quality and correlation among water quality parameters in Idong reservoir used for agricultural water. The pH and concentrations of DO, SS, BOD, COD, TP, Chl-a in Idong reservoir almost met the water quality standards for agricultural water, but TN concentration exceeded the water quality standards for agricultural water. All of water quality items had no significant difference between horizontal points at 95% confidence level and the Idong reservoir was possible to be treated as the single water body. As NIP ratio of the Idong reservoir is 52, TP is a limiting nutrient salt. As TN exceeds the water quality standards, it is required to preserve TP below current state to prevent water bloom by eutrophication. Therefore, reduction of phosphorus from the watershed is necessary for controlling the eutrophication of Idong reservoir.

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Simplified Analysis of Agricultural Water Network Model Using SWMM - A Case Study of Mandae Reservoir - (SWMM을 활용한 농업용수 네트워크 모형 단순화 분석 - 만대 저수지 사례를 중심으로 -)

  • An, Sung-Soo;Bang, Na-Kyoung;Lee, Jong-Seo;Bang, Sung-Soo;Nam, Won-Ho;Kim, Han-Joong
    • Journal of The Korean Society of Agricultural Engineers
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    • v.64 no.1
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    • pp.27-37
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    • 2022

  • This study established a water supply network based on the operation case of Mandae Reservoir in Yanggu-gun, Gangwon-do, to analyze the efficient distribution and management of agricultural water supplied from the reservoir to irrigation areas using the hydraulic analysis model SWMM. In order to construct a model to analyze the water canal network, network conditions needs to be simplified, and in particular, excessive detail or simplification of the irrigation area can lead to errors in the analysis results. Therefore, the effect of the water canal network model was analyzed by simulating the appropriate simplification process step by step. The results of simplifying the actual block shape of the analysis target area using SWMM showed that there was no significant difference in the results even if 7 lots were simplified to 2. Also, it was found that the construction and analysis of a simplified network model were reliable when the excess quantity was 2% or more compared to the required quantity for each case of analysis of the paddy field.

  • https://doi.org/10.5389/KSAE.2022.64.1.027 인용 PDF KSCI HTML