Hydrologic Evaluation of Grid-based Global Climate Data for Use in Ungauged Watershed

Cho, Jaepil; Kim, Chul-Gyum; Hwang, Syewoon; Shin, Jihyeon; 박지훈,

doi:10.15531/ksccr.2019.10.1.23

Cited by 1 publication

(1 citation statement)

References 15 publications

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“…소하천 정비를 위한 설계에 있어서 해당 지역의 수문기상 정보가 필수적으로 요구된다. 일반적으로 설계홍수량 추정 에 필요한 정보는 인근 지역의 기상 관측 자료를 활용하여 수문 모델링 또는 강우-유출 관계 분석법 등을 통해 검정된 홍수량 모의 결과를 바탕으로 유출 특성의 재현성을 확보하 게 된다 (Chae et al, 2018;Cho et al, 2019 (Stedinger et al, 1993;Kim et al, 2018). 따라서 신뢰도 높은 설계홍수량 산정을 위해 다양한 소하천 유역의 관측 홍수량자료가 요구되고 있는 실정이다.…”

Section: 서 론unclassified

Selection of Small Stream Basins and Characteristics Analysis of Closed-circuit Television-based Automated Discharge Measurement Technology

Joo¹,

Byeon²,

Seojun³

et al. 2020

J. Korean Soc. Hazard Mitig

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The purpose of this study is to produce a guideline for collecting essential data, such as hydraulic and hydrologic data, in unmeasured streams. Most small streams are unmeasured basins, and sufficient data has not been collected for designing floods to achieve adequate disaster response and management. The flood design of unmeasured streams in Korea is typically performed using numerical-based analysis and stochastic methods. However, it is known that the most suitable method is the flood frequency analysis using observed flood data. In this study, a field survey of 89 small streams across the country for two years (2018 and 2019) was performed to select the optimum sites for measuring the flow rates. A total of 79 small streams were selected, excluding small streams that failed to satisfy the criteria for conformity with the closed-circuit television-based automatic discharge measurement technology (CADMT). In addition, information on the characteristics of the small streams was collected from the National Disaster Management System to analyze the correlations between the selected streams. The results showed that the correlations significantly depended on the basin area. If we classify the small streams according to the basin area and then select the small measuring stream to apply CADMT, we can obtain useful hydraulic data from the various small streams.

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Section: 서 론unclassified