RiverFinn
Cowlitz — Below Mayfield Dam
Cowlitz River · Washington · Tailwater
Mayfield Dam downstream past the Barrier Dam to Blue Creek
- Steelhead
- Cutthroat Trout
- Chinook Salmon
- Coho Salmon
- Mountain Whitefish
What RiverFinn tracks here
The sources, not today's numbers — those live in the app, with their observation times. This is what exists for the stretch, what does not, and where each figure comes from so you can check it yourself.
No live water-temperature source. The app shows "no live reading" rather than an estimate.
A dam or spring sets the flow here, so RiverFinn does not compare it with a natural seasonal normal.
Checked automatically from Washington Department of Fish & Wildlife's published notices several times a day and mapped to this reach.
Official source ↗General state regulations apply; always confirm with Washington Department of Fish & Wildlife.
Official source ↗Fish Cowlitz — Below Mayfield Dam with the facts.
Today's flow, the forecast, any closure and Finn's read — in the app.