Flood Routing Program

by Bernard L. Golding, (M.ASCE), Chief; Water Resources (South), Howard Needles Tamman & Bergendoff, Orlando, Fla.,

Serial Information: Civil Engineering—ASCE, 1981, Vol. 51, Issue 6, Pg. 74-75

Document Type: Feature article


This is the fourth article in Civil Engineering—ASCE's computer series. A BASIC language program is presented for routing floods through storage reservoirs or detention basins by the storage-indication working curve method (Modified Plus Method). A sample program is included and explained step-by-step. Standard flood routing equations are included. Many municipalities require that post-development runoff cannot exceed pre-development runoff in their subdivision regulations. This is normally done by building a retention basin which acts as a small flood control reservoir. Thus this program flood routes the design inflow hydrograph through the storage of the basin.

Subject Headings: Flood routing | Water storage | Reservoirs | Runoff | Retention basins | Detention basins | Curvature | Local government

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