The Colorado River, a major source of Arizona’s water supply, is expected to remain in a water shortage condition through 2026, presenting a major challenge for the state in facing potential serious drought situations. Enrique Vivoni, a professor of in the School of Sustainable Engineering and the Built Environment, part of the Fulton Schools, and the director of the Center for Hydrologic Innovations, explains that much of the problem stems from dry soils soaking up precipitation during a long dry spell. Predictions show another year of only a small amount of water runoff from the reservoir system could pull the situation into a catastrophic condition.