Scott Jasechko, University of California Santa Barbara, Santa Barbara, United States, Hansjoerg F Seybold, Massachusetts Institute of Technology, Cambridge, MA, United States, Debra Perrone, University of California - Santa Barbara, Santa Barbara, CA, United States, Ying Fan, Rutgers University, Department of Earth and Planetary Sciences, Piscataway, NJ, United States and James W Kirchner, ETH Swiss Federal Institute of Technology Zurich, Department of Environmental Systems Science, Zurich, Switzerland