Modder River pontoon bridge, 1899
|Name origin: Modder meaning 'mud' in Afrikaans|
|Regions||Free State, Northern Cape|
|- elevation||1,114 m (3,655 ft)|
The Modder River is a river in South Africa. It is a tributary of the Riet River that forms part of the border between the Northern Cape and the Free State provinces. The river's banks were the scenes of heavy fighting in the beginning of the Second Boer War at the Battle of Modder River.
There is an inhabited farming place named 'Modder River' just north of the confluence between this river and the Riet.
Media related to Modder River at Wikimedia Commons
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