Tuesday August 18, 2026
Active NorCal —
Give a creek room to act like a creek, and the fish notice within a single season.
That is the early verdict from Prairie Creek in Humboldt County, where NOAA Fisheries and a coalition of partners spent more than a decade converting a former lumber mill site into wetlands, side channels, and off-channel ponds. NOAA Fisheries reported that juvenile coho in the restored habitat are putting on size far faster than fish holding in the main channel. In certain spots and years, according to a Pacific States Marine Fisheries Commission biologist who studied growth there, they grew up to twice as fast.
Narrow, straightened channels push water fast during winter storms, and young fish that wander into that current burn more energy than they can replace. Slow water lets them eat instead of swim. Coho matter here more than most, since they spend up to two years in freshwater, and Prairie Creek remains one of the last strongholds for a species whose numbers fell roughly 90 percent over the last century.