Christopher H Conaway, US Geological Survey, Water Mission Area, Earth System Processes Division, Menlo Park, CA, United States, Cordell D Johnson, USGS, Pacific Coastal and Marine Science Center, Santa Cruz, CA, United States, Thomas D Lorenson, USGS PCMSC, Santa Cruz, CA, United States, Merritt R Turetsky, University of Guelph, Guelph, ON, Canada, Eugenie Susanne Euskirchen, University of Alaska Fairbanks, Fairbanks, AK, United States, Mark P Waldrop, US Geological Survey, Geology, Minerals, Energy, and Geophysics Science Center, Menlo Park, CA, United States and Peter W Swarzenski, IAEA International Atomic Energy Agency, Monaco, Monaco