Home >

news Help

Publication Information


Title
Japanese: 
English:Use of Seasonal Streamflow Forecasts for Flood Mitigation with Adaptive Reservoir Operation: A Case Study of the Chao Phraya River Basin, Thailand, in 2011 
Author
Japanese: KOMPORWONGNARIN, 吉川 沙也花, 鼎信次郎.  
English: Wongnarin Kompor, Sayaka Yoshikawa, Shinjiro Kanae.  
Language English 
Journal/Book name
Japanese: 
English:Water 
Volume, Number, Page Volume 12    Issue 11    3210
Published date Nov. 2020 
Publisher
Japanese: 
English:Multidisciplinary Digital Publishing Institute 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL https://www.mdpi.com/2073-4441/12/11/3210
 
DOI https://doi.org/10.3390/w12113210
Abstract Predicting streamflow can help water managers make policy decisions for individual river basins. In 2011, heavy rainfall from May until October resulted in the largest flood event in the history of Thailand. This event created difficulty for water managers, who lacked information to make predictions. Studies on the 2011 Thai flood have proposed alternative reservoir operations for flood mitigation. However, no study to date has used predictive information to determine how to control reservoirs and mitigate such extreme floods. Thus, the objective of this study is to update and develop a method for using streamflow predictive data to support adaptive reservoir operation with the aim of mitigating the 2011 flood. The study area was the Chao Phraya River Basin, one of the most important basins in Thailand. We obtained predictive information from a hydrological model with a reservoir operation module using an ensemble of seasonal precipitation data from the European Centre for Medium–Range Weather Forecasts (ECMWF). The six-month ECMWF prediction period was used to support the operation plan for mitigating flooding in 2011 around each reservoir during the wet season. Decision-making for reservoir operation based on seasonal predictions was conducted on a monthly time scale. The results showed that peak river discharge decreased slightly, by around 4%, when seasonal predictive data were used. Moreover, changing the reservoir operation plan and using seasonal predictions decreased the peak river discharge by around 20%. View Full-Text

©2007 Tokyo Institute of Technology All rights reserved.