Consumption of Colorado River water is outpacing nature’s ability to replenish it, with the basin’s reservoirs on the verge of being depleted to the point of exhaustion without urgent federal action to cut use, according to a new analysis from leading experts of the river. The analysis, published Thursday, found that if the river’s water continues to be used at the same rate and the Southwest sees another winter as dry as the last one, Lakes Mead and Powell—the nation’s two largest reservoirs—would collectively hold 9 percent of the water they can store by the end of next summer.

Other Colorado River Basin news:

• KLAS (Las Vegas, Nev.): Study looks at ‘realistically available’ water in Lake Mead, Lake Powell a year from now