ASCE will be sunsetting the Civil Engineering Database (CEDB) in the coming months. We encourage you to start using the ASCE Library to perform content searches. In the ASCE Library, you can save your search results as well as receive email content alerts when new content relevant to your area of interest is published. Try it out today at https://ascelibrary.org.

 

Comparison of Tenn-V and TR-55 on TVA Watersheds

by Donald E. Overton,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

The storm hydrograph simulation models TENN-V and TR-55 were compared as to their respective abilities to reproduce 468 storms observed on 54 watersheds. TR-55 did not represent the Tennessee Valley data with any acceptable degree of accuracy. The reasons for the inability of TR-55 to accurately represent the TVA data are that (1) TR-55 is a linear system representation whereas surface runoff response is very non-linear, (2) the shape of the underlying Unit Response Function (URF), for which surface runoff response in TR-55 is based upon, bears little resemblance to the experimentally derived URFs, and (3) lag time predicted by TR-55 not only involves considerable subjectivity in estimation but also the SCS prediction system for lag time does not vary with the causative rainfall excess.

Subject Headings: Watersheds | Storms | Simulation models | Runoff | Hydrologic models | Rainfall-runoff relationships | Rain water | Tennessee | United States

Services: Buy this book/Buy this article

 

Return to search