Michigan
Au Sable River near Au Sable
Location Snapshot
Au Sable River near Au Sable is the lower Michigan reach approaching Lake Huron near Oscoda, distinct from the inland trout water around Red Oak and Mio. Rainbow trout anchor the migratory fishery, with Chinook and coho salmon plus brown trout adding a strong Great Lakes-connected component.
Current River Rating
Fair · 61
Conditions are mixed. Review the details below before heading out.
Scores are model-specific and are not directly comparable across water types.
Partial water evidence · Medium confidence
Should I Go?
Consider
Recommended Window
Wednesday, 5:00 PM–8:00 PM
Why
- Water temperature is within the preferred trout range.
- Light wind should make casting and boat control easier.
- Very clear skies may make trout more cautious in shallow water.
Favorable Factors
- Recent precipitation has been light.
Timing Evidence
Window confidence: Medium
Current Readings
- Flow
- 1300 CFS
- Gage Height
- 8.76 ft
- Water Temperature
- 58.1 °F
- Observation Time
- Oct 20, 2026, 9:30 AM
Updated recently · USGS station 04137500 · Direct monitoring location
Readings from past 7 Days
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Historical readings are provided for context. Readings outside the current freshness window are not used to rate current conditions.
Better Nearby Options
Checking nearby StrikeTracks waters…
Preliminary guidance only. Always assess current weather, access, water depth, current speed, and your own ability before entering the river.
Changing Conditions Advisory
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Weather Near Gauge
Current Weather
Clear
Temperature
40°F
Feels like
35°F
Wind
5 mph N
Wind gust
12 mph
Current precipitation
0.00 in
Updated
Oct 20, 2026, 5:45 AM
Recent Rainfall
Estimated precipitation near this gauge
Last 6 hours
0.00 in
Last 24 hours
0.00 in
Last 48 hours
0.00 in
Little recent rainfall near this river.
Next 24 Hours
Tue 6 AM
Clear
Temp 40°F
Chance 0%
Precip 0.00 in
Wind 5 mph
Tue 10 AM
Clear
Temp 48°F
Chance 0%
Precip 0.00 in
Wind 3 mph
Tue 2 PM
Clear
Temp 60°F
Chance 0%
Precip 0.00 in
Wind 4 mph
Tue 6 PM
Clear
Temp 56°F
Chance 0%
Precip 0.00 in
Wind 4 mph
Tue 10 PM
Clear
Temp 47°F
Chance 0%
Precip 0.00 in
Wind 4 mph
Wed 2 AM
Clear
Temp 43°F
Chance 0%
Precip 0.00 in
Wind 5 mph
Four-Day Forecast
Tue, Oct 20
Clear
High 61°F / Low 39°F
Chance 0%
Precip 0.00 in
Max gust 12 mph
Wed, Oct 21
Fog
High 64°F / Low 40°F
Chance 1%
Precip 0.00 in
Max gust 15 mph
Thu, Oct 22
Mostly clear
High 64°F / Low 47°F
Chance 1%
Precip 0.00 in
Max gust 11 mph
Fri, Oct 23
Overcast
High 62°F / Low 48°F
Chance 0%
Precip 0.00 in
Max gust 19 mph
Weather and rainfall are estimated for this river's coordinates. Local conditions can vary, especially in mountainous terrain and during isolated storms.
Recent rainfall can influence river flow, but the timing and magnitude depend on watershed size, soil conditions, upstream reservoirs, and dam releases.
Weather data: Open-Meteo
Historical Flow
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Fishing Overview
Rainbow trout are in the mixed fishery on the Au Sable River near Au Sable, a Great Lakes tributary.
Fishery Profile
Documented species you may encounter at Au Sable River.
Species images are AI-generated illustrations for visual reference and may simplify natural variation. Fishery records are based on the cited agency sources. About fish illustrations
Target species
Rainbow Trout
Oncorhynchus mykiss
- Expectation
- Primary
- Population
- Migratory
- Native status
- introduced
- Confidence
- High confidence
Chinook Salmon
Oncorhynchus tshawytscha
- Expectation
- Common
- Population
- Migratory
- Native status
- introduced
- Confidence
- High confidence
Brown Trout
Salmo trutta
- Expectation
- Present
- Population
- Unknown
- Native status
- introduced
- Confidence
- High confidence
Coho Salmon
Oncorhynchus kisutch
- Expectation
- Present
- Population
- Migratory
- Native status
- introduced
- Confidence
- High confidence
Fishery characteristics
- Composition
- Mixed wild and stocked
- Great Lakes tributary
- Yes
- Flow regime
- Regulated flow
Best seasons
- Spring
- Summer
- Fall
Common techniques
- Fly fishing
- Nymphing
- Shore fishing
- Spinning
- Streamers
Official sources
Hatch Match
General fly suggestions
- Woolly-bugger-style streamerGeneral anadromous streamer family. Not a salmonfly Hatch calendar.
- Pheasant-tail-style nymphGeneral nymph family for fly-presented salmon/steelhead water.
- Soft hackleGeneral swing-style family. Not an insect emergence claim.
These are general fishing suggestions, not a report of insects currently hatching at this destination.
Location and Access
USGS monitoring location
Iosco, Michigan
The map marker represents the cataloged waterbody or monitoring location and may not indicate legal parking or public access. Confirm access through the official information before visiting.
River Details
County
Iosco
Management Category
Great Lakes tributary salmonid river
Regulation Scope
Au Sable River near Au Sable.
Regulation Summary
Lower Au Sable near Oscoda: MDNR Great Lakes tributary trout and salmon rules. Confirm current official regulations.
Target Species
rainbow-trout, chinook-salmon, coho-salmon, brown-trout
Access, Parking, and Regulations
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