“…Sediment supply generally varies across landscapes depending on factors associated with catchment setting, such as climate, physiography, and geology, or disturbance history (Buss et al, 2017;Croke and Hairsine, 2006;Gomi et al, 2005;Hicks et al, 1996;Johnstone and Hilley, 2014;Montgomery, 1999;Montgomery and Brandon, 2002;O'Byrne, 1967;O'Connor et al, 2014). For instance, SSY was greater in more erodible (e.g., sedimentary and volcanics) lithologies compared to more resistant lithologies in Western Oregon and northwestern California (Wise and O'Connor, 2016), the Idaho Rocky Mountains (Mueller et al, 2016;Mueller and Pitlick, 2013), Wyoming (Colby et al, 1956), and in New Zealand (Hicks et al, 1996). However, following high severity disturbances like wildfire, the potential role of lithology may be greatly reduced relative to the fine-sediment supply associated with the disturbance (Moody et al, 2008;Wise and O'Connor, 2016).…”