Effect of irrigation reservoir,  antecedent soil moisture condition and Huff time distribution on peak discharge in a basin

Minsung Kwon; Jae-Hyun Ahn; Kyung Soo Jun; Tae-Woong Kim

doi:10.3741/JKWRA.2018.51.5.417

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Effect of irrigation reservoir, antecedent soil moisture condition and Huff time distribution on peak discharge in a basin 농업용 저수지, 선행토양함수조건 및 Huff 시간 분포가 유역의 첨두홍수량에 미치는 영향 분석

31 May 2018. pp. 417-424

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Abstract

This study analyzed the effect of irrigation reservoirs, antecedent soil moisture conditions (AMC) and Huff time distribution on peak discharge using Monte Carlo simulation. The peak discharge was estimated for four different cases in combination of irrigation reservoir capacity, AMC, and Huff time distribution. Applying 100% reservoir capacity or AMCIII, the peak discharges corresponding return periods of 50~300 years were overestimated by 25~30% compared to those of cases that considered the probability of occurrence for individual condition. Applying the 3rd quantile huff distribution, the peak discharges were overestimated by 5% over the peak discharge that considered the probability of occurrence. The overall results indicated that the effect on the peak flood of Huff distribution was less than AMC and reservoir storage.

Keywords

Antecedent soil moisture condition

Huff time distribution

Irrigation reservoir

Peak discharge

본 연구에서는 농업용 저수지의 저수율, 선행토양함수조건(AMC) 및 Huff 시간분포가 첨두유출량에 미치는 영향을 몬테칼로 시뮬레이션을 통해 분석하였다. 저수지 저수율, 선행토양함수조건 및 Huff 시간분포의 적용에 따라 4가지 경우에 대해 첨두홍수량을 산정하고 비교한 결과, 50~300년 빈도의 첨두홍수량은 저수율 100% 또는 AMCIII로 일괄 적용했을 때 각 조건의 발생확률을 고려한 첨두홍수량에 비해 20~30% 크게 산정되었다. Huff 3분위를 일괄 적용했을 때의 첨두홍수량은 발생확률을 고려한 Huff 분위 적용에 비해 5% 크게 산정되어, AMC와 저수지 저수율에 비해 첨두홍수량에 미치는 영향이 적었다.

키워드

선행토양함수조건

Huff 시간분포

농업용 저수지

첨두홍수량

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Information

Publisher :KOREA WATER RESOURECES ASSOCIATION
Publisher(Ko) :한국수자원학회
Journal Title :Journal of Korea Water Resources Association
Journal Title(Ko) :한국수자원학회 논문집
Volume : 51
No :5
Pages :417-424
Received Date : 2018-01-13
Revised Date : 2018-02-04
Accepted Date : 2018-02-04
DOI :https://doi.org/10.3741/JKWRA.2018.51.5.417

Journal of Korea Water Resources Association ISSN:2799-8746(Print) 2799-8754(Online) 한국수자원학회 논문집

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