Assessing the Potential for Rainwater Harvesting

Rainwater harvesting is one of the promising ways of supplementing the surface and underground scarce water resources in areas where existing water supply system is inadequate to meet demand. Rainwater harvesting is one of the measure for reducing impact of climate change on water supplies. Abeokuta...

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Bibliographic Details
Published in:Water resources management 2010-08, Vol.24 (10), p.2129-2137
Main Authors: Aladenola, Olanike Olowoiya, Adeboye, Omotayo B
Format: Article
Language:English
Subjects:
Annual variations
Atmospheric Sciences
Civil Engineering
Climate change
Consumption
Developing countries
Domestic use
Drinking water
Earth and Environmental Science
Earth Sciences
Earth, ocean, space
Environment
Environmental impact
Exact sciences and technology
Flushing
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Hydrology. Hydrogeology
Hydrology/Water Resources
LDCs
Population
Rain
Rainwater harvesting
Runoff
Rural areas
Rural development
Studies
Water conveyance
Water demand
Water harvesting
Water resources
Water resources management
Water savings
Water scarcity
Water supply
Water supply engineering
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Summary:Rainwater harvesting is one of the promising ways of supplementing the surface and underground scarce water resources in areas where existing water supply system is inadequate to meet demand. Rainwater harvesting is one of the measure for reducing impact of climate change on water supplies. Abeokuta has a mean annual rainfall of 1,156 mm which makes rainwater harvesting ideal. Intra annual variability lies betwen 0.7 and 1.0 while the inter annual variability was 0.2. Annually 74.0 m³ of rainwater can be harvested per household. Estimated annual water demand for flushing, laundry and flushing were 21.6 and 29.4 m³ respectively. Harvested rainwater in Abeokuta can satisfy household monthly water demand for WC flushing and laundry except for November, December, January and February. The excess rainwater stored in September and October is sufficient to supplement the short fall in the dry months provided there is adequate storage.Water savings potential is highest in June and September which is the two rainfall peak period in Southwest Nigeria.
ISSN:0920-4741
1573-1650
DOI:10.1007/s11269-009-9542-y