Researchers from three universities have authored a publication describing the events leading up to the current water shortage on the Colorado River and offering a new perspective on what is needed to stabilize or reverse the situation.

Using the Colorado River Simulation System, the researchers developed a method to quantify the magnitude of consumptive use cuts necessary to balance the system if the current drought continues and to estimate future reservoir storage under various management options. The research identifies combinations of Upper Basin consumptive use limitations and Lower Basin reductions to maintain reservoir storage levels sufficient to maintain secure water supplies if drought persists. The research also shows that current policies can't stabilize the Colorado River if the drought continues. Although the proposed reductions in consumptive use being considered by Upper and Lower Basin states may seem like a political impossibility at present, the researchers believe they will become inevitable if hydrologic conditions persist. Lakes Powell and Mead, the two major reservoirs fed by the Colorado River, reached record lows this year, nearing just 25 percent capacity. An ongoing megadrought is among the factors that have led to this situation, now in its 23rd year. Read more at Phys.org.