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South Island National Park

South Island measures 11 x 4.5 km. 98% of the lake's water comes from Ethiopia via the Omo River, and most of the rest from two southern tributaries, the Kerio and the Turkwel, which is being dammed. There is no outflow and with reduced inflows and high evaporation the chloro-carbonate alkaline water is subject to marked 3 - 4 meter seasonal fluctuations in level and is becoming increasingly saline though it is drinkable.

crocodile (Picture: Michael Nikolai)
crocodile (Picture: Michael Nikolai)
The muddy bays of South Island have extensive submerged beds of Potamogeton pectinatus which shelter spawning fish. On South Island 220,000 water birds of 84 species have been recorded with 34 Palaearctic migrants..

South Island Park is in the centre of land inhabited by the El-Molo tribe of fishermen, whose numbers recovering but are still only 500 individuals.

South Island Park in particular has been identified as an Important Bird Area and a priority site for biodiversity conservation. Population counts in 1992 recorded over 220,000 water birds. The establishment of protected areas around Lake Turkana which includes an adjacent Biosphere Reserve (Mount Kulal) extending over the waters of the lake provides an extensive and valuable conservation network.