Western states chart diverging paths as water shortages loom

This Aug. 21, 2019 image shows Glen Canyon Dam near Page, Arizona, holding back Lake Powell. A plan by Utah could open the door to the state pursuing an expensive pipeline that critics say could further deplete the lake, which is a key indicator of the Colorado River's health. (AP Photo/Susan Montoya Bryan)

FILE - This March 26, 2019, file photo, shows a bathtub ring of light minerals showing the high water mark of the reservoir which has shrunk to its lowest point on the Colorado River, as seen from the Hoover Dam, Ariz. As persistent drought and climate change threaten the Colorado River, several states that rely on the water acknowledge that they likely won't get what they were promised a century ago. (AP Photo/Richard Vogel,File)

FILE - This March 23, 2012, file photo, shows pipes extending into Lake Mead well above the high water mark near Boulder City, Nev. A plan by Utah could open the door to the state pursuing an expensive pipeline that critics say could further deplete the lake, which is a key indicator of the Colorado River's health. (AP Photo/Julie Jacobson, File)

This Aug. 20, 2019 image shows the Colorado River flowing south of Page, Arizona. A plan by Utah could open the door to the state pursuing an expensive pipeline that critics say could further deplete Lake Powell, which is a key indicator of the Colorado River's health. (AP Photo/Susan Montoya Bryan)

This Aug. 21, 2019 image shows Lake Powell near Page, Arizona. A plan by Utah could open the door to the state pursuing an expensive pipeline that critics say could further deplete the lake, which is a key indicator of the Colorado River's health. (AP Photo/Susan Montoya Bryan)

FILE - In this Aug. 13, 2020 file photo a bathtub ring of light minerals delineates the high water mark on Lake Mead at the Lake Mead National Recreation Area, near Boulder City, Nev. A plan by Utah could open the door to the state pursuing an expensive pipeline that critics say could further deplete the lake, which is a key indicator of the Colorado River's health. (AP Photo/John Locher, File)

SALT LAKE CITY — As persistent drought and climate change threaten the Colorado River, several states that rely on the water acknowledge they likely won’t get what they were promised a century ago.