South Branch Au Sable — Mason Tract (Chase to Smith Bridge): Water Level Today — Can You Paddle It?
South Branch Au Sable River · Class I · Michigan
Current verdict
Good to paddle
Levels are within the typical runnable range for this section.
USGS gauge 04135700 · updated Jul 9, 8:30 AM UTC
7-day flow trend
Section facts
- Difficulty
- Class I
- Length
- 12 mi
- Float time
- ~5 hr
- Best months
- May–October
- Put-in
- Chase Bridge
- Take-out
- Smith Bridge
Reading USGS gauge 04135700 — SOUTH BRANCH AU SABLE RIVER NEAR LUZERNE, MI ↗ · runnable range is an estimate (see methodology)
FAQ
What water level is good for paddling South Branch Au Sable — Mason Tract (Chase to Smith Bridge)?
This section is generally runnable at 100–900 cfs (a conservative estimate — see our methodology). Below that it gets too low and bony; well above the top of the range it becomes pushy and then dangerous. We compare the live USGS reading to that range to produce today's verdict.
How do I check South Branch Au Sable River levels?
We read USGS gauge 04135700 — the same public data USGS publishes — about every 30 minutes and compare it to the runnable range for this reach. You can also view the raw gauge yourself at waterdata.usgs.gov.
Is South Branch Au Sable — Mason Tract (Chase to Smith Bridge) good for beginners?
This section is rated Class I. At good levels it suits confident beginners and up, but it can have riffles or small rapids. Scout anything you can't see, and stay off it at high water.
When is the best time to paddle South Branch Au Sable River here?
Typically May–October, when flows are most reliable for this section. Spring can run high after rain or snowmelt; late summer can drop too low. Always check today's gauge reading rather than assuming.
How long does it take to float South Branch Au Sable — Mason Tract (Chase to Smith Bridge)?
This reach is about 12 miles, roughly 5 hours at a relaxed pace. Higher water is faster; low water and headwinds are slower. Add time for stops.