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

Albarine

Photo of Albarine

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
New ruleReported 8 Aug 2026

Severe drought restrictions (alerte renforcée) in force

The Rivières du Bugey zone (Dept 01) is at alerte renforcée — the second-highest French drought tier — under a préfectoral arrêté. Fishing itself is not named as prohibited, but water is severely restricted and flows are likely very low; fish with care and check locally.

Arrêté préfectoral n°37638

Temporary notices from official orders and recent fishery reports — they clear automatically once out of date. Always confirm locally before travelling.

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
  • Level0.78 mLast reading 5h ago
  • Water temp23.0°C
  • ClarityClear
Today's fly
CDC Emerger
CDC Emerger16-20
Dead-drift
Conditions on the water
Live gauge
Level
Steady
0.78 m
Last reading 5h ago
Water temp23.0°C
ClarityClear
Weather29°C
WindE 6 km/h
Pressure1018 hPa
Rain · recent0.0 mm
Rain · ahead5.9 mm

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

Water temperature for Brown Trout
Warm — slow
23.0°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 23°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayPeak at 6pm

Hatch predictions

Today's headline hatch shown — see all 9 active hatches hour by hour with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 3 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 · August 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
Brown SedgeHatch
2
3
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Blue Winged OliveHatch
2
3
3
3
3
2
Mayfly (Green Drake)Hatch
2
2

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

Ranked for today
Brown Trout fly box

Sight-nymphing and technical dry-fly fishing on very clear trout and grayling rivers, with strong mayfly and sedge windows and highly selective fish.

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 23.0°C. Nothing cooler within range.
Gallery · 2
  1. Photo of Albarine
    Albarine — image via Wikipedia (Albarine)
  2. 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.

Hatches & food

In chalk-spring and karst trout systems, generally stable temperatures broaden olive and other mayfly activity from early spring into autumn, with strong evening caddis, steady subsurface scuds and buzzers where clear groundwater and weedbeds develop, and terrestrials from meadow and woodland banks rounding out the food calendar, depending on how fast each river drops and clears after rain.

  • Limestone
Water quality (WFD)
  • EcologyGood
  • ChemicalUnknown

WFD classification · FRDR486

The full read · show the working · for Brown Trout · confidence 90%
How the 4 is built — score × weight = contribution
Temperature2 × 28%0.6
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity65 × 12%7.8
Limiting factor: Water temperature (23°C) is outside Brown Trout's preferred range (10–16°C)= 57
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
  • Trout 2nd Saturday of March3rd Sunday of September
  • Grayling 3rd Saturday of May31 December

    France national rule: grayling opens 3rd Saturday of May in all waters. In 2nd category waters, grayling remains open until 31 December. Departmental regulations may impose earlier closing dates. Always check the relevant département's 2026 arrêté préfectoral.

Related guides
Booking & contacts