Guide AI

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Au Sable River / Grayling / Mio

Reading water

I can read this river for today, forecast a future trip, and build your box as we go.

Refreshing live water and weather...

When are you fishing?

Pick a window. The same river reads differently today than it does a few weeks out.

au sable river / live now

Au Sable

Grayling / Mio / Refreshing now

Prime

Flow

720 cfs

Temperature

56 F

Good trout range

Clarity

Likely stable

Light chance after sunset

Weather

Late afternoon through dusk

61-69 F / Light chance after sunset

Hatch activity

BWO emerger #18-20

Late afternoon to dusk

emerging / intensity 85%

Caddis pupa #14-16

all day

steady / intensity 62%

Tungsten pheasant tail #14-18

watch

backup / intensity 70%

Guide's read AI

Reading live gauges and forecast

The trend is steady enough to plan around hatches and shade instead of reacting to water movement.

Synthesized from live gauges, weather, food model, and guide memory.

Full report

First move

Prospect deeper runs earlier, then shift to emergers and dries as evening light drops. Build around hatching insects, nymphs, emergers.

Rig

Nymph rig first, then switch to emergers or dries when fish show.

Flies

BWO emerger #18-20, Caddis pupa #14-16, Tungsten pheasant tail #14-18

Water

Depth changes, current seams, shade, and feeding lanes you can repeat.

Window

Late afternoon to dusk

Why this read

Water

720 cfs. Stable flow likely stable. Good trout range.

Weather

61-69 F, Light chance after sunset, 6:10 AM / 8:47 PM. Air 61-69 F.

Food

Hatching insects, Nymphs, Emergers. Use the brighter hours to find lanes, then watch softer banks and tailouts for caddis, spinners, or emergers.

Adjust if

If the read changes

If wind drops near dusk, spend more time watching before casting.

If fish are rising

Switch from the first rig to an emerger or dry near BWO emerger #18-20.

If the water is clearer

Downsize, lengthen the presentation, and make the first drift count.

View gauges, weather, regulations, and trip context

Grayling / Mio

UpstreamAu Sable RiverDownstream

Populating live water, weather, clarity, and food windows

Water Movement

Stable flow

Good enough to plan around bugs, shade, and time of day instead of chasing flow changes.

Now

720 cfs

Trend

Stable

Stage

2.4 ft

Water Clarity

Likely stable

Stable flow and limited rain signal make clarity less likely to be the main limiter.

Read

Likely stable

Flow signal

Stable

Rain signal

Light chance after sunset

Water Temperature

Good trout range

56 F. Comfortable enough to fish multiple methods if clarity and light cooperate.

Now

56 F

Benchmark

Good trout range

Species

Brown trout, Brook trout

Weather Window

Late afternoon through dusk

Air 61-69 F. Light chance after sunset. Wind SW 6 mph. Use sunrise, sunset, cloud cover, and wind to pick your first window.

Air

61-69 F

Rain

Light chance after sunset

Light

6:10 AM / 8:47 PM

River guide

System memory for this water.

Au Sable River should be read through Trout, Steelhead. Do not blend Mainstream, North Branch, South Branch, and East Branch tactics. Exact branch, reach, or access can materially change the answer. Known data gaps should be handled with a short follow-up question.

Mainstream Grayling to Mio

Core Au Sable trout corridor where reach, daypart, and pressure drive the fishing plan.

flow gauge / stage gauge / water temp / weather anchor

North Branch Au Sable

Separate branch fishery with its own access, pressure, and gear restricted reach considerations.

water temp / weather anchor

South and East Branches

Branch water that should be separated from the mainstream for rules, access, and tactics.

water temp / weather anchor

Local notes

Water temperature, cloud cover, wind, and flow stability are first-order trout inputs.
Pressure and daypart can matter more than a longer fly list.
Ask for patience, daypart, and willingness to wait on a hatch before building the box.
Always ask for branch or reach before rules, tactics, or hatch timing get precise.
Mainstream, North Branch, South Branch, and East Branch can fish like different rivers on the same day.
Low light, pressure, hatch stage, and angler patience often matter more than a long fly list.
Active launch report river.

Ask before advice

If target is unclear, default to resident trout only after reach is clarified.
For steelhead questions, move away from hatch matching and into lower-river timing, color, and travel lanes.

Known gaps

Branch or reach should be confirmed before specific rules.

Trip Context

The read tightens as you add timing, target species, method, and access details.

Next best detail

Which branch, reach, bridge, or access are you thinking about?

Watch This

If wind drops near dusk, spend more time watching before casting.

Regulations

Section-specific rules may apply

Rules can change by branch, bridge, access, or named reach. Ask for the exact section before giving legal guidance.

Public river report

Au Sable River fishing report

Classic trout water where hatch timing, pressure, and daypart can change the plan quickly. This public read powers the workspace above and gives search engines, users, and future agents a stable canonical report for this water.

Brown troutBrook troutRainbow trout

Water read

Stable water gives you permission to be more precise.

The trend is steady enough to plan around hatches and shade instead of reacting to water movement.

Hatch and food

Stable water makes hatch timing worth planning around.

Stable flows shift the read from pure depth control to observation: let bugs, wind, and shade decide when to move from nymphs to emergers and dries.

Regulation guardrail

Section-specific rules may apply

Rules can change by branch, bridge, access, or named reach. Use the exact section before giving legal guidance.

Conditions snapshot

Flow

720 cfs

Trend

Stable

Water Temp

56 F

Precipitation

Light chance after sunset

Pressure

30.02 inHg and steady

Wind

SW 6 mph

Cloud Cover

52%

Sunrise

6:10 AM

Sunset

8:47 PM