Limestone · Jura / Neuchâtel, CH

Doubs

The Doubs river winding through a wooded limestone gorge near the Saut du Doubs on the Swiss-French border.

Jura limestone river forming part of the French-Swiss border, exceptional grayling fishing and wild brown trout in chalk stream character water.

Prime · Grayling
Pink Grayling Bug · Hook 16
Primelive now
About as good as it gets
River high but settled. Coloured water — fish bigger and deeper, confident takes down the seams.
90% confidence
What moved it
  • Level743.42 m
  • Water temp12.6°C
  • ClarityClear
Today's fly
Pink Grayling Bug
Pink Grayling BugHook 16
in season · matches water height · all-rounder
Conditions on the water
Live gauge
Level
Steady
743.42 m
Water temp12.6°C
ClarityClear
Weather19°C
WindN 5 km/h
Pressure1021 hPa
Rain · recent0.0 mm
Rain · ahead16.5 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Grayling
Ideal
13°C est.ideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
Midday window — grayling feed best from late morning into early afternoon.
Where
Work runs and glides — grayling shoal in the bottom third of the water column.
Method
Tight-line nymph the bottom third with weighted patterns.
Kit
10 ft #3 rod, floating line, long leader to 4 lb fluoro for nymphs.
Why this works
Excellent — conditions well-balanced, with water temperature particularly in your favour.
Likely species
Mayflies
Stoneflies
Caddisflies
Damselflies & dragonflies
Gammarids
Hatch timeline · todayPeak at 2pm

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 5 as a supporter.

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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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1

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

Ranked for today
Grayling fly box

A compact but high-quality Swiss box covering alpine streams, mountain lakes, and Jura salmonid rivers such as the Doubs.

Small Perdigón
Small Perdigón
Hook 14–18 · Fly
in season · matches water height
Permits & access
Permit required — see local rules.
  • Franco-Swiss border river
  • Swiss patent required for Swiss sections, and French rules apply on the French side
  • Do not assume one roaming border permit.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Dessoubre
19 km
Brown trout · Grayling
Reverotte
21 km
Brown trout · Grayling
Doubs (France)
34 km
Brown trout · Grayling · Chub
Cusancin
41 km
Brown trout · Grayling
Les piscicultures Côte
51 km
Rainbow trout
Gallery · 2
  1. The Doubs river winding through a wooded limestone gorge near the Saut du Doubs on the Swiss-French border.
    The Doubs gorge near the Swiss-French border, Neuchâtel
  2. Terrain map of the venue
    Terrain map
About this water

Jura limestone river forming part of the French-Swiss border, exceptional grayling fishing and wild brown trout in chalk stream character water. Clear, alkaline flow with superb hatches. The French side has the Loue—a similar classic across the frontier.

  • Limestone
Water quality (WFD)
  • Ecology: Good
  • Chemical: Unknown
What this classification means

WFD ecological status Moderate → Good corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody FRDR635 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · FRDR635

The full read · show the working · for Grayling · confidence 90%
How the 86 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity75 × 12%9.0
Conditions total= 86
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 March → 30 September
Related guides
Grayling Playbookgrayling tacticsAlpine Streamsmountain entomologyEuro Nymphingsubsurface methods
Booking & contacts