The photo shows the Klamath River following the 2022 McKinney Fire, with burned areas visible along the distant ridgeline and a debris fan in the foreground near the confluence of Little Humbug Creek and the Klamath River. The photo documents sediment and debris deposited from burned landscapes into the river corridor following wildfire and storm runoff. The study, conducted in cooperation with the Karuk Tribe, the Yurok Tribe and two universities, is the first published documentation of a rain-on-wildfire event directly linked to lethal water-quality conditions in a large river. The research highlights how continuous water-quality monitoring, uncommon in fire-prone areas, is critical for detecting sudden changes.…