Michigan
Au Sable River at Mio
Current River Rating
Fair · 54
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
Saturday, 7:00 AM–10:00 AM
Why
- Air temperature is comfortable for a river trout trip.
- 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: High
Current Readings
- Flow
- 1050 CFS
- Gage Height
- 3.21 ft
- Water Temperature
- 66 °F
- Observation Time
- Sep 5, 2026, 7:30 AM
Updated recently · USGS station 04136500 · 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
59°F
Feels like
60°F
Wind
3 mph NE
Wind gust
8 mph
Current precipitation
0.00 in
Updated
Sep 5, 2026, 3:45 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
Sat 4 AM
Clear
Temp 59°F
Chance 0%
Precip 0.00 in
Wind 3 mph
Sat 8 AM
Fog
Temp 58°F
Chance 0%
Precip 0.00 in
Wind 1 mph
Sat 12 PM
Clear
Temp 72°F
Chance 0%
Precip 0.00 in
Wind 4 mph
Sat 4 PM
Partly cloudy
Temp 75°F
Chance 0%
Precip 0.00 in
Wind 5 mph
Sat 8 PM
Clear
Temp 69°F
Chance 0%
Precip 0.00 in
Wind 5 mph
Sun 12 AM
Clear
Temp 59°F
Chance 0%
Precip 0.00 in
Wind 3 mph
Four-Day Forecast
Sat, Sep 5
Fog
High 76°F / Low 57°F
Chance 0%
Precip 0.00 in
Max gust 13 mph
Sun, Sep 6
Overcast
High 74°F / Low 52°F
Chance 1%
Precip 0.00 in
Max gust 15 mph
Mon, Sep 7
Overcast
High 80°F / Low 53°F
Chance 1%
Precip 0.00 in
Max gust 18 mph
Tue, Sep 8
Drizzle
High 71°F / Low 58°F
Chance 23%
Precip 0.01 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 at Mio, 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 at Mio is the Mio Dam / Mio Pond mainstem trout fishing reach. StrikeTracks publishes Monitoring-Backed conditions from USGS 04136500 (live discharge, stage, and water temperature). Distinct from Red Oak 04136000 and Oscoda 04137500. Hydro dams block Lake Huron salmon and steelhead from this inland trout water. This existing Monitoring-Backed identity is repaired with complete fishery; it is not remapped. Flow Context remains default-deny. Hatch Match publishes general fly suggestions only.
Target species
Brown Trout
Salmo trutta
- Expectation
- Primary
- Population
- Wild
- Native status
- introduced
- Confidence
- High confidence
MDNR Au Sable Mio brown trout. USGS 04136500. Distinct from Red Oak and Oscoda.
Rainbow Trout
Oncorhynchus mykiss
- Expectation
- Common
- Population
- Unknown
- Native status
- introduced
- Confidence
- High confidence
MDNR Au Sable Mio rainbow trout.
Brook Trout
Salvelinus fontinalis
- Expectation
- Present
- Population
- Wild
- Native status
- native
- Confidence
- High confidence
MDNR Au Sable brook trout in colder water.
Fishery characteristics
- Composition
- Mixed wild and stocked
- Great Lakes tributary
- No
- Flow regime
- Regulated flow
Au Sable River at Mio Dam, Oscoda County, distinct from the Holy Waters / Red Oak reach and from the Oscoda Lake Huron reach.
Best seasons
- Spring
- Summer
- Fall
Common techniques
- Dry flies
- Fly fishing
- Nymphing
- Spinning
- Streamers
Access and Public Fishing Rights
Public fishing is documented by MDNR Mio / Au Sable access. Catalog coordinates are USGS 04136500. Dam tailwater and pond rules differ by section.
Stocking information
MDNR manages Mio Dam trout. Confirm current official stocking separately.
Official sources
MDNR Au Sable / Mio Dam trout rules change by section. Migratory steelhead (Oncorhynchus mykiss) are not a StrikeTracks species-selector ID; they are described in overview and regulation caution only. Distinct from Red Oak 04136000 and Oscoda 04137500. Confirm current MDNR Fishing Regulations.
Hatch Match
General fly suggestions
- Parachute-style dryGeneral attractor dry family — not a claim that a named mayfly is hatching.
- Pheasant-tail-style nymphGeneral nymph family for trout rivers without destination hatch timing.
- Elk-hair-style dryGeneral dry/attractor family. Pattern choice only — not a report that caddis are hatching.
- Woolly-bugger-style streamerGeneral streamer family. Not a forage or insect Hatch event.
These are general fishing suggestions, not a report of insects currently hatching at this destination.
Location and Access
USGS monitoring location
Oscoda, 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
Oscoda
Management Category
Inland trout river below Mio Dam
Regulation Scope
Au Sable River at Mio
Regulation Summary
Au Sable at Mio: MDNR inland trout stream rules for the Mio Dam reach. Confirm current official regulations.
Target Species
brown-trout, rainbow-trout, brook-trout
Access, Parking, and Regulations
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