Lake Mead is a water lifeline for Southern California and much of the west, but now it’s facing its first water shortage in its 85-year history.

The lake along the Nevada-Arizona border is one of the largest engineered lakes in the world, and it’s drying up at an alarming rate.

L.A. Times national correspondent Jaweed Kaleem talked about what this means for millions of people and millions of acres of farmland across the west.