Volume 4, Issue 1 (March 2006)                   IJCE 2006, 4(1): 34-41 | Back to browse issues page

XML Print

Abstract:   (7961 Views)
Time–Area method is one of the most widely applied techniques of watershed routing, and can be potentially used as a distributed model. In this paper, a fundamental flaw in the arrangement of subareas in the original time-area histogram is identified for one-dimensional flow. This is conducted on the basis of comparing time-area hydrograph with that of the kinematic wave theorem. Accordingly, a revised time-area algorithm is developed as a substitute for the original time-area. It is proved that in the revised approach, subareas must be reversely arranged. It is also shown that the revised time-area hydrograph is in perfect agreement with the hydrograph derived by the kinematics wave theory.
Full-Text [PDF 118 kb]   (3201 Downloads)    
Type of Study: Research Paper |