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HWR Seminar: Ali Varmaghani

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January 31, 2014 @ 1:30 pm - 2:30 pm

| Free

Title: Release Time Component of Hydrograph and Its Application in Rainfall-Runoff Prediction Models

Presented by: Ali Varmaghani
IIHR Ph.D student
Dept. of Civil Engineering, The University of Iowa

Abstract: The most important hazard that has threatened Iowans for years is flood. Precise analysis and prediction of flooding requires strong knowledge of rainfall-runoff process or hydrograph. One of the most important components of hydrograph is “release time” which has received less attention in the literature. Even though release time is a key component in event-based rainfall-runoff models, there is still ambiguity between the basic concepts of release time and other temporal components. In this presentation, we will clarify the concepts of release time and time of concentration, introduce new concept of partial release time in a hydrograph, and suggest equations for their estimation based on Clark’s hydrograph. Finally, the importance of release time will be tested and justified on May Creek basin of Washington State utilizing Artificial Neural Network (ANN) technique to predict event-based rainfall-runoff events.


January 31, 2014
1:30 pm - 2:30 pm


Stanley Hydraulics Lab
127 SHL
Iowa City, IA 52242 United States
Posted on January 27th, 2014

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