Au Sable River near Red Oak

Highest listed crest 8.88 ftFlood stage 7.0 ft7 crests since 2021

The Au Sable River near Red Oak crested above flood stage 1 time among the 7 crests the National Weather Service lists from 2021 to 2026. The highest, 8.88 ft on April 14, 2026, was moderate flooding, 1.88 feet above flood stage.

The gauge

Highest listed crest: 8.88 ft; April 14, 2026; 4,835 cubic feet per second
Flood stage: 7.0 ft; Major flooding from 9.0 ft
Crests at major: 0; 1 above flood stage
Most recent flood crest: April 14, 2026; 8.88 ft, moderate flooding
Location: Oscoda County; Michigan
Identifiers: NWS RDOM4; USGS 04136000

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Au Sable River near Red Oak

Action stage	6.0	0	—	The level at which the NWS or its partners begin to take action
Flood stage (minor)	7.0	0	—	Minimal or no property damage, but possibly some public threat
Moderate flood stage	8.0	1	Apr 14, 2026	Some inundation of structures and roads near the stream
Major flood stage	9.0	0	—	Extensive inundation of structures and roads

Every listed crest

7 crests from 2021 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.
32 crests measured on an earlier gauge datum are left out: 4.79 ft on Apr 21, 1996; 6.39 ft on Apr 7, 1997; 6.66 ft on Apr 1, 1998; 4.35 ft on Oct 7, 1998; 3.69 ft on Feb 27, 2000; 5.60 ft on Apr 12, 2001; and more.

Highest crests

Highest listed crests, Au Sable River near Red Oak

1	Apr 14, 2026	8.88	+1.88	Moderate	4,835
2	Apr 1, 2025	5.92	−1.08	Below flood stage	2,517
3	Jan 17, 2022	5.79	−1.21	Below flood stage	—
4	Mar 31, 2022	5.69	−1.31	Below flood stage	2,320
5	Apr 6, 2023	5.42	−1.58	Below flood stage	2,160
6	Mar 5, 2024	4.38	−2.62	Below flood stage	1,500
7	Dec 17, 2021	4.26	−2.74	Below flood stage	1,450

Oscoda County: every hazard · River floods across the country · Michigan

NOAA National Water Prediction Service, gauge RDOM4, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.