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Modeling Support for Stormwater Management

by D. W. Meier, Walter B. Satterthwaite Associates, Inc, West Chester, PA, USA,
D. F. Lakatos, Walter B. Satterthwaite Associates, Inc, West Chester, PA, USA,



Document Type: Proceeding Paper

Part of: Engineering Hydrology

Abstract:

An innovative 'digitization' procedure has been developed and successfully utilized to accurately and economically prepare and manage the extensive amount of data required for watershed-wide stormwater management simulation computer models. Developed for use with the IBM-PC versions of the Penn State Runoff Model (PSRM) and TR-20, the digitization package is initially used to define physical watershed characteristics required as input into the models. Additional routines (which are available to the client for use on their personal computer after the initial model is prepared and calibrated) include the capability to digitally update the computer model as land use changes occur within an urbanizing watershed. An overlay analysis procedure superimposes the 'digital map files' of different attributes to highlight areas having desired land characteristics. A case study illustrates the usefulness of the program.

Subject Headings: Computer models | Stormwater management | Watersheds | Simulation models | Physical models | Mathematical models | Model accuracy

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