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Lesson 1 MARINA
BARRAGE
INTRODUCTION
The Marina Barrage is part of a comprehensive flood control scheme to alleviate
existing flooding in the low-lying areas of the city. With the Barrage and other
flood-alleviation projects, flood-prone areas in Singapore will be further
reduced from the current 150 ha to 85 ha, down from 3200 ha in the 1970s.
The Marina Barrage will enhance Singapore's water supply in line with
Singapore's Four National Taps water supply strategy to diversify its water
sources (The 4 National Taps are: local catchment, reclaimed water, desalted
water and imported water). The Marina Reservoir will have the largest urban
catchment of 10,000 ha among all the reservoirs. With this Project, about 60 per
cent of Singapore will become catchment area.
The Project is unique in that it is designed to achieve three aims: to act as a
tidal barrier for flood control, to create a new reservoir to augment the water
supply and to maintain a new body of freshwater at constant level in the heart
of the city as a major lifestyle attraction. The aesthetically pleasing water
body that is not subjected to tidal variations provides a new recreational place
for sports on the water.
When the Marina Barrage project is completed by the end of 2007, it will be a
prominent landmark in Marina South. The Project has been carefully designed to
blend in well with the environment, with guidance from Urban Redevelopment
Authority (URA)'s Design Advisory Panel.
HOW DOES THE BARRAGE WORK?
The barrage, which comprises nine numbers of 26.8-metre-long hydraulically
operated steel crest gates, will be built across the 350m wide Marina Channel to
keep out sea water. Under normal conditions, the steel gates will remain closed
to isolate the reservoir from the sea. During heavy rain, the steel gates will
open as necessary to release excess stormwater to the sea when the tide is low.
However, when it is not possible to do so during high tide, the Drainage Pumping
Station capable of pumping up to 280 cubic metres per second will pump out the
excess stormwater into the sea.
CHECK MARINA
BARRAGE CONSTRUCTION INFO
Lesson 2 TBA
Lesson 3 TBA
Lesson 4 TBA
Lesson 5 TBA
Lesson 6
TBA
Lesson 7 TBA
Lesson 8 TBA
Lesson 9 TBA
Lesson 10 TBA
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