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Comparison of Hydrograph Simulation Techniques Used in Structural Design and Watershed Systems Modeling

by Clarence H. Robbins, MCI Consulting Engineers Inc, Nashville, TN, USA,
Andrew J. Reese, MCI Consulting Engineers Inc, Nashville, TN, USA,
W. Brian Bingham, MCI Consulting Engineers Inc, Nashville, TN, USA,



Document Type: Proceeding Paper

Part of: Engineering Hydrology

Abstract:

This paper describes a basin study in which traditional unit hydrograph analysis methods were compared to the E. J. Inman hydrograph technique. Study results indicate that, where suitable estimates of lagtime and peak discharge can be obtained, the recently developed Inman hydrograph approach can be accurate and cost effective. This is particularly true where time, cost, or data availability constraints preclude the use of other methods and where preliminary flow volume estimates must be made. It was also evident that lagtime is a critical factor and errors in this parameter are directly related to errors in hydrograph width.

Subject Headings: Hydrographs | Hydrologic models | Hydraulic models | Errors (statistics) | Watersheds | Structural models | Simulation models

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