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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/1922

Title: Hydrodynamics of the Bot river estuary revisited
Authors: Van Niekerk, L
Van der Merwe, JH
Huizinga, P
Keywords: Bot river estuary
Estuary dimensions
Estuary habit
Estuary water levels
Estuary management
Issue Date: Jan-2005
Publisher: Water Research Commission
Citation: Van Niekerk, L, Van der Merwe, JH and Huizinga, P. 2005. Hydrodynamics of the Bot river estuary revisited. Water SA, vol. 31(1), pp 73-85
Abstract: For the past 20 years management of the Bot/Kleinmond estuarine system in the south-western Cape has been based on the premise that, barring intervention, the estuary was naturally evolving into a freshwater coastal lake. This paper presents evidence, based on a 20-year series of water-level data, updated runoff estimates from the catchments and dimensional data, that, in the absence of anthropogenic influences, the system is not progressing naturally, but artificially, towards becoming a freshwater system. It is concluded that the increasingly closed state of the Bot Estuary in recent years is most likely due to reduction in runoff from its tributaries and premature artificial breaching of the Kleinmond arm of the system. These findings, coupled with the high conservation importance of the Both River Estuary, suggest that the current management plan needs urgent revaluation and that the two estuaries cannot be managed separately.
URI: http://hdl.handle.net/10204/1922
ISSN: 0378-4738
Appears in Collections:Coastal and marine systems
Ecosystems processes & dynamics
General science, engineering & technology

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