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The Mzamba estuary
(31°6' S;
30°10' E)
is situated on the Transkei coast of the Eastern Cape, just south of Port Edward near the KwaZulu-Natal/Eastern Cape provincial border. This system drains a catchment area of approximately 505 sq. km. About 50% of the Mzamba catchment was under agriculture and most of this comprised subsistence farming with some commercial forestry and sugar cane also present. Approximately 22% of the catchment consisted of degraded grassland with only 28% natural. This comprised mainly grassland and bushland with some forest also present. Very little (less than 1%) of the catchment land-cover was urban and most of this was (rural) residential.
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