Colorado River basin states want congressional approval by April 22 so that Mexico also will contribute water starting in 2020.
A deal was supposed to be signed by the end of 2018, under threat that the water levels on the river would push the federal government to impose its own restrictions.
As extreme drought encroached on Colorado and much of the Southwest this year, many eyes turned to the weekly U.S. Drought Monitor map.
About 25 percent of Latino voters are reliable Republicans, but others seem willing to support the GOP amid the solid economy.
Arizona water managers have been leading a series of biweekly meetings since July to work out details of the proposed drought-contingency plan.
The chances of a shortfall in Lake Mead, the Colorado River’s biggest reservoir, are now 57 percent, up from the 52 percent projected in May.
Colorado's first half-year of legal sales in 2014 couldn't hold a match to the Nevada performed, the latest numbers show.
In western Colorado, volunteers say they’re preparing to bring up to 5,000 gallons of water per day to a herd of 750 desperate horses.
Projections show there's a chance that Lake Mead will fall low enough in 2020 to trigger cutbacks under agreements governing the system.