The risks of water shortages continue to grow along the Colorado River, which supplies about 40 million people from Wyoming to Arizona.

Federal water managers released projections Tuesday showing higher odds of shortages occurring within the next five years.

The Colorado River is in the 21st year of a severe drought that’s being compounded by hotter temperatures influenced by climate change, and the river’s flows have increasingly been insufficient to meet all the demands of cities and farms across the region.