Dulcinea Avouris¹, Erin Lee Hestir², Jacob Fleck¹, Mark C Marvin-DiPasquale³, Charles N Alpers⁴ and Brian A Bergamaschi¹, (1)USGS California Water Science Center Sacramento, Sacramento, United States, (2)University of California Merced, Department of Civil & Environmental Engineering, Merced, CA, United States, (3)U.S. Geological Survey, Menlo Park, United States, (4)United States Geological Survey, Sacramento, CA, United States