Ilandutwa Village is located in the Southern Highlands of Tanzania with land falling gradually to Ruaha River and Makembe stream. The characteristic features surrounding Ilandutwa are hills; the remnant soft he old denudated plateaus which have resisted weathering and erosion. The land relatively slopes towards the Ruaha Riverand the catchment is covered with natural vegetation of short Savannah grass with scattered bushes and trees. Physiographic features of Iringa Region are such that a great part of Ruaha River and stream catchments across the Region-Company Location.
The lowest
reduced level of natural ground at Ilandutwa
is 1,774
meters above sea level. The
elevation
rises gradually
up stream of
the
proposed dam site to as stretch
of 3km where elevation
is 1,835
meters above sea level. The catchments lie in the warm and temperature
climate. The summers have rainfall, while the winters have very little
rainfall. Generally, the average annual Temperature is 19.1℃. The annual
average rainfall is 690mm.