Detailed text transcripts for TV channel - FOXNEWS - 20150820:08:25:00
The water supply for seven out of every ten people that live in the state of nevada. so we need to know that we have secure access. >> reporter: so 600 feet below ground, and three miles along a dark narrow tunnel beneath lake mead, engineers have found a solution, seven years in the making, at a cost of $817 million. >> each and every time i come down with shock and awe. it is truly an impressive sight. >> reporter: this is the end of the tunnel and this is the critical point. up above us, 40 feet, is the hemisphere cal cap. think of it as a giant bath plug. above that the waters of lake mead...
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