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EERSTE RIVER ESTUARY: Catchment Characteristics

Main Rivers and tributaries

The main river is the relatively short (40km) Eerste River  The Eerste River’s major tributary is the Kuils River, which is approximately 30 km long before it joins the Eerste River, approximately 4 km from its mouth.  Other minor tributaries of the Eerste River are the Blouklip, Bonte, Jonkershoek, Klippies, Krom, Plankenburg, Sanddrif and Veldwagters Rivers.

Dams

River run-off
Geomorphology

Refer to Ref.1., the sediments in the mouth area of the Eerste River estuary can be divided into 3 zones:

  • Fine sand occurred at the relatively flat foreshore (Ref. 2).

  • Coarse sand on a relatively steep intertidal beach face.

  • Medium sand in the lagoon area, overlain with grey muds at the bottom of the lagoon.
Geology

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