ABSTRACT
Hydraulic routing is a numerical scheme to transport a hydrograph through a well-defined channel. Hydrologic routing is also called reservoir routing because it is a numerical procedure to solve the conservation among water volumes flowing through a reservoir. This chapter illustrates how solutions can be obtained from the storage routing function and storage–outflow curve. The environmental protection agency (EPA) Storm Water Management Model suggests that a kinematic wave routing method be developed for both overland and channel flows. The basic concept is to consider each reach as a reservoir. The direct routing method, also called the time shift method, was developed to transfer a hydrograph from one design point to the next without any routing process. The direct routing method is commonly used in watershed modeling for numerical convenience. To avoid any numerical attenuation on the resultant hydrograph, the direct routing method is an applicable method to transfer information from one node to another node on a numerical model.
