Au Sable River near Curtisville (Alcona Dam), MI
River level and flood forecast · Alcona County
Normal8.3 ftas of Tue 1:15 AM
Flow: 1,180 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.
Highest crests on record
- 15.31 ft — April 13, 2026
- 13.56 ft — April 1, 1998
- 13.54 ft — October 24, 2017
- 13.51 ft — April 1, 2016
- 13.46 ft — April 15, 2014
Recent crests: 15.31 ft (April 13, 2026) · 11.98 ft (April 6, 2023) · 11.69 ft (April 1, 2022) · 9.78 ft (December 12, 2021) · 10.21 ft (September 8, 2021)
Up and down the river, and nearby
- UpstreamAu Sable River near McKinley, MI
- DownstreamAu Sable River near Au Sable, MI
- Au Sable River at Mio (Mio Dam), MI
- Au Sable River near Red Oak, MI
- East Branch Au Gres River near Alabaster, MI
- North Branch Au Sable River at Kellogg's Bridge near Lovells, MI
- South Branch Au Sable River near Luzerne, MI
- Au Gres River near Au Gres, MI
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (CSVM4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.