The Colorado River deal announced Monday is more of a temporary reprieve than a solution to plummeting water supplies. The deep water cuts for California, Arizona and Nevada will tide over thirsty residents and farmers only until the end of 2026. The real reckoning comes when operating agreements expire for Lake Mead, which feeds the Colorado’s water to Southern California and the two other lower-basin states, and Lake Powell, which regulates the flow into Lake Mead while serving Wyoming, Colorado, Utah and New Mexico.