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3:46 So let’s do some history first. When did hydrologists first start warning people that the Colorado River didn’t have as much water as they wanted it to have? This goes all the way back to the early 20th century when we were first planning dams and canals for the farms and the cities, and there were hydrologists who warned that the Colorado River was subject to some really deep droughts that could last a long time. The work was generally ignored in favor of more optimistic estimates that allowed us to build bigger dams and bigger cities and larger farming communities. The science was inconvenient, so it was shoved aside, as we have often seen happen with the history of water in the Western United States.

United statesJohn fleckMelissa sevignyLake mead national recreation areaCredit national park serviceUniversity of new mexico water resources programNew mexicoWater resources programColorado riverNational park serviceLake mead national recreationWestern unitedLake powellLake meadNative americanColorado river