Freestone · Limestone · Haute-Savoie, FR

Fillière

A clear rocky-bedded stream, the Filliere river, flowing between bare winter trees near Les Ollieres, Haute-Savoie, France.

The Fillière feeds the Fier from the Bornes massif and carries enough limestone character to behave like a miniature Jura stream — clear, cold, and stubbornly selective.

Tomorrow · Closed season
Sculpin Streamer
Forecast · Tomorrow
Closed season
Out of season. Try elsewhere.
45% projected
Today's fly
Sculpin Streamer
Sculpin Streamer
Conditions on the water · Tomorrow
Live gauge
Level
Rising
0.56 m
Lifting fast
Water temp9.5°C
ClarityUnfishable
Weather6°C
WindN 9 km/h
Pressure1016 hPa
Rain · recent38.2 mm
Rain · ahead15.1 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
Cool — slow
10°C est.ideal 10–16°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.
Likely species
Hatch timeline · tomorrowPeak at 11am

12pm(now) — Autumn Needle Fly

Stage: Creeping nymphsApproach: Heavy nymphActivity: 41%
Also:Autumn Olive23%
Peak emergence window4 food groups active

Peak activity at 11am — Autumn Needle Fly (Autumn Needle Fly, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 4 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Supporters see what else is on the menu.

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Evidence
Survey-backed · regionalHigh confidence

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

Through the year
0–3 scale · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Alpine RhithrogenaHatch
2
3
3
2
Sculpin / Baitfish (Rivers)Hatch
2
3
3
3
3
3
3
3
2
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2

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

Ranked for today
Brown Trout fly box

French nymph-first water. Fast current, technical presentation, weighted nymphs and emergers, with dry flies when fish rise.

What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
  1. A clear rocky-bedded stream, the Filliere river, flowing between bare winter trees near Les Ollieres, Haute-Savoie, France.
    La Filliere @ Les Ollieres
  2. Terrain map of the venue
    Terrain map
About this water

It's not long and it's not big, and the pools are short enough that you'll fish the whole river in a morning if you move quickly and know what you're doing. The trout are wild, small, and educated; they've seen the hatches come and go for their entire lives and they are not easily persuaded. Match the olive, drop it on the cushion above the fish, and try not to false-cast over the pool. The canopy is tight in places — a 7ft 3-weight is the right rod. Spring and early summer are the moment. By August the flow thins and the fish retreat under the cut-banks where you can't reach them.

  • Limestone
Water quality (WFD)
  • Ecology: Good
  • Chemical: Good

WFD classification · FRDR537

The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature98 × 28%27.4
Flow95 × 22%20.9
Clarity40 × 18%7.2
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity67 × 12%8.0
Conditions total= 78
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
Directions
Seasons & zones
  • Trout 2nd Saturday of March → 3rd Sunday of September
Related guides
Booking & contacts
At a glance

Fillière is a freestone river in Haute-Savoie, France. Its recorded elevation is about 513 m above sea level and the catchment geology is limestone. The species listed for this water is brown trout. The trout season is recorded as running from 2nd Saturday of March to 3rd Sunday of September. Level and flow data for this water is linked from 1 gauge. Its Water Framework Directive ecological status is recorded as good. Nearby waters in our listings include Fier at 7.0 km, Lac d'Annecy at 14 km and Usses at 16 km.