Since the 3rd March 2002, there has been a co-operative monitoring initative on Zandvlei. This involves members of the community, who, on a voluntary basis, undertake weekly monitoring of salinity levels at a number of locations around Zandvlei for the City of Cape Town's Scientific Services department, which receives and collates the data into a database.
The information generated from this programme is valuable and is used to assist with management of this waterbody. Due to its location in an urban environment, management activities must cater for the needs of both the recreational users of Zandvlei and the ecological requirements of the ecosystem itself. thus maintaining ggod waterlevels for the human users(mouth closed) must be co-ordinated with the need to periodically open the mouth of the waterbody to ensure flushing and to allow pulses of saltwater in. Opening the mouth tends to be done mechanically and generally coincides with spring tides.
Health of the Estuary
Some results of this
monitoring programme are presented in the table below, 3 sample
monitoring stations only, between March 2002 and March 2003.