Boat Ramp Guide
river MI

Au Sable River - South Branch Water Level

Live water level data from USGS monitoring gauges near Au Sable River - South Branch. Monitoring conditions for 5 boat ramps.

Current Level

5.72 ft
Status Unavailable
USGS Gauge: SOUTH BRANCH AU SABLE RIVER NEAR LUZERNE, MI Updated 43m ago

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Monitoring Gauges

SOUTH BRANCH AU SABLE RIVER NEAR LUZERNE, MI

USGS 04135700 · Stream gauge · 0.0 mi from nearest ramp

Full USGS data →

HIGGINS LAKE NEAR ROSCOMMON, MI

USGS 442805084411001 · Lake gauge · 7.5 mi from nearest ramp

Full USGS data →

How Water Levels Affect Boat Ramp Access

Au Sable River - South Branch has 5 public boat ramps. When water levels drop significantly below normal, concrete ramps may not extend to the waterline and natural or gravel launches can become impassable. Carry-in launches for kayaks and canoes are generally less affected by water level changes.

Check the current gauge reading above before trailering to Au Sable River - South Branch. For detailed information on individual ramps, visit the Au Sable River - South Branch boat ramps page.

Frequently Asked Questions

What is the current water level of Au Sable River - South Branch?
As of May 3, 2026, the gauge height at Au Sable River - South Branch is 5.72 ft. This is being monitored for this time of year.
How do water levels affect boat ramp access at Au Sable River - South Branch?
Au Sable River - South Branch has 5 public boat ramps. When water levels are significantly below normal, some ramps may become difficult to use or inaccessible. Concrete ramps are generally usable at a wider range of water levels than natural or gravel launches.
Where does this water level data come from?
Water level data is provided by the U.S. Geological Survey (USGS) National Water Information System. Readings are updated approximately every 15 minutes from automated monitoring gauges. Data shown here is provisional and subject to revision.
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