On 7 September 2020, strong winds in western Oregon ignited and spread many small fires, leading to multiple simultaneous megafires (fires > 404 km2) that burned across multiple land ownerships. These fires burned at differing severities, resulting in a range of post-fire riparian and freshwater conditions and an opportunity to evaluate aquatic and riparian responses to fire across ownerships that vary in elevation, forest stand age, and forest-management strategies. To better understand these dynamics, the authors in this study measured riparian overstory survival, LW, and coarse wood (wood in riparian areas), as well as in-stream physical, chemical, and biological variables to fire severity and pre-fire stand age in 24 streams in western Oregon from 8-11 months following multiple fires, including the Riverside, Beachie, and Holiday Farm Fires.