Freestone · Glacial Till · Ontario

Nottawasaga River

Nottawasaga River terrain map
Terrain map

The Nottawasaga at Wasaga Beach carries one of Georgian Bay's biggest steelhead runs, with chinook and resident browns and a network of cold-water tributaries.

Species

About as good as it gets

River high but settled. Fish are looking up — bigger flies, confident takes.

The water temperature is around 12°C, about where the steelhead want it, sitting at a steady height, running clear.

90% confidence in this read
Water temperature for steelhead
Ideal
12°C est.ideal 4–13°C
0°14°28°
The full read · show the working · for steelhead · confidence 90%
How the 83 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure75 × 7%5.3
Insect activity54 × 12%6.5
Conditions total= 83
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Conditions
●Live gauge
Level
5.66 m
Water temp
12.1°C
Estimated
Clarity
Clear
Air temp
13°C
Wind
S 15 km/h
Gentle breeze
Pressure
1003 hPa
Rain · 48h
0.8 mm
No meaningful rain
Rain · ahead
17.9 mm
Moderate rain · next 48h

Live readings — water temperature is an estimate where the gauge does not record it.

Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 11 active hatches hour by hour with Pro.

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Evidence
ModelledModerate confidence

Modelled from regional ecology — no survey or occurrence data for this water yet.

How to fish it · for steelhead
When
Spring and fall steelhead; chinook in autumn.
Where
The Nottawasaga at Wasaga Beach carries one of Georgian Bay's biggest steelhead runs, with chinook and resident browns and a network of cold-water tributaries.
Why this works
Excellent — water temperature is right today, though insect activity could be better.
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
2
2
2
2
1
Quill GordonHatch
2
2
Blue QuillHatch
2
3
2
HendricksonHatch
2
2
Eastern March BrownHatch
2
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Permits & access
Permit required — see local rules.
  • Sanctuary reaches and FMZ 16 seasons; tributary-specific rules
  • Verify current OFRS.
Directions
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About this water

The Nottawasaga at Wasaga Beach carries one of Georgian Bay's biggest steelhead runs, with chinook and resident browns and a network of cold-water tributaries. A sandy, lower-gradient river that colours and warms easily, it fishes for lake-run rainbows in spring and fall on the clarity drop — a major southern-Ontario steelhead destination.

Under the surface

The Nottawasaga reaches Georgian Bay at Wasaga Beach and runs one of the area's largest steelhead populations, with chinook and resident brown trout. A sandy, lower-gradient system through glacial-till country, it colours and warms readily; spring and fall are the steelhead windows, and its tributaries (Boyne, Pine, Mad) add cold-water character.

Wading: Soft sand, coloured flows, warm low summer water

  • Glacial till
  • Unconfined
  • Pool riffle
  • Large river
Seasons & zones
  • Trout1 January → 31 December
Other water nearby · 2
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