Tailwater · Gravel · Alberta, CA

Bow River — below Calgary (McKinnon Flats to Carseland)

Bow River — below Calgary (McKinnon Flats to Carseland) — Banff, Alberta - rivière Bow river
Tomorrow · About as good as it gets
Czech Nymph
Forecast · Tomorrow
About as good as it gets
On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
90% projected
Today's fly
Czech Nymph
Czech Nymph
Conditions on the water · Tomorrow
Live gauge
Level
Steady
0.83 m
Dropping in the last 6h
Water temp10.9°C
ClarityClear
Weather-1°C
WindN 9 km/h
Pressure1014 hPa
Rain · recent4.0 mm
Rain · ahead0.6 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Ideal
11°C est.ideal 10–16°C
0°14°28°

We have not characterised this dam's release, so this is a general cold-release figure and could be several degrees out in either direction. Treat it as a hint, not a reading, and check locally before you fish.

How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Excellent — water temperature is right today, though time of day could be better.
Likely species
Mayflies
Chironomids
Damselflies & dragonflies
Gammarids
Hatch timeline · tomorrowPeak at 11h

12h(now) — Western Blue-Winged Olive

Stage: On emergersApproach: Emerger or dryActivity: 67%
Also:Black Midge47%
Peak emergence windowWeather boost6 food groups active

Peak activity at 11h — Western Blue-Winged Olive (Western Blue-Winged Olive, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 as a supporter.

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Evidence
Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Through the year
0–3 scale · October 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
Western Blue-Winged OliveHatch
2
3
3
3
3
3
3
3
2
Pale Morning DunHatch
2
3
3
2
TricoHatch
2
3
2
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2

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

Ranked for today
Fly box · Brown Trout
Permits & access
Permit required — see local rules.
  • Reach-specific C&R / bait-restricted rules
  • Verify current Alberta regs (Zone ES1).
What's coming
Plan ahead
5-day outlook
Other water nearby · 4
Bow River — Calgary (Bearspaw to Policeman's Flats)
24 km
88
Brown trout · Rainbow trout
Sheep River
49 km
Cutthroat trout · Bull trout · Rainbow trout
Highwood River
53 km
Cutthroat trout · Bull trout · Rainbow trout
Elbow River
59 km
Cutthroat trout · Bull trout · Rainbow trout
Gallery · 2
  1. Bow River — below Calgary (McKinnon Flats to Carseland) — Banff, Alberta - rivière Bow river
    Banff, Alberta - rivière Bow river
  2. Terrain map of the venue
    Terrain map
Conservation note

Wild brown and rainbow trout (no stocking). Bull trout (char, zero limit) and mountain whitefish present, not harvest targets. Whirling disease present — Clean-Drain-Dry.

The full read · show the working · for Brown Trout · confidence 90%
How the 88 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow95 × 22%20.9
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity71 × 12%8.5
Conditions total= 88
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.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 January → 31 December
Related guides
Euro Nymphingsubsurface methods
Booking & contacts