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徐承德,宋永立,千萬福 경북대학교 산업기술연구소 1990 産業技術硏究誌 Vol.18 No.-
The purpose of this study is to develop regression equation between physical characteristic factors of watershed of irrigation reservoirs(122 reservoirs), which are in operation for 3 to 65 years and have irrigation area equal to or larger than 200 has, located in South Korea are used in the analysis. The results obtained from this study are as follows. 1. In each province, the relationships between watershed area and main stream length, circumferential length, and number of streams, and that between main stream length and total tributary length have high correlation and high stastical significance. 2. It is found that the ratios of main stream length to circumferential length, total tributary length, and centroid length are 1:3, 1:3, and 1:0.5, respectively. 3. Watershed unit characterisitics are found that the shape factor of 0.44, the stream compactness of 0.79, the stream density of 1,63㎞/㎢, the stream frequency of 1.06piece/㎢, the relief factor of 45.6 m/㎞ and the average watershed altitude of 194.2m, respectively. The result of this study are useful for understanding correlation between watershed characteristic factors of reservoirs.