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A siphon spillway in a dam is usually not technically a siphon, as it is generally used to drain elevated water levels. [34] However, a siphon spillway operates as an actual siphon if it raises the flow higher than the surface of the source reservoir, as sometimes is the case when used in irrigation.
A siphon spillway uses the difference in height between the intake and the outlet to create the pressure difference required to remove excess water. Siphons require priming to remove air in the bend for them to function, and most siphon spillways are designed to use water to automatically prime the siphon.
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With minor external modifications to the exiting reversible hydro turbine unit, most of the dead storage water can be put to use during the drought years by using the hydro power plant for pumping water into the nearby right canal. Water would be released downstream into the tail pond over the spillway (if needed by siphon pipes). Nearly five ...
Side view cut-away diagram of the radial arm of the Tainter gate, Ice Harbor Dam, Snake River, Pasco, Washington (USACE) Tainter gate from the back, or spillway, on the John H. Kerr Dam, Boydton, Virginia (USACE) Tainter gate being constructed, in 1936, on the upper Mississippi River, Lock and Dam No. 7 (Onalaska Dam), La Crescent, Minnesota (USACE) Stevenson Dam Tainter Gate on the Housatonic ...
A perforated disc (4) covered by a flexible plate or flap (5) is joined by the siphon rod (6) to the flush lever. Pressing the lever raises the plate, forces water over the top of the siphon into the vertical pipe, and starts the siphonic discharge. Water flows past the flap until the cistern is empty, air enters the siphon and the flush stops.
Tainter gate diagram: Tainter gates and spillway: Drum gates are hollow gate sections that float on water. They are pinned to rotate up or down. Water is allowed into or out of the flotation chamber to adjust the dam's crest height. Drum gates are controlled with valves. Drum gates on a diversion dam
English: This image illustrates back siphoning, a form of backflow. With a water system configured like this, instead of water flowing from the loft tank into the outside pool, water from the outside pool will siphon into the loft tank.