Due to climate changes, the frequency of intensive rainfall events keeps on increasing. For example, some areas in downtown Seoul were flooded by localized heavy rainfalls in series (2010 and 2011).
The government prepared the “Comprehensive Plan on Sewage Maintenance against Urban Flooding” in May 2012 in order to improve the drainage capacity of public sewage system. It involves (1) constructing facilities such as stormwater detention vaults or deep tunnel stormwater storage systems, (2) implementing advanced design and operation techniques to drain stormwater and (3) reforming institutions to prevent flooding.
The flood-prone areas will be designated as “Priority Area for Sewage Maintenance” and managed more thoroughly. After the system was introduced in February 2012, 21 sites were designated as “Priority Area for Sewage Maintenance” by until the end of 2013. The number of the designated sites will be increased to 60 by 2017.
Sewage infrastructures such as stormwater pipelines, sewage detention facilities, stromwater pumping stations are also being expanded. As a pilot project, 232.7 billion KRW is invested at the 6 selected sites for upgrading the sewage infrastructures. The deep stormwater storage system is constructed at the sites where it is not sufficient to prevent urban flooding by expanding stormwater pipelines and detention facilities. A technical support team is operated by the Korea Environment Corporation to relieve the administrative burden and to shorten the construction period.
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Last modified : 2017-12-12 08:38
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