IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 3: Water and Carbon: Climate Change Impact : Investigating techniques to reduce evaporation from small reservoirs in australia
Investigating techniques to reduce evaporation from small reservoirs in australia
Author : F. Helfer1, C. Lemckert1 and H. Zhang1
Climate change has been posing a great pressure on water resources, particularly in Australia. In South-East Queensland (SEQ), the annual evaporation is expected to rise by about 16 per cent in the next 60 years due to increasing greenhouse gas emissions. As the region relies on a large volume of stored water, the minimisation of evaporation is a key factor in guaranteeing availability of water in the future. This paper analyses the efficiency of some existing techniques in reducing evaporation from small dams within SEQ. The use of suspended covers, destratification systems and windbreaks was investigated using modelling. Of these techniques, suspended covers showed the greatest potential for reducing evaporation (in the order of 88 per cent). The efficiency of windbreaks was around 27 per cent, while the use of destratification system did not change evaporation rates. These results are encouraging, and further research is warranted to determine the cost-effectiveness and environmental impacts of the use of suspended covers and windbreaks to reduce evaporation from small dams.
File Size : 347,289 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 3: Water and Carbon: Climate Change Impact
Date Published : 01/07/2011
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