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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/571

Title: How do we know how much groundwater is stored in south-western Cape mountains?
Authors: Midgley, JJ
Scott, DF
Harris, C
Keywords: Water isotopes
Groundwater reservoir
Streamflow
South-western Cape mountains
Issue Date: Jul-2001
Publisher: Bureau of Scientific Publishers
Citation: Midgley, JJ, Scott, DF and Harris, C. 2001. How do we know how much groundwater is stored in south-western Cape mountains? South African Journal of Science, vol. 97, 08 July, pp 285-286
Abstract: Isotopes of water (D, O-18) in rain and streams were used to obtain an estimate of the amount of ground water in the south-western Cape Mountains. It was assumed that the groundwater reservoir is well-mixed and that the water isotope signals in local streams are the same as those of groundwater. Analysis suggests that reservoir volume can be several times that of local rainfall minus local streamflow and up to 2-3 times that of local rainfall. This in turn suggests considerable residence times of water to allow this quality of water to accumulate. This has implications for hydrology as well as for understanding the influence of vegetation on streamflow.
Description: Copyright: 2001 Bureau for Scientific Publishers
URI: http://hdl.handle.net/10204/571
ISSN: 0038-2353
Appears in Collections:Water resources and human health
General science, engineering & technology

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