FLOOD RUNOFF ANALYSIS IN THE UPPER CHANGJIANG RIVER BASIN

This study aims to develop a physics-based flood runoff model to reproduce flood peak discharge at few-day duration in continental-scale rivers. Entire global meteorological data set ISLSCP Initiative I and entire global geographic data set GTOPO30 in USGS were used so that this model can be applied...

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Bibliographic Details
Published inPROCEEDINGS OF HYDRAULIC ENGINEERING Vol. 48; pp. 25 - 30
Main Authors KATO, Hiroyasu, MANO, Akira
Format Journal Article
LanguageEnglish
Published Japan Society of Civil Engineers 2004
Subjects
continental-scale
flood runoff
ISLSCP
physics based distributed model
water storage
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ISSN0916-7374
1884-9172
DOI10.2208/prohe.48.25

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Summary:This study aims to develop a physics-based flood runoff model to reproduce flood peak discharge at few-day duration in continental-scale rivers. Entire global meteorological data set ISLSCP Initiative I and entire global geographic data set GTOPO30 in USGS were used so that this model can be applied for any continental-scale river basin. To express groundwater, two serial tanks were attached to each sub-basin. Runoff intensities from each tank are expressed as a function of physics-based parameters, water depth in the tank, slope, and hydraulic conductivity according to Darcy's law. As a result of applying this model for the Upper Changjiang river basin in 1987 to 1988, this model reproduces the observed daily discharge at Yichang, the upper reach terminal, over the two years in good accuracy.
ISSN:0916-7374
1884-9172
DOI:10.2208/prohe.48.25