Karst · Limestone · Burgundy / Côte-d'Or, FR

Armançon (Upper Trout Reach)

Armançon (Upper Trout Reach) — Armançon Nuits
Prime · Brown Trout
Pheasant Tail Nymph · 14-18
New ruleReported 3 Aug 2026

Severe drought restrictions (alerte renforcée) in force

A préfectoral drought order places this catchment's surface water at alerte renforcée, the second-highest of France's four restriction tiers. Fishing itself is not named in the order, but flows are low and water-use restrictions are in force. Zone: Armançon amont (dépt 21).

Arrêté préfectoral n°37578 ↗

Temporary notices from official orders and recent fishery reports — they clear automatically once out of date.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

Primelive now
About as good as it gets
Low and clear — careful approach country. Take your time — read the water before you cast.
90% confidence
What moved it
  • LevelProxyvia Loue
  • Water temp16.5°C
  • ClarityClear
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
Upstream
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Loue
Water temp16.5°C
ClarityClear
Weather17°C
WindS 20 km/h
Pressure1017 hPa
Rain · recent27.6 mm
Rain · ahead1.6 mm

No gauge on this water — conditions are inferred from Loue. The trend transfers, the absolute level does not.

Water temperature for Brown Trout
Warm — slow
17°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.
Why this works
Excellent — water clarity is right today, though insect activity could be better.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read with Pro.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 4 with Pro.

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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 · 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
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Brown SedgeHatch
2
3
3
3
2
Small SpurwingHatch
2
3
3
3
2
Small Dark OliveHatch
2
3
3
3
2

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 Montbard / Semur-en-Auxois
  • Standard 1ère catégorie.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Serein
32 km
77
Brown trout · Grayling
Cousin
48 km
Brown trout
Pisciculture des Truites de l'Aube
49 km
Rainbow trout · Brown trout · Char
Pisciculture Moulin Tala
55 km
Rainbow trout
Pisciculture Cordier-Gand
58 km
Rainbow trout · Brown trout
Gallery · 2
  1. Armançon (Upper Trout Reach) — Armançon Nuits
    Armançon Nuits
  2. Terrain map of the venue
    Terrain map
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Good
What this classification means

WFD chemical status Failing to achieve good → Good corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody FRHR61C (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.

WFD classification · FRHR61C

The full read · show the working · for Brown Trout · confidence 90%
How the 81 is built — score × weight = contribution
Temperature82 × 28%23.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity63 × 12%7.6
Conditions total= 81
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Loueproxy
Prey activitysurvey-backed invertebrate datasurvey
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 2nd Saturday of March → 3rd Sunday of September
  • Grayling 3rd Saturday of May → 31 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
Grayling Playbookgrayling tacticsPyrenees PlaybookFrench riversEuro Nymphingsubsurface methods
Booking & contacts