The full film: Lake Powell is about 28 feet above the level where Glen Canyon Dam's turbines must stop. Below that, four steel pipes at the base of the dam are the only way the Colorado River gets...

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An 80-year-old water treaty has turned drought into a trade fight between the US and Mexico. Under the 1944 agreement, Mexico sends Rio Grande water north while the US sends Colorado River water south. When drought hit, Mexico fell...

The full film: June 1983: Lake Powell kept rising, so Glen Canyon Dam's engineers put four-foot plywood boards on top of the spillway gates to hold back more of the lake. Later they swapped them for eight-foot steel...

The full film: In 1983 Glen Canyon Dam's left spillway started eating itself from the inside. Lake Powell peaked less than seven feet from the top of the dam. Footage: "Challenge at Glen Canyon" (1983–84), U.S. Bureau of Reclamation...

Lake Mead is 2.85 feet above 1,035 feet (USBR, Oct. 1, 2026). At that line, the Bureau of Reclamation says Hoover Dam's older turbines are expected to sustain severe cavitation damage, and the dam's capacity could drop from...

The full film, out Tue, Oct. 6 at 3 PM ET: Part 3 of "Hoover's Red Line." Hoover Dam has 17 main turbines. The Bureau of Reclamation is spending about $52 million, from a fund power customers paid...

The full film, out Tue, Oct. 6 at 3 PM ET: Hurricane Polo became the second most intense hurricane on record in the eastern Pacific (892 mb on Sept. 22, per the National Hurricane Center). Its remnant moisture...

The full film: In 1983 a calcite deposit about a quarter of an inch high set off cavitation inside Glen Canyon Dam's left spillway tunnel and tore holes in the concrete floor. Footage: "Challenge at Glen Canyon" (1983–84), U.S....

The full film: The same stretch of Lake Powell, nine Septembers apart, from NASA's Landsat satellite. Images: NASA Earth Observatory / Landsat (public domain). Data: U.S. Bureau of Reclamation, Sept 2026. Music: YouTube Audio Library. #LakePowell #GlenCanyonDam #ColoradoRiver

In 1983, Glen Canyon Dam's spillways tore themselves apart in a flood, and Lake Powell rose to within seven feet of the top of the dam. In September 2026, the same lake fell to its lowest level since it...

The full film, out Tue, Oct. 6 at 3 PM ET: Part 2 of "Hoover's Red Line." The Bureau of Reclamation says Hoover Dam's older turbines are expected to sustain severe cavitation damage below a Lake Mead elevation...

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The full film: Reclamation's own table of how much water Glen Canyon Dam's last four pipes may carry as Lake Powell falls. Source: USBR Technical Decision Memorandum, March 26, 2024 (Table 1); lake level: USBR daily data. Footage: National...