Federal officials have declared a shortage in Lake Mead, the largest reservoir in the country that serves tens of millions of residents in the West and northern Mexico, amid a historic decades long  “megadrought” in the region.

The Bureau of Reclamation announced the first-ever water shortage for the lower Colorado River basin on Monday, which will prompt a reduction in water releases to Arizona, Nevada and Mexico in 2022 to make sure there is enough water in the reservoir to keep generating power and provide water for essential uses.

 

Read more from Stephanie Ebbs and Julia Jacobo with ABC News here.