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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| Using hydraulic and chemical data to determine groundwater contribution to the broken river, victoria |
| Author : |
J.F. Costelloe1, G. Sites2, J. Moreau2 and A.W. Western1 |
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Understanding the contribution of groundwater to flows in lowland rivers is critical for the sustainable management of water resources. As part of a large research project (‘Farms, Rivers, Markets’) into optimising water resource and environmental benefits at the catchment scale, we use a range of hydraulic gradient and chemical data to identify the degree of groundwater interaction in the Broken River of north-eastern Victoria. Investigation of hydraulic gradients between river levels and unconfined groundwater in monitoring bores has identified gaining, losing and flow varying reaches of the Broken River. Further investigation of ionic and isotopic composition of surface water and groundwater shows that below the main storage reservoir (Lake Nillahcootie), groundwater discharge during low flow is minor despite favourable hydraulic gradients. In flow varying reaches, discharge of moderately saline regional groundwater into the river is very limited and a lens of fresh groundwater occurs close to the river channel.
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| File Size : |
926,788 bytes |
| File Type : |
Adobe Acrobat Document |
| Chapter : |
IAHR World Congress Proceedings
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| Category : |
34th Congress - Brisbane (2011)
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| Article : |
THEME 3: Water and Carbon: Climate Change Impact
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| Date Published : |
01/07/2011 |
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