Michigan
Au Sable River near Au Sable
Current River Rating
Poor · 29
Conditions are unfavorable based on the available readings.
Scores are model-specific and are not directly comparable across water types.
Partial water evidence · Medium confidence
Should I Go?
Do Not Go
Avoid This Period
Saturday, 7:00 AM–10:00 AM
This is an informational evaluation period, not a recommended fishing window. These seasonal suggestions should not be interpreted as a recommendation to enter
Why
- Very clear skies may make trout more cautious in shallow water.
Favorable Factors
- Recent precipitation has been light.
- Light wind should make casting and boat control easier.
- Air temperature is comfortable for a river trout trip.
Blocking Factors
- Water temperature is unfavorable for trout fishing.
Current Readings
- Flow
- 1420 CFS
- Gage Height
- 8.95 ft
- Water Temperature
- 72.1 °F
- Observation Time
- Sep 5, 2026, 7:30 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
63°F
Feels like
64°F
Wind
4 mph N
Wind gust
11 mph
Current precipitation
0.00 in
Updated
Sep 5, 2026, 1:15 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
Sat 4 AM
Clear
Temp 61°F
Chance 0%
Precip 0.00 in
Wind 5 mph
Sat 8 AM
Clear
Temp 62°F
Chance 1%
Precip 0.00 in
Wind 4 mph
Sat 12 PM
Clear
Temp 72°F
Chance 0%
Precip 0.00 in
Wind 8 mph
Sat 4 PM
Clear
Temp 73°F
Chance 0%
Precip 0.00 in
Wind 8 mph
Sat 8 PM
Clear
Temp 66°F
Chance 0%
Precip 0.00 in
Wind 5 mph
Sun 12 AM
Clear
Temp 60°F
Chance 0%
Precip 0.00 in
Wind 4 mph
Four-Day Forecast
Sat, Sep 5
Partly cloudy
High 74°F / Low 60°F
Chance 1%
Precip 0.00 in
Max gust 15 mph
Sun, Sep 6
Overcast
High 72°F / Low 58°F
Chance 2%
Precip 0.00 in
Max gust 15 mph
Mon, Sep 7
Overcast
High 77°F / Low 54°F
Chance 1%
Precip 0.00 in
Max gust 11 mph
Tue, Sep 8
Drizzle
High 78°F / Low 58°F
Chance 24%
Precip 0.00 in
Max gust 33 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
Au Sable River near Au Sable, Michigan. Monitoring-Backed from USGS (live 00010, 00060, 00065).
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
Fishery overview
The Au Sable near Au Sable / Oscoda is the lower Lake Huron tributary fishing reach below the hydro chain. StrikeTracks publishes Monitoring-Backed conditions from USGS 04137500 (live discharge, stage, and water temperature). Distinct from Mio 04136500 and Red Oak 04136000. Steelhead and Chinook/coho runs are MDNR Great Lakes tributary fisheries, not condition ratings. Resident rainbow trout are the honest selector primary. Flow Context remains default-deny. Hatch Match publishes general fly suggestions only.
Target species
Rainbow Trout
Oncorhynchus mykiss
- Expectation
- Primary
- Population
- Migratory
- Native status
- introduced
- Confidence
- High confidence
MDNR lower Au Sable / Oscoda. USGS 04137500. Migratory steelhead (Oncorhynchus mykiss) are not a StrikeTracks species-selector ID; they are described in overview and regulation caution only.
Chinook Salmon
Oncorhynchus tshawytscha
- Expectation
- Common
- Population
- Migratory
- Native status
- introduced
- Confidence
- High confidence
Seasonal MDNR Chinook. Confirm current notices. MDNR weir, fish-ladder, creel, and stocking counts are fishery context. They are not StrikeTracks river condition ratings.
Brown Trout
Salmo trutta
- Expectation
- Present
- Population
- Unknown
- Native status
- introduced
- Confidence
- High confidence
MDNR lower Au Sable brown trout, including migratory fish.
Coho Salmon
Oncorhynchus kisutch
- Expectation
- Present
- Population
- Migratory
- Native status
- introduced
- Confidence
- High confidence
Seasonal MDNR coho. Confirm current notices. MDNR weir, fish-ladder, creel, and stocking counts are fishery context. They are not StrikeTracks river condition ratings.
Fishery characteristics
- Composition
- Mixed wild and stocked
- Great Lakes tributary
- Yes
- Flow regime
- Regulated flow
Lower Au Sable in Iosco County near Oscoda, connected to Lake Huron, distinct from inland Holy Waters and Mio Dam trout water.
Best seasons
- Spring
- Summer
- Fall
Common techniques
- Fly fishing
- Nymphing
- Shore fishing
- Spinning
- Streamers
Access and Public Fishing Rights
Public fishing is documented by MDNR Oscoda / lower Au Sable access and river-mouth corridors. Catalog coordinates are USGS 04137500. This pin is not Mio or Red Oak.
Stocking information
MDNR Great Lakes trout and salmon programs stock lower Au Sable migratory fish. Confirm current official notices. Weir counts are not ratings.
Official sources
MDNR Great Lakes tributary trout and salmon rules, including Foote Dam closures, change. Migratory steelhead (Oncorhynchus mykiss) are not a StrikeTracks species-selector ID; they are described in overview and regulation caution only. MDNR weir, fish-ladder, creel, and stocking counts are fishery context. They are not StrikeTracks river condition ratings. Distinct from Mio 04136500. Confirm current MDNR regulations.
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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