Hydrology Rainfall - Runoff Modeling (I). Prof. Ke-Sheng Cheng Department of Bioenvironmental Systems Engineering National Taiwan UNiversity. Formation process of surface runoff. Surface runoff overland flow (sheet flow) shallow concentrated flow open channel flow. Runoff hydrograph .
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Prof. Ke-Sheng Cheng
Department of Bioenvironmental Systems Engineering
National Taiwan UNiversity
Then the recession constant K is then taken as the product of recession constants for three individual components, i.e.,
where Ks, Ki and Kg are recession constants associated with surface storage, interflow and groundwater flow, respectively.
Also need to consider the storm duration and time of concentration.
Effective rainfall – direct runoff conversion rainfall and direct runoff are respectively the input and output of this system.