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Study on the Runoff Estimation Considering Stream Order  

Choi, Jong-In (삼척대학교 토목공학과)
Kang, Sang-Hyeok (삼척대학교 환경공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.5, no.4, 2005 , pp. 17-27 More about this Journal
Abstract
In this paper the watershed is divided by stream order law of Horton to estimate the runoff with stream order. We use the contour data to extract spatially distributed topographical information like stream channels and networks of sub-basins. A contour model is developed, validated, and adopted to estimate the effective stream order number for the runoff. The results show that the peak discharge which is divided into first river order was close to observed one. The contour model will provide effective informations to plan river works classified by sub-basins for river restoration.
Keywords
River restoration planning; river-order; contour model; runoff characteristics;
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