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Lake Powell’s shoreline near Antelope Canyon in Page, Arizona. Lake Powell’s water level goes up during the annual snow runoff from May through July and then goes down the rest of the year. Powel’s overall level is dropping because more Colorado River water is being used for water supply and irrigation than is coming in from the mountains. Photo credit: Denver Water.
Lake Powell’s shoreline near Antelope Canyon in Page, Arizona. Lake Powell’s water level goes up during the annual snow runoff from May through July and then goes down the rest of the year. Powel’s overall level is dropping because more Colorado River water is being used for water supply and irrigation than is coming in from the mountains. Photo credit: Denver Water.