A Hybrid Model for Storage Routing Through Rock Dumpsby Anand Prakash, Dames & Moore, Golden, CO, USA,
Document Type: Proceeding Paper
Part of: Engineering Hydrology
Construction of permeable structures across stream channels results in temporary impoundment of flood waters upstream of such structures. This happens because the hydraulic conveyance of the structure is considerably less than that of the natural channel. To develop the outflow hydrograph downstream of such structures, a hybrid model is developed which is made up of two main components. The first part performs storage routing computations through the impoundment and the second performs computations for unsteady one-dimensional turbulent flow through the rockfill. Like most storage routing programs, the model operates iteratively until the volume of outflow in each small time interval equals the difference between the incremental inflow and storage. The model can be used to predict the attenuated outflow hydrography for storm hydrographs from watersheds upstream of a rockfill.
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