A Central Arizona Project-backed advocacy group called the Coalition for Protecting Arizona’s Lifeline has begun rolling out television ads and online videos defending the water supplier’s rights to a Colorado River that is under serious hydrological and political strain. … While the materials don’t directly state members’ intended method of securing water, some of the videos lean heavily on the so-called Law of the River and its guarantee of water from the four headwaters states to Arizona, California and Nevada. This theme reiterates a point that CAP and Arizona water officials have stressed over the last year or so, that if push comes to shove in a legal battle, they have the 1922 Colorado River Compact on their side.

Other Colorado River news:

• Aspen Journalism (Colo.): Colorado River crisis fails to force deal from states
• SFGate: ‘The chaos of human systems failing’: Colorado River water debacle intensifies
• KCRA (Sacramento, Calif.): California’s top environmental official explains the conundrum over the Colorado River 
• KKCO (Grand Junction, Colo.): Mesa County leader reacts to missed deadline for states’ Colorado River agreement
• The Salt Lake Tribune (Utah): Lake Powell sinking toward record low as states miss deadline for Colorado River drought deal
• Las Vegas Review-Journal (Nev.): Editorial: All states should share in Colorado River cutbacks