Colorado is ramping up an effort to measure water use on the Western Slope, developing rules and standards and rolling out a grant program to help water users pay for diversion measurement devices.

The Colorado River, which feeds Lake Mead, is under unprecedented strain from drought, over-allocation, and climate change. The lake, which is America’s largest reservoir, supplies water to 25 million ...

Fast-rising Yakima River basin reservoirs hold 113% as much water as normal for mid-December, an impressive turnaround from two months ago when the drought-stricken reservoirs were nearly empty. The ...