Water retention strategy Mekong Delta
The Mekong Delta Plan recommends to enlarge regional flood water retention capacity in Vietnam. Without such water storage, the river level rises in the peak season and decreases in the dry season.
Extensive dike building has reduced flooding in the upper Mekong Delta and enables farmers to grow three crops of rice a year. However, the large-scale resurrection of dikes also strips farmers from the advantages of flooding such as the deposition of fertile sediments and curtails regional flood water retention capacity.
Larger flood water retention capacity
Experts have seriously questioned the rationale behind building ever more and higher dikes. Consequently, the Mekong Delta Plan recommends to enlarge regional flood water retention capacity. Aiming to lay the groundwork for a water retention scheme, the Dutch government commissioned this initial fact-finding study to look into existing data (gaps) and expert opinions.