Arizona risks losing water rights because of a lingering, nearly two-decade long drought in the Colorado River that could restrict water use ranging from farmers’ crops to how many households receive water, state water experts say. Calcium rings around Lake Mead tell the story of declining water levels, with cream markings permanently decorating the canyon walls that shows high levels that haven’t been seen since 1983. Current surface elevation is at 1,081 feet. If it drops another six feet, water to Arizona will likely be cut, according to an Arizona budget document.