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The Mtamvuna estuary
(31°4' S;
30°12' E)
is situated just south of the coastal town of Port Edward at the KwaZulu-Natal/Eastern Cape provincial border. The river is approximately 162 km long with a catchment area of 1 553 sq. km. Agriculture accounted for approximately 29% of the land-cover in the Mtamvuna catchment. Most of this was subsistence farming and commercial forestry, with some sugar cane also present. About 27% of the catchment was degraded grassland while approximately 43% was natural. Natural land-cover comprised grassland, thicket and bushland, and forest. Urban development, mainly residential and smallholdings accounted for approximately 1% of the catchment land-cover.
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