Dam of Koudiat Medouar
Reboa wadi drains all the southern part if the
energy clearing. The spillway can dischargeadebit
basin. Soultez wadi ows from the West to the East
of867 cubic meters per second, which represents a
up to Reboa wadi. Small trees and bushes cover the
ood water of 2256 cubic meter per second.
south and southeast of the basin.
Koudiat Medouar dam has created a reservoir of
Pluviometry varies between 4«00 millimeters at the
69.1 million cubic meters allowing the control of
South and 600 millimeters around the basin where
15 million cubic meter, which meets the water
in the downstream part, it reaches 300 millimeters.
needs of Batna, Chemorah, Khenchla, Arris and
It is in the gorge
of Koudiat Medouar that the dam
‘
the towns crossed by these COITIdŒS
was
built. The dam’s site includes two valleys
This development tits in the complex system of
including that of Reboa wadi which is about one
Béni Haroun. 200 million cubic meters per year are
kilometer wide, where the main dam was built as
transferred to Koudiat» Medouar dam from Béni
an earth dyke with a clayey core.
Haroun dam in order to act as a back up
to new
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needs in addition to Koudiat Medouar dam’s
An IHJGC'ÜOH wall ensures watert1ghtness. At the
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capac1t1es.
left—hand s1de shore, a secondary valley IS fences
with a 25—meter high and one kilometer long dyke
The dam could thus annually control 215 million
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cubic meters that go
to supplying drinking and
The river diver31on during the construction
of the
industrial
water
for
Batna,
Tazoult,
Arris,
dam was done thanks to a 16.5—m
cofferdam
Khenchla, Kaïs and the irrigation of 65000
and a concrete gallery on
the wad1’s bed
at the
hectares of farming lands in the region of Batna—
basis of the right—hand s1de shore. This gallery
Aïn Touta.
was then transformed into a bottom emptymg.
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This dam has effectively taken in charge the needs
The 49.05-m high reception tower includes three
in terms of drinking water supply for the region. lt
water—receiving sections at three different levels.
is
also
a
masterpiece in the transfer and
A pumping station with four centrifugal pumps .
distribution system for Béni Haroun’s hydraulic
forces water back towards Batna and Khenchla
complex.
after treatment.
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Medouar is the perfect example of a coherent and
The ood water discharge at the right—hand side
integrated management of water resources on an
shore is of the free surface spillway type with
entire hydrographical region of the country and
frontalaccess. It is followed by a messenger
and an
WhiCh îS starting t0 bear fl‘Uit.
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