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http://dx.doi.org/10.12652/Ksce.2015.35.6.1269

Flood Alert and Warning Scheme Based on Intensity-Duration-Quantity (IDQ) Curve considering Antecedant Moisture Condition  

Kim, Jin-Gyeom (Dankook University)
Kang, Boosik (Dankook University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.35, no.6, 2015 , pp. 1269-1276 More about this Journal
Abstract
The methodology of utilizing Intensity-Duration-flood Quantity (IDQ) curve for flood alert and warning was introduced and its performance was evaluated. For this purpose the lumped parameter model was calibrated and validated for gauged basin data set and the index precipitation equivalent to alert and warning flood was estimated. The index precipitation and IDQ curves associated by three different Antecedant Moisture Conditions (AMCs) are made provision for various possible flood scenarios. The test basin is Wonju-cheon basin ($94.4km^2$) located in Gangwon province, Korea. The IDQ curves corresponding to alert (50% of design flood level) and warning (70% of design flood level) level was estimated using the Clark unit hydrograph based lumped parameter model. The performance evaluation showed 0.704 of POD (Probability of Detection), 0.136 of FAR (False Alarm Ratio), and 0.633 of CSI (Critical Success Index), which is improved from the result of IDQ with single fixed AMC.
Keywords
Flood alert and warning; Clark unit hydrograph; Intensity-duration-quantity curve; Antecedent moisture condition; Flash flood guidance;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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