Au Sable River near Red Oak, MI
River level and flood forecast · Oscoda County
The river is 3.7 ft below flood stage (7 ft).
Forecast to rise to 3.6 ft Wed 8 PM, below the 7 ft flood stage.
Flow: 911 cubic feet per second (USGS).
Higher than normal for October 14.
Usual for October 14: 592 to 826 cubic feet per second (the middle half of 37 years).
The last 7 days and the forecast
NWS forecast issued Tue, Oct 13, 10:16 AM. Forecasts change as rain falls and as upstream water arrives.
Flow against normal, the last 60 days
Each day's average flow from USGS. The shaded band is the middle half of past years on the same date (37 years); the dashed line is their median.
Get flood alerts for this river
An email when the National Weather Service forecasts Au Sable River near Red Oak to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 9 ft |
| Moderate flood stage | 8 ft |
| Flood stage | 7 ft |
| Action stage | 6 ft |
| Record crest (April 14, 2026) | 8.88 ft |
Highest crests on record
- 8.88 ft — April 14, 2026
- 5.92 ft — April 1, 2025
- 5.79 ft — January 17, 2022
- 5.69 ft — March 31, 2022
- 5.42 ft — April 6, 2023
Recent crests: 8.88 ft (April 14, 2026) · 5.92 ft (April 1, 2025) · 4.38 ft (March 5, 2024) · 5.42 ft (April 6, 2023) · 5.69 ft (March 31, 2022)
Highest flow on record
3,300 cubic feet per second — April 1, 1998. From the USGS's yearly peaks since 1909.
Up and down the river, and nearby
- DownstreamAu Sable River at Mio (Mio Dam), MI
- North Branch Au Sable River at Kellogg's Bridge near Lovells, MI
- South Branch Au Sable River near Luzerne, MI
- Au Sable River near McKinley, MI
- Au Sable River near Curtisville (Alcona Dam), MI
- Manistee River near Grayling, MI
- Pigeon River (N Lower MI) near Vanderbilt, MI
- Rifle River near Sterling, MI
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (RDOM4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.