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. 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. The gate structures, circular in plan
with the necessary emergency overflow weirs, were made large enough so that
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 for a wide variety of flow conditions for one of
these structures, the Big Tujunga Gate and Spillway Structure.
Anderson, Alvin G.; Anderson, David J..
Model Studies - Foothill Feeder Project Metropolitan Water District Of Southern California Part II. Big Tujunga Gate And Spillway Structure.
St. Anthony Falls Hydraulic Laboratory.
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