| Fish River (Namibia) | |
| Map: | Fish River Basin OSM.png |
| Subdivision Type1: | Country |
| Subdivision Name1: | Namibia |
| Length: | 650km (400miles) |
| Source1 Location: | Near Mariental |
| Mouth: | Orange River |
The Fish River (Visrivier in Afrikaans, Fischfluss in German) is a river in Namibia. It is 650 km long, flowing from the Naukluft Mountains[1] 150 km to the Hardap Dam near Mariental. From there the flow is entirely blocked,[1] all further flow downstream coming from tributaries downstream from the dam. The flow of the river is seasonal; in winter the river can dry up completely. Despite this, the river is the site of the spectacular Fish River Canyon, a canyon 160 km long, and at points as much as 550 m deep.
The outflow of the Fish River joins the Orange River at the border with South Africa about 100 km from the Atlantic Ocean.