Spring is generally a time of renewal for the watersheds of the western United States. Warmed by the lengthening days, the region’s towering mountain ranges shed their mantle of snow, releasing freshets of water into welcoming streams and reservoirs. This year, though, the cycle is in disarray. Outside of the Olympic and Cascade ranges of Washington state, winter snows were subpar. The spring melt has been a dud. From the Klamath to the Colorado and Rio Grande, watersheds are under stress once again, and water managers face difficult tradeoffs between farms, fisheries, and at-home uses.