oa Madoqua - The lower Orange River
|Article Title||The lower Orange River|
|© Publisher:||Namibian Ministry of Environment and Tourism|
|Affiliations||1 Fresh Water Fish Industries, Mariental, Namibia|
|Publication Date||Jan 1991|
|Pages||155 - 157|
|Keyword(s)||Augrabies Falls, Biotic factors, Breeding colony, Irrigation areas, Orange-Vaal confluence, Semi-aquatic macrophyte encroachment, Spawning migration, Vegetation, White Pelicans and Wildlife|
The total catchment area of the Orange River is approximately 852 000 km2 (47% of the totaI surface area of South Africa) and is the largest regulated river system in South Africa. Due to man's interference with this river system, remarkable changes in its ecology have taken place.
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