Collection of runoff in urbanized catchments for augmenting storage in conventional water impoundment schemes
Limited land and competing demands for its use from an ever-increasing industrial sector has led to the maximization of land utilization in Singapore. Currently almost half the land area of 631 squares kilometers is being used as water catchment. This includes some urbanized areas where there is intense high-rise buildings, light industries and paved areas. The main ojectives of this paper are to highlight the water abstraction systems existing in one of the projects where urban storm runoffs are divertes to storage ponds after which the water is pumped/gravited to the impounding reservoir which receives surface runoff from less urbanized areas. The waters entering these ponds are closely monitored and seasons ensure that only quality levels that are acceptable are directed to the storage ponds followed by selective onward transmission. These collection systems, which have been in existence from 1985, are operating quite successfully. Special systems were designed to prevent the ingress of rubbish and to accentuate sedimentation. The quality of the raw water obtained is comparable to that from a conventional protected catchment. It can be concluded that, with proper management including improved water quality monitoring systems, urban storm runoff can be sucessfully collected and stored as a raw water that can be transferred to an impounding reservoir to augment the storage volume. (MV)
| Main Authors: | , , , , |
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| Format: | Texto biblioteca |
| Language: | spa |
| Published: |
México, D.F. (México)
1997
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| Subjects: | SINGAPUR, UTILIZACION DE LA TIERRA, USO DEL AGUA, CAPTACION DE AGUAS, CALIDAD DEL AGUA, AGRICULTURA, |
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