Steps towards an early warning model for flood forecasting in Durazno city in Uruguay

被引：3
|
作者：
Silveira, L. [1 ]
Lopez, G. [1 ]
Chreties, C. [1 ]
Crisci, M. [1 ]
机构：
[1] Univ Republ Montevideo, Dept Fluid Mech & Environm Engn, Fac Engn, Montevideo, Uruguay
来源：
JOURNAL OF FLOOD RISK MANAGEMENT | 2012年 / 5卷 / 03期
关键词：
Decision support system; flooded areas; hydrologic-hydrodynamic model; rainfall forecasts;
D O I：
10.1111/j.1753-318X.2012.01146.x
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A hydrologic-hydrodynamic model of the Yi River basins in Uruguay has been developed as a support tool to the Emergency Coordination Centre of Durazno city. The purpose was to improve the existing decision support system and the emergency planning by providing information on gauge height and its permanence in time, and the risk of flooded areas. Four past flood events of high return period were used for calibration and validation with accurate results. The input data to the operational model in real time are hourly observed rainfall and gauge height, as well as rainfall forecasts by several international sources. The use of predictions from numerical weather forecasts allows for the generation of pre-alert scenarios with larger lead time. These scenarios can warn the emergency coordinators, and thus are of great value to premanage a probable emergency. Operation of a meteorological weather alert issued by the National Meteorological Board is discussed.
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页码：270 / 280
页数：11
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