Lake Mead Hits Lowest Level On Record Amid Decade-Long Western Drought Lake Mead, the nation’s largest reservoir by storage capacity, has fallen to its lowest level on record as a drought throughout western states continues. Bureau of Reclamation data indicate that the reservoir’s surface elevation rose to 1,040.50 feet above sea level on Thursday, below the previous low of 1,040.58 feet set in July 2022 , when the lake first fell to a low following years of drought. Hoover Dam forms Lake Mead a