Correlation analysis between small watershed area and design flood in the west mountain regions of Hubei
HUANG Zhiqiang1, JI Yahui1, YAN Tuanjin2, JING Xiaoju1
1. Hubei Water Resources Research Institute, Wuhan 430070; 2. Hanjiang-to-Weihe River Water Diversion Project Construction Co. Ltd., Shaanxi Province, Xi'an 710100
Abstract：As one of the tasks of Mountain Flood Disaster Survey and Evaluation Project，this study，taking 117 small watersheds in Lichuan County in the west mountain regions of Hubei，calculated design flood of small watersheds by instantaneous unit hydrograph method. Based on the calculation result，the relationship between the small watershed area and design flood was analyzed. The case illustrated that there was a power function relationship between the small watershed area and the design flood，with the correlation exponent of regression equation over 0.99 and P-value of significance test less than 0.01 when the areas were less than or equal to 200 km2. This study has reference significance for selection of design floods for small watersheds in the similar regions.
黄志强, 季亚辉, 闫团进, 景晓菊. 鄂西山区小流域汇流面积与设计洪水相关分析[J]. 中国防汛抗旱, 2018, 28(8): 36-40.
HUANG Zhiqiang, JI Yahui, YAN Tuanjin, JING Xiaoju. Correlation analysis between small watershed area and design flood in the west mountain regions of Hubei. journal1, 2018, 28(8): 36-40.
2018, Vol. 28 
