The Park Fire, California’s fifth-largest wildfire, is threatening essential habitats for the spring-run Chinook salmon, a species already in danger. This fire has spread into the Mill and Deer Creek watersheds in Tehama County, areas critical for the salmon to spawn and for young fish to prepare for their journey to the ocean. Federal and state officials are deeply worried that if the fire reaches higher elevations, it could severely harm the remaining salmon population, which is already very low.

The firefighting efforts, rather than the fire itself, pose a significant threat to the salmon habitats. Fire retardants, though necessary, are toxic to fish, and heavy rains could later wash ash, chemicals, and sediment into the creeks. This would smother salmon eggs and young fish and potentially cause microbial blooms that deplete oxygen levels in the water. Experts highlight that the salmon have already been declining due to dam construction and water diversion, making their situation even more precarious. Conservation efforts, such as a hatchery program by state and federal wildlife agencies, aim to protect the species, but the immediate threat from the Park Fire adds urgency to these efforts.