Moving water means making electricity. But the drought is making that harder to do. The lack of water has put a serious crimp in the hydroelectric line at Hoover Dam and other power plants across the west, limiting an inexpensive and pollution-free energy source that once was considered endless. As Lake Mead shrinks, the Hoover Dam has been trying to avoid ‘dead pool’ status – the point at which hydropower can no longer be generated. In 2008, a Scripps Institution of Oceanography, UC San Diego, research paper asked the provocative question, When Will Lake Mead Go Dry? The study predicted the lake had a 50-50 shot at achieving that fate by 2021, given current trends. “The system is in deep trouble,” said Tim Barnett, one of the study’s lead authors.