The National Water and Climate Center produces this weekly report in cooperation with the National Drought Mitigation Center and other Federal agencies. The report focuses on snowpack, precipitation, and temperature conditions in the western U.S., and features a national drought summary.
For the 2015 Water Year that began on October 1, 2014, the largest snowpack deficits (red areas) are in the Cascades and Olympics of Oregon and Washington, the Sierra Nevada as well as some basins in Arizona. More Here