For the second time in six months, an unexpected intrusion of water and mud has stalled the $447-million construction of a third water intake at Lake Mead near Hoover Dam in southern Nevada. The problem could delay project completion at the drought-ravaged lake by a year and increase costs by “tens of millions,” says a project official. Photo: Courtesy of SNWA Water intake construction project at Lake Mead could face delays and higher costs because of unexpected water and mud 600 ft below ground. + Image The new intake is intended to draw water deeper from the dwindling lake that
The 2016 Summer Olympics boating and swimming events have put an international spotlight on what has been a long-running problem in Rio de Janeiro—untreated sewage and trash are clogging up major bays and waterways.