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CRC PUBLICATIONS |
Investigation of a Variable Proportional Loss Model for Use in Flood Estimation
L. Siriwardena
P.I. Hill
R.G. Mein
Publication Type:
Technical Report
This is a publication of the initial CRC for Catchment Hydrology
CRC Program:
Flood Hydrology (Previous CRC)
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Publication Keywords:
Flood Foreacsting
Floods and Flooding
Rainfall/Runoff Relationship
Modelling (Hydrological)
Catchment Areas
Coefficient
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Abstract / Summary:
A major aim of the CRC Project "Improved Loss Modelling for Design Flood Estimation and Flood Forecasting" was to reduce the uncertainties inherent in current procedures for estimating runoff generation from storm rainfall. The establishment of a large integrated database of rainfall and runoff observations was a key component of the project, since the development and testing of new loss models relied heavily on observed catchment behaviour.
The work reported here deals with the investigation of a variable proportional loss model to describe the change in runoff producing areas observed in catchments during storms. It also examines the use of pre-storm baseflow as a practical and reliable indicator of the antecedent wetness of a catchment.
The research has produced a significant advance in the empirical knowledge of losses and their role in design and real-time flood estimates. Parts of the work can already be used in the early estimation of real time flood response, before updating procedures, using observed data.
Russell Mein
Leader, Flood Hydrology Program
CRC for Catchment Hydrology
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Centre Office:
CRC for Catchment Hydrology
Dept of Civil Engineering
Building 60
Monash University Vic 3800
Tel: +61 3 9905 2704
Fax: +61 3 9905 5033
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