الفهرس 
REVIEW OF LITERATUREOnly 14 pages are availabe for public view
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Abstract
Weirs are robust structures capable of handling
quite large discharges. Generally, the primary function
of weirs is the control of water level for the purpose
of irrigation, navigation, flood protection or Y”educing
of bed gradient of a river.
Therefore, the discharge capacity of weirs has
been the subject of a great number of experimental and
theoretical investigations, and the known head-discharge
relationship was obtained. This classical relation depends
mainly on the effective head over crest, the length of
crest and the coefficient of discharge.
Owing to the need of increasing the discharges
passing in existing channels which will serve the new
extended agricultural area at the end of these channels,
the author tries to solve this practical problem by
utilizing the available heads downstream regulators.
The solution of this problem was found by means of
(j.ncreasingthe length of crest by making it inclined,