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Hoover Dam: American Experience (1999) Venture into the Southwestern desert and learn the complete story of one of the seven engineering wonders of the world -- the Hoover Dam. See incredible footage that documents every step of the monumental work of taming the Colorado River to provide water and power to California, Nevada and Arizona. It's the story of the ingenuity and manpower that literally moved a river and sculpted a mountain of concrete.

Hoover Dam: American Experience (1999) Venture into the Southwestern desert and learn the complete story of one of the seven engineering wonders of the world -- the Hoover Dam. See incredible footage that documents every step of the monumental work of taming the Colorado River to provide water and power to California, Nevada and Arizona. It's the story of the ingenuity and manpower that literally moved a river and sculpted a mountain of concrete.

Bottomless Pit - Monticello Dam Drain Hole.    This is not a natural phenomenon, but still extraordinary. Glory holes are used for dam's to drain excess water during dry seasons. This is the largest one of them all in the world, it is located in Lake Berryessa, Napa County, California. It is used very rarely, but it is quite the sight to see it being put to use.

Bottomless Pit - Monticello Dam Drain Hole. This is not a natural phenomenon, but still extraordinary. Glory holes are used for dam's to drain excess water during dry seasons. This is the largest one of them all in the world, it is located in Lake Berryessa, Napa County, California. It is used very rarely, but it is quite the sight to see it being put to use.

Everyday I find myself wasting time researching about different things I had previously known nothing about, today it's spillways. Specifically bell-mouth spillways. A lovely bypass for water to drain through so that it does not damage the surrounding dam(s).

Everyday I find myself wasting time researching about different things I had previously known nothing about, today it's spillways. Specifically bell-mouth spillways. A lovely bypass for water to drain through so that it does not damage the surrounding dam(s).

HOOVER DAM, USA - A reminder to myself that as much as I love to travel the world there are some pretty amazing places to see in my own country!

Hoover Dam, USA - Photo of the Day

HOOVER DAM, USA - A reminder to myself that as much as I love to travel the world there are some pretty amazing places to see in my own country!

2/7 – Monticello Dam Drain Hole Glory holes are used for dam’s to drain excess water during dry seasons. This is the largest one of them all in the world, it is located in Lake Berryessa. It is used very rarely, but it is quite the sight to see it being put to use. Located in Napa County, California, USA this glory hole was constructed between 1953 and 1957. The hole diameter is 72ft (22m) wide whilst the critical drop is 280ft (86m)

2/7 – Monticello Dam Drain Hole Glory holes are used for dam’s to drain excess water during dry seasons. This is the largest one of them all in the world, it is located in Lake Berryessa. It is used very rarely, but it is quite the sight to see it being put to use. Located in Napa County, California, USA this glory hole was constructed between 1953 and 1957. The hole diameter is 72ft (22m) wide whilst the critical drop is 280ft (86m)

4/7 – Monticello Dam Drain Hole Glory holes are used for dam’s to drain excess water during dry seasons. This is the largest one of them all in the world, it is located in Lake Berryessa. It is used very rarely, but it is quite the sight to see it being put to use. Located in Napa County, California, USA this glory hole was constructed between 1953 and 1957. The hole diameter is 72ft (22m) wide whilst the critical drop is 280ft (86m)

4/7 – Monticello Dam Drain Hole Glory holes are used for dam’s to drain excess water during dry seasons. This is the largest one of them all in the world, it is located in Lake Berryessa. It is used very rarely, but it is quite the sight to see it being put to use. Located in Napa County, California, USA this glory hole was constructed between 1953 and 1957. The hole diameter is 72ft (22m) wide whilst the critical drop is 280ft (86m)

Another California Dam Grapples With Flood Danger

Another California Dam Grapples With Flood Danger

Water releases to resume at damaged California dam spillway

Water releases to resume at damaged California dam spillway

"In it's Glory!!" California  Napa County  Monticello Dam Morning Glory Spillway.   Located at the Monticello Dam at Lake Berryessa in Northern California, this gigantic drain acts as the lake's spillway. When the dam reaches capacity, the spillway swallows water at a rate of 48,800 cubic feet per second, emptying about 700 feet away through an enormous concrete pipe.

"In it's Glory!!" California Napa County Monticello Dam Morning Glory Spillway. Located at the Monticello Dam at Lake Berryessa in Northern California, this gigantic drain acts as the lake's spillway. When the dam reaches capacity, the spillway swallows water at a rate of 48,800 cubic feet per second, emptying about 700 feet away through an enormous concrete pipe.

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