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| Topic | Lake Mead - 1983 vs 2021... wtf we are so screwed. |
| __aCEr__ 07/02/22 9:35:30 PM #43: | Each spillway has four steel drum gates, each 100 feet long and 16 feet high. These gates can't stop the water going into the spillway, but they do allow an additional 16 feet of water to be stored in the reservoir. Each gate weighs approximately 5,000,000 pounds. Automatic control with optional manual operation is provided for raising and lowering the gates. When in raised position a gate may be held continuously in that position by the pressure of water against its bottom, until the water surface of the reservoir rises above a fixed point, when by action of a float the gate is automatically lowered. As the flood peak decreases, the gate can be operated manually so as to gradually empty the flood control portion of the reservoir without creation of flood conditions down stream. The spillways have been used twice. The first time, in 1941, was a test of the system. The second time, in 1983, was for a flood. --- See you next Wednesday. ... Copied to Clipboard! |
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