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The streak nature of the lake gives it a long shoreline
relative to its size, with a circumference of 186 km
(Langlands 1974). The lake gradient is tilted towards
north-west, in accordance with the orientation of the
former main valley, and the water in the lake is held
back by a small band of lava flow near Muko. Water from
the lake escapes through a breach in this lava band in
form of a mini-rapid, and marks the beginning of a river
flowing through the formerly vast and deep Iyamuriro
wetland system into the Ruhuuma and from there
through a narrow valley across the Kabale-Kisoro border
into lake Mutanda in Kisoro District. Because of its great
depth and narrow shores, and due to characteristically
low temperatures of the highland region, the lake
productivity in terms of fish is low.
Lake Bunyonyi, in Kabale District, Western Uganda (2008)
NEMA 2008
95