Keurbooms River

The Keurbooms River (Afrikaans: Keurboomsrivier) is a river in the Western Cape Province in South Africa. The river has its sources south of Uniondale in the Langkloof and flows in a roughly southeastern direction. It passes De Vlugt and the Prince Alfred Pass, flowing along the northern side of the R340 road then it turns south. After crossing the N2 road, it flows into the Indian Ocean through the Keurbooms Estuary, located close to the coastal town of Plettenberg Bay.[1]

This article is about the river. For the settlement, see Keurboomstrand.
Keurbooms River
Keurboomsrivier
Lodge and trout farm on the Keurbooms River, as seen from the R339 road
Location of the Keurbooms River mouth
EtymologyAfter the keurboom trees (genus Virgilia in Afrikaans)
Location
CountrySouth Africa
ProvinceWestern Cape Province
Physical characteristics
SourceSpitskop
 • locationOuteniqua Mountains
 • elevation1,000 m (3,300 ft)
MouthIndian Ocean
 • location
Near Plettenberg Bay
 • coordinates
34°01′37″S 23°23′42″E
 • elevation
0 m (0 ft)
Length85 km (53 mi)
Basin size1,080 km2 (420 sq mi)

The Keurbooms River is approximately 85 km long with a catchment area of 1,080 km2. Its main tributary is the Bitou (Bietou).[2]

View from the Keurbooms River estuary near Plettenberg Bay

Ecology

The Keurbooms River marks the eastern limit of the area inhabited by the Cape galaxias (Galaxias zebratus), a South African fish species endemic to the Cape Floristic Region. It shares the same habitat as imported trouts and lives in an area between the Keurbooms and the Olifants River.[3] Although in South Africa this relatively delicate fish is only classified as near threatened, in Australia species of the same genus were driven to extinction by competing salmonids.[4]

gollark: Ah, so if two adjacent things are the same and both extrema it wants the midpoint?
gollark: If they mean approximately the same things as in the calculus I did, then if the gradient was positive/negative on one side and the same sign on the other it would not be a maximum/minimum but just an inflection point. But if the gradient changes sign, then it can be, and this probably requires a different value to on either side. But I don't really get what they're saying either.
gollark: I think to be a valid maximum/minimum it has to be >/< but *not* equal?
gollark: This is quite complicated. I may need a while.
gollark: I "can" read it "for" you?

See also

References
  1. "Keurbooms River – Hydrology and geohydrology". Archived from the original on 2014-08-08. Retrieved 2012-03-27.
  2. Gouritz WMA 16
  3. "Biodiversity, Alien trout, and the So what attitude"
  4. Albany Museum – Freshwater Ichthyology
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