The impact of snowpack decline on high elevation surface-water flow in the Willamette River: a stable isotope perspective

J Renee Brooks1, Henry Johnson2, Steven P Cline3 and William Rugh1, (1)U.S. Environmental Protection Agency, Pacific Ecological Systems Division, Corvallis, United States, (2)USGS Oregon Water Science Center, Portland, OR, United States, (3)Environmental Protection Agency Corvallis, Pacific Ecological Systems Division, Corvallis, United States