A new federal program hopes to fill in knowledge gaps on how water moves through the headwaters of arguably the West’s most important drinking and irrigation water source.

The U.S. Geological Survey announced the next location for its Next Generation Water Observing System (NGWOS) will be in the headwaters of the Colorado and Gunnison rivers. It’s the second watershed in the country to be part of the program, after a successful pilot on the Delaware River started last year.