RiverFinn
Au Sable — South Branch (Mason Tract)
Au Sable River · Michigan · Freestone
Chase Bridge downstream through the Mason Tract to Smith Bridge
- Brook Trout
- Brown Trout
This water is open in full on the free tier.
What RiverFinn tracks here
The catalog, not today's numbers — those live in the app, with their observation times. This is what exists for the stretch and what does not.
Live discharge from USGS.
A thermometer reports here (USGS).
Not enough years of record at this gauge for a fair comparison.
National Weather Service forecast for the reach.
Reference only: Michigan Department of Natural Resources does not publish per-reach notices RiverFinn can read; the app links to the official page.
General state regulations apply; always confirm with Michigan Department of Natural Resources.
Fish Au Sable — South Branch (Mason Tract) with the facts.
Today's flow, the forecast, any closure and Finn's read — in the app.