Freestone · Granite · Aveyron / Lozère

Lot (Upper)

Lot (Upper) terrain map
Terrain map

The upper Lot rises on the Aubrac plateau and works its way south-west through rolling granite country before the broader river takes over below Entraygues.

Poor · Brown Trout
CDC Emerger · 16-18
Poorlive now
Not the day for it
River steady at a fishable height. Take your time — read the water before you cast.
90% confidence
What moved it
  • Level0.71 mLast reading 14h ago
  • Water temp22.3°C
  • ClarityClear
Today’s fly
CDC Emerger
CDC Emerger16-18
Dead-drift
Conditions on the water
Live gauge
Level
Steady
0.71 m
Last reading 14h ago
Water temp22.3°C
ClarityClear
Weather30°C
WindNW 13 km/h
Pressure1021 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for brown trout
Warm — slow
22°C est.ideal 1016°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
⛔ Water at 22.3°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 4 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
1
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
GrannomHatch
1
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.
  • AAPPMA permits.
What's coming
Plan ahead
5-day outlook
Water here around 22°C. Nothing cooler within range — carry a thermometer.
About this water

The upper Lot rises on the Aubrac plateau and works its way south-west through rolling granite country before the broader river takes over below Entraygues. The headwater and upper-middle sections are proper freestone trout water: wild brown trout and grayling in clear runs between riffles and pocket water, good olive and caddis hatches, and enough quiet to make the fishing feel like its own reward. The Aubrac gives it a particular character — cold water off the high ground, responsive flow after the frequent plateau storms, and a short snowmelt bump that shapes the early season. Standard upstream dry-fly work in the slower glides, tight-line nymphing in the faster runs. From about May onwards the fishing is consistent through to September, with the grayling extending the season into October in the deeper pools.

  • Granite
Water quality (WFD)
  • EcologyGood
  • ChemicalUnknown

WFD classification · FRFR127

The full read · show the working · for brown trout · confidence 90%
How the 10 is built — score × weight = contribution
Temperature5 × 28%1.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity47 × 12%5.6
Limiting factor: Water temperature (22.3°C) is outside Brown Trout's preferred range (10–16°C)= 55
Can you trust it?
Water temperatureair-to-water estimateestimated
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 → 3rd Sunday of September
Related guides
Booking & contacts