The foothill Feeder Project of the Metropolitan Water District of
Southern California incorporates a long tunnel that will be part of the
system which will supply water to a large area in Southern California including
metropolitan Los Angeles. In this system head control devices are
needed to regulate the discharge through the tunnels and the appurtenant
structures and for this purpose gated structures open to the atmosphere were
chosen which also provided an access for machinery needed for the tunnel
maintenance. The gate structures, circular in plan, with the necessary
emergency overflow weirs were made large enough so that the machinery access
into the tunnel for maintenance could be incorporated in the structure. The
circular plan also provided certain structural advantages. The research
described in this report was carried out to study in detail the hydraulic
characteristics of these gated structures for a wide variety of possible flow
Anderson, Alvin G.; Anderson, David J; Kuha, Roy M..
Model Studies - Foothill Feeder Project Metropolitan Water District Of Southern California Part I. Regular Gate Structure.
St. Anthony Falls Laboratory.
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