USA, California, hydroslim dam of Monticello, "Glory Hole"
Lake Berryessa is the largest lake in NAPA, California . The reservoir formed by the Monticello dam , which provides water and hydroelectricity to the North Bay the Bay Area of San Francisco .
The lake was named after the first European settlers in the Berryessa valley, josé jesús and Sexto "Sisto" Berrelleza (who settled in Rancho Las Putas in 1843.
Prior to its inundation, the valley was an agricultural region, whose soils are considered to be among the best in the country. The main town in the valley, Monticello , was abandoned in order to construct a reservoir.
The famous Monticello dam on lake Berryessa, more known for its unique hydroslim. This type hydroslide is a giant concrete pipe, into which the water flows in case of rising water in the lake. Hydroslim the dam of Monticello is also known as "Glory Hole". Hole this hole is approximately 60 metres from the dam. The water begins to flow in the pipe when the volume of the lake is about 2 million cubic meters of water. The pipe is in the form of a cone: the inlet diameter is 21.6 m, tapering down to 8.4 meters. The depth of the crater is 21 meters. One second drain skips through more than 1370 cubic meters of water. For obvious reasons, swimming near the "hole of fame" is prohibited. At some distance from hydroslide across the entire width of the lake are special buoys restricting access for boaters and swimmers to the dangerous area. In addition, the "glory hole" is securely fenced off from the shore, near which it is located. During the dry summer months when the water level in the lake and Berryessa significantly below the entrance hole the "hole of fame", some skateboarders, skaters and bicyclists use the other horizontal output hydroslide as a pipe for their workouts. These guys are desperate to get to this pipe by swimming or on special rafts.