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Runl'ra Ri',)er (FiSure 5)
This river has three distinct strata. Between Lake Rukwa and the Rungwa falls it is a wide
meandering sandy river. For approximately 65 km upstream of Rungwa falls it is a moderately
*ia" .iu"."no*ing uu"r sand ind rock bars. The banks are lightly wooded Upstream of this
poin, i t,""o.", i u".y n"r.o* and sinuous channel with an extensive tree overbang' which
'made
sighting ctocodiles difticult. There was a low overall crocodile density (0 46
crocodile's/krnj with lower densities being lound in the upstieam strata (021 crocodiles/km)'
The downstream strata between the talls and the constricted channel had a higher density (0 8?
crocodiles/km).
Kavuu River (Fiqurc 5)
This is a very sinuous and small river with a moderate vegetation oveLhang which is fed from
Lake Chada ;nd the surrounding ttoodplains. There were people and livestock all the way liom
the Katavi National Park boundary to Lake Rrkwa but there was also a surprising amount ot
wildlife. Crocodile density was low and estimated to be 0.03 crocodiles/km'
Lake Chada (FiSure 5)
Lake Chada is a large floodplain area within the Katavi Plains National Park when surveyed
there were an esti;ated 1i km of channels and pools which were tull of hippopotami
Crocodile density was estimated to be I 121 crocodiles/km.
Tabora/Kigoma Region - Ugalh Game Reserve
Ugalhl Ri',/er (FiSure 6)
The upstream section of this river is a series of deep pools These eventually coalesce into a
single channel flowing through a broad floodplain After reaching the Mpande railway bridge
thJriver flows into a seties of swamp areas which culminate near Lake Sagara Crocodile
densities in these two sections was estimated to be 0.31 crocodiles/km Downstream ofLake
Sagara it flows through a single channel beforejoining the Malagarasi. Crccodile densities were
estimated to be 2.38 crocodiles/km in this section. The average density tbr the Ugalla was
estimated to be 0.67 crocodiles/km.
Malagansi Rirer (FiSure 6)
The Malagarasi rivet can be clivided into five strata, two of which were not surveyed- ln the
uDstream iection it is confined to a single meandering channel. Crocodile densities wele
initially tow (0.17 crocodiles/krn) but increased as it approached the papyrus swaDrp (1 16
crocodiles/km) neat Lake Nyamagomo The papyrus swamp was not surveyed On emerging
from the swamp it flows through a single steep-sided channel to the Ugalla junction The
average estimatedensity here was low (0 84 crocodiles/km) but most ot'these were lbund in
a very short section near the Ugalla junction where the density was estimated to he 5 75
crocodiles/km. Between the Ugalla junction and Uvinza the river flowed over rocks and
through a wide braided channel system. Crocodile densities were low (0 18 crocodiles/km) in
this s;ction. Shortly after Uvinza the river flows thlough a series of spectacular gorges which
were not surveyed. No crocodiles were counted in the final 30 km of river between the end of
the gorges and the delta on Lake Tanganyika. The whole of this section is densely populated