The largest drain hole in the worldLocated in northern California, the Monticello Dam’s is the largest morning glory spillway all over the world. This funnel-shaped outlet, allows water to bypass the dam when it reaches capacity, as it swallows a rate of 48,400 cubic feet per second (1370 m³/s). The distance from the funnel to the exit point - which is situated in the south side of the canyon - is about 700 feet. This type of spill
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