The Klein Brak River is a small, tidal estuary situated on the Garden Route coastline a few kilometers east of Mossel Bay. It is characterized by its relatively short length and modest size, with its source being shallow and dammed by upstream farmers. The river widens as it flows south, reaching approximately 100 meters at its widest point near the mouth. The estuary is generally safe for small boats, with gentle tidal currents rather than heavy flows. Water depth varies significantly with the tide, averaging around one meter for a stretch downstream from the Riverside campsite, with deeper channels present. The system is influenced by the meeting of the Klein Brak and Black Rivers, creating productive prawn banks and sand flats. The surrounding area features a mix of private property, public access points, and popular vacation rentals, making it a accessible yet sometimes crowded destination for inshore angling.