The Glory Hole of Monticello Dam in California
The Glory Hole is a spillway in Monticello Dam in California. It is
technically known as the Morning Glory Spillway. However, it is locally
known as The Glory Hole. The Glory Hole of Monticello Dam is the largest
morning glory spillway all over the world.
It is a classic, uncontrolled spillway and is 72 feet wide at the intake. The spillway narrows to 28 feet at the spout below the dam. The Glory Hole is around 700 feet from its entry to exit. The main purpose of the Glory Hole, the funnel-shaped outlet, is to allow water to bypass the dam when it reaches capacity.
The spillway swallows water at a rate of 48,800 cubic feet per second through an enormous concrete pipe. It is designed to handle a maximum of 362,000 gallons of water per second in a rather curved manner going straight down, twisting a little, then spitting out.
Monticello Dam was constructed between 1953 and 1957 in Napa County in California. It is a medium concrete-arch dam with a structural height of 304 feet and a crest length of 1,023 feet. It contains 326,000 cubic yards (249,000 m³) of concrete. The capacity of the reservoir is 1,602,000 acre·feet.
It is a classic, uncontrolled spillway and is 72 feet wide at the intake. The spillway narrows to 28 feet at the spout below the dam. The Glory Hole is around 700 feet from its entry to exit. The main purpose of the Glory Hole, the funnel-shaped outlet, is to allow water to bypass the dam when it reaches capacity.
The spillway swallows water at a rate of 48,800 cubic feet per second through an enormous concrete pipe. It is designed to handle a maximum of 362,000 gallons of water per second in a rather curved manner going straight down, twisting a little, then spitting out.
Monticello Dam was constructed between 1953 and 1957 in Napa County in California. It is a medium concrete-arch dam with a structural height of 304 feet and a crest length of 1,023 feet. It contains 326,000 cubic yards (249,000 m³) of concrete. The capacity of the reservoir is 1,602,000 acre·feet.
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