Karst · Limestone · Jura-edge / Ain (Bugey)

Albarine

Albarine venue image
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The Albarine is limestone spring water that achieves something continental Europe preserves with jealous precision — chalkstream character in a French key.

Poor · Brown Trout
CDC Emerger · 16-20
Poorlive now
Not the day for it
River steady at a fishable height. Take your time — read the water before you cast.
80% confidence
What moved it
  • Level0.80 mLast reading 3h ago
  • Water temp20.9°C
  • ClarityClear
Today’s fly
CDC Emerger
CDC Emerger16-20
Dead-drift
Conditions on the water
Live gauge
Level
Steady
0.80 m
Last reading 3h ago
Water temp20.9°C
ClarityClear
Weather19°C
WindE 8 km/h
Pressure1022 hPa
Rain · recent4.6 mm
Rain · ahead4.9 mm

Live readings only. Trends shown where the gauge supports them.

Water temperature for brown trout
Warm — slow
20.9°Cideal 1016°C
0°14°28°
How to fish it · for brown trout
When
Through the open trout season. Spring olives April through May; sedges through summer; small dark flies into autumn close.
Where
Karst water through the Bugey hills. Pool tails and the cushion behind boulders. The Albarine is intimate — short casts pay.
Method
Upstream dry to spotted rising fish; long fine leader. The water reads clear — careful approach matters more than fly choice. Move slowly upstream, cast accurately, accept the result.
Kit
9 ft #4 — French karst-stream default. Floating line, 14 ft leader to 4 lb fluoro. Polarising glasses non-negotiable.
Why this works
⚠️ Water at 20.9°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — water clarity is in the right range.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 5 active hatches hour by hour with Pro.

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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
Grayling seasonSeason
1
2
2
2
2
2
2
1
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
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.
  • Non-reciprocal water — specific day/annual cards required
  • Not covered by standard carte de pêche reciprocity.
What's coming
Plan ahead
5-day outlook
Water here at 20.9°C. Nothing cooler within range.
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

The Albarine is limestone spring water that achieves something continental Europe preserves with jealous precision — chalkstream character in a French key. Crystal-clear, spring-held temperature, ranunculus threading the current into polished lanes, and trout so firmly convinced of their own discernment that a fly two inches astray is no longer your concern. The river demands small, exact presentations (sixteens and eighteens for olives, ephemeralids equally fine), and it expects you to have read the hatch properly before you arrive. Fly-only on the designated beats. Non-reciprocal — the Albarine holds itself separate from the standard carte de pêche world, which is entirely its right. You will fish here by invitation and advance arrangement, and in return you will fish water that remembers why precision matters. Grayling hold in the lower reaches year-round. This is a river for those who understand that constraint is not punishment — it is the price of access to water worth the keeping.

  • Limestone
Water quality (WFD)
  • EcologyGood
  • ChemicalUnknown

WFD classification · FRDR486

The full read · show the working · for brown trout · confidence 80%
How the 22 is built — score × weight = contribution
Temperature15 × 28%4.2
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity55 × 12%6.6
Limiting factor: Water temperature (20.9°C) is outside Brown Trout's preferred range (10–16°C)= 59
Can you trust it?
Water temperaturelive gauge readinggauge
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
  • Grayling3rd Saturday of May → 31 December
Related guides
Booking & contacts