Freestone · Granite · Creuse / Berry (Combraille)

Cher (Upper Trout Reach)

Cher (Upper Trout Reach) — Saint-Aignan-sur-Cher, France
Contributor photo

Saint-Aignan-sur-Cher, France

pom'. (https://www.flickr.com/photos/146832554@N06) - CC0

The Cher that everyone knows from school geography — the broad sand-and-weed river that flows under the chateaux of the Loire — has an upper section that nobody on holiday ever seems to visit.

Poor · Brown Trout
CDC Emerger · 16-18
Poorlive now
Not the day for it
River temperature is the limiting factor today, not the flow. This is not the day to push it. Check the thermal advice above before you head out.
90% confidence
What moved it
  • LevelDry recentlyNo gauge reading
  • Water temp22.5°C
  • ClarityClear
Today’s fly
CDC Emerger
CDC Emerger16-18
Dead-drift
Conditions on the water
Estimate
Level
Dry recently
No gauge reading
Water temp22.5°C
ClarityClear
Weather23°C
WindS 7 km/h
Pressure1016 hPa
Rain · recent0.0 mm
Rain · ahead4.5 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for brown trout
Warm — slow
23°C est.ideal 1016°C
0°14°28°
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
⛔ Water at 22.5°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

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Evidence
Survey-backed · regionalModerate confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

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
1
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
GrannomHatch
1
1

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

Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • AAPPMA Creuse / AAPPMA Allier border
  • Standard 1ère catégorie.
What's coming
Plan ahead
5-day outlook
Water here around 23°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
  1. Cher (Upper Trout Reach) — Saint-Aignan-sur-Cher, France
    Saint-Aignan-sur-Cher, France
  2. Terrain map of the venue
    Terrain map
About this water

The Cher that everyone knows from school geography — the broad sand-and-weed river that flows under the chateaux of the Loire — has an upper section that nobody on holiday ever seems to visit. It rises in the Combraille granite of the Creuse département and for its first forty kilometres it is a proper wild trout river, running through bocage and small woods, rarely more than a few yards wide, rarely more than a couple of feet deep in the ordinary runs. The kind of water where a good fish is a foot long and you are happy about it. The hatches are honest — Baetis, caddis, occasional March Browns — and the trout are wild and free-rising in the warmer months. Fish the nymph in April and early May while the water is still cold, then shift to dry fly once the caddis build through the second half of May. The best water is in the middle reach, above Montluçon, where the river cuts through old farm country and the banks are overgrown enough to make short rods and careful casting worth the trouble. There is no glamour in the upper Cher. There is just a decent small river doing what small rivers do, very quietly, with nobody watching.

  • Granite
Water quality (WFD)
  • EcologyModerate
  • ChemicalUnknown

WFD classification · FRGR0146

The full read · show the working · for brown trout · confidence 90%
How the 8 is built — score × weight = contribution
Temperature4 × 28%1.1
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity40 × 12%4.8
Limiting factor: Water temperature (22.5°C) is outside Brown Trout's preferred range (10–16°C)= 47
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Trout2nd Saturday of March → 3rd Sunday of September
Related guides
Booking & contacts