Reservoir · Mixed · Montana

Clark Canyon Reservoir

Clark Canyon Reservoir venue image
Good · Rainbow
Callibaetis Nymph · 12-16
Goodlive now
Good summer conditions for Clark Canyon Reservoir
Good wave on — drift country. Drift fishing weather — three flies on a long leader.
65% confidence
What moved it
  • WindS 5 km/hCalm
Today's fly
CN
Callibaetis Nymph12-16
High-confidence seasonal pick
Conditions on the water
Live gauge
Wind
Calm
S 5 km/h
N
S
from the south
WaveRipple
Water temp
Air temp17°C
CloudClear
Pressure1016 hPa
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for Rainbow
When
Current conditions suit Clark Canyon Reservoir well for summer tactics. The ripple should help fish move and feed more confidently. Early morning is often the most productive window in summer — make the most of it.
Where
Start with Booby (8-10) on a fast strip on floating line or static on sinking. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses. When no hatch is visible, a buzzer team — black stripped quill on the point, attractor or pearl-rib on the top dropper — is the default starting point on any UK stillwater.
The plan
Plan A

Start with Booby (8-10) on a fast strip on floating line or static on sinking. Early in the day, try buzzers on a slow figure-of-eight or a booby on a fast-sink line near the bottom. Rainbows respond to more active retrieves — try short strips between pauses. When no hatch is visible, a buzzer team — black stripped quill on the point, attractor or pearl-rib on the top dropper — is the default starting point on any UK stillwater.

Plan B

Fish early and late, try deeper during the heat of the day with a fast-sinking line.

Watch for

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Either bank or boat

Good ripple suits both bank and boat. Bank: work inflows, dam walls, and points. Boat: broadside drift covering wind lanes.

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 5 with Pro.

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Through the year
0–3 scale · July 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
Gray DrakeHatch
2
2
CallibaetisHatch
2
3
3
3
2
Hexagenia (Western)Hatch
2
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
Rainbow fly box
Permits & access
Permit required — see local rules.
  • Montana stillwater regulations — check FWP.
What's coming
Plan ahead
5-day outlook
Condition match
78%
Cloud25%
Wind100%
Temp100%

A good match for Clark Canyon Reservoir — most conditions are close to what it fishes best in.

Other water nearby · 3
Gallery · 1
  1. Terrain map of the venue
    Terrain map
Water quality · US Clean Water Act
  • Aquatic lifeImpaired
What this classification means

EPA ATTAINS assessment unit 'Clark Canyon Reservoir' (MT41A002_010), 2021 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Hydrologic Alteration. This is a Clean Water Act assessment-unit classification (the US analogue of WFD), not a live reading.

Status is for the Clean Water Act assessment unit covering this reach.

EPA ATTAINS (Clean Water Act) · MT41A002_010

Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Temperature (cool) is in the sweet spot for summer fishing.
Directions
Seasons & zones
  • Trout1 January31 December
Related guides
Booking & contacts