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Report reveals lower in Lake Powell’s complete capability


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Lake Powell, the second-largest human-made reservoir within the US, has misplaced practically 7% of its potential storage capability since 1963, when Glen Canyon Dam was constructed, a brand new report reveals.

In addition to water loss because of an intense multiyear drought, the US Geological Survey and the Bureau of Reclamation report discovered, Lake Powell confronted a mean annual loss in storage capability of about 33,270 acre-feet, or 11 billion gallons, per 12 months between 1963 and 2018.

That’s sufficient water to fill the Reflecting Pool on the National Mall about 1,600 occasions.

The capability of the reservoir is shrinking due to sediments flowing in from the Colorado and San Juan rivers, in accordance with the report. Those sediments settle on the backside of the reservoir and reduce the overall quantity of water the reservoir can maintain.

As of Monday, Lake Powell was round 25% full, in accordance with information from the Bureau of Reclamation.

It’s unhealthy information for a area already going through water shortages and excessive wildfires because of the drought. National Oceanic and Atmospheric Administration drought specialists stated final week these circumstances are anticipated to a minimum of proceed – if not worsen – within the coming months.

Lake Powell is a crucial reservoir within the Colorado River Basin. Both Lake Powell and close by Lake Mead, the nation’s largest reservoir, have drained at an alarming charge. In August, the federal authorities declared a water scarcity on the Colorado River for the primary time after Lake Mead’s water stage plunged to unprecedented lows, triggering necessary water consumption cuts for states within the Southwest that started in January.

And final week, Lake Powell dipped beneath the essential threshold of three,525 toes above sea stage, sparking extra considerations about water provide and hydropower era hundreds of thousands of individuals within the West depend on for electrical energy.

The significance of the dwindling water provide alongside the Colorado can’t be overstated.

The system provides water for greater than 40 million individuals dwelling throughout seven Western states and Mexico. Lakes Powell and Mead present a essential provide of consuming water and irrigation for a lot of throughout the area, together with rural farms, ranches and native communities.

“It is vitally important we have the best-available scientific information like this report to provide a clear understanding of water availability in Lake Powell as we plan for the future,” Tanya Trujillo, assistant secretary for water and science with the US Department of Interior, stated in a press release. “The Colorado River system faces multiple challenges, including the effects of a 22-year-long drought and the increased impacts of climate change.”


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