Spate · Schist Metamorphic · Andalucía / Granada (Sierra Nevada / Alpujarras)

Río Trevélez

The Trevélez drains the Sierra Nevada and the Alpujarras, rising above 1,700 metres to become the highest trout river in mainland Spain.

Damian Rafferty

Warm — handle with careBrown Trout are stressed by warm water — handle every fish carefully.

Water estimated at about 22°C from air temperature — there is no water-temp gauge here, so treat the figure as a guide. Above 18°C, the risk of killing a released fish climbs. Fish dawn or dusk only — the water can be two or three degrees cooler at first light. Barbless hooks. Land it fast — under thirty seconds. Wet hands. No air shots. If a fish swims off slowly or rolls, stop fishing for the day.

DepthShaded riffles, deep pools, spring inflows, cold tributary mouths. Work them and move on.
TimingDawn and dusk only. Avoid the middle of the day — the water peaks then and the fish are most stressed.

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.

80% confidence

Notify when prime

What moved it

Level0.12 mLast reading 15h ago
Water temp21.9°C
ClarityClear

Today’s fly

Foam Beetle14-18

Proven pattern for this period

Live now

Conditions on the water

Live gauge

Trends shown where the gauge supports them

Level

Steady

0.12 m

Last reading 15h ago

Water temp

21.9°C

coldwarm

Clarity

Clear

Weather

27°C

Broken

Wind

S 14 km/h

calmblown out

Pressure

1021 hPa

lowhigh

Rain · recent

0.0 mm

dryspate risk

Rain · ahead

0.4 mm

dryspate risk

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 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

⚠️ Water at 21.9°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise very poor — water clarity is in the right range.

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

Hatch predictions

Top prey shown — see all 2 with Pro.

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14-day free trial. Cancel anytime.

Evidence

Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Through the year

0–3 scale · July highlighted

Trout season

March Brown

Grannom

Large Stonefly

Yellow Sally

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.

Se requiere licencia de la Junta de Andalucía
En las cabeceras de Sierra Nevada / Alpujarras, confirma el tramo abierto exacto, el estado del coto y cualquier restricción del Parque Nacional o local antes de viajar.

What's coming

Plan ahead

5-day outlook

Water here around 22°C. Nothing cooler within range — carry a thermometer.

Gallery · 3

Terrain map

About this water

The Trevélez drains the Sierra Nevada and the Alpujarras, rising above 1,700 metres to become the highest trout river in mainland Spain. Snow-fed metamorphic geology (schist/phyllite), steep pocket water, and a compressed post-snowmelt season make it fundamentally different from the Cazorla limestone cotos down in Jaén. June is usually the core month, with May and July as shoulders depending on snowpack — a much shorter, sharper window than the longer warm season on the Jaén limestone rivers.

Schist metamorphic

Water quality (WFD)

Ecology: Good
Chemical: Unknown

WFD classification · ES060MSPF0632040

The full read · show the working · for brown trout · confidence 80%

How the 14 is built — score × weight = contribution

Temperature7 × 28%2.0

Flow80 × 22%17.6

Clarity95 × 18%17.1

Feeding Time55 × 13%7.2

Pressure80 × 7%5.6

Insect activity51 × 12%6.1

Limiting factor: Water temperature (21.9°C) is outside Brown Trout's preferred range (10–16°C)= 56

Can you trust it?

Water temperatureair-to-water estimateestimated

Level / flowon-river gaugeobserved

Prey activitymodelled from regional profilemodelled

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

Apple Maps Google Maps

Seasons & zones

TroutMay shoulder / June core window (practical) → July shoulder, conditions permitting

Related guides

Booking & contacts

Spate · Schist Metamorphic · Andalucía / Granada (Sierra Nevada / Alpujarras)

Río Trevélez

Editorial photo

Damian Rafferty

The Trevélez drains the Sierra Nevada and the Alpujarras, rising above 1,700 metres to become the highest trout river in mainland Spain.

Poor · Brown Trout

Foam Beetle · 14-18

Warm — handle with careBrown Trout are stressed by warm water — handle every fish carefully.

DepthShaded riffles, deep pools, spring inflows, cold tributary mouths. Work them and move on.
TimingDawn and dusk only. Avoid the middle of the day — the water peaks then and the fish are most stressed.

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.

80% confidence

Notify when prime

What moved it

Level0.12 mLast reading 15h ago
Water temp21.9°C
ClarityClear

Today’s fly

Foam Beetle14-18

Proven pattern for this period

Conditions on the water

Live gauge

Level

Steady

0.12 m

Last reading 15h ago

Water temp21.9°C

ClarityClear

Weather27°C

WindS 14 km/h

Pressure1021 hPa

Rain · recent0.0 mm

Rain · ahead0.4 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 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

⚠️ Water at 21.9°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise very poor — water clarity is in the right range.

Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read with Pro.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

Start free trial

14-day free trial. Cancel anytime.

Evidence

Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Through the year

0–3 scale · July highlighted

Trout season

March Brown

Grannom

Large Stonefly

Yellow Sally

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.

Se requiere licencia de la Junta de Andalucía
En las cabeceras de Sierra Nevada / Alpujarras, confirma el tramo abierto exacto, el estado del coto y cualquier restricción del Parque Nacional o local antes de viajar.

What's coming

Plan ahead

5-day outlook

Water here around 22°C. Nothing cooler within range — carry a thermometer.

Gallery · 3

Terrain map

About this water

Schist metamorphic

Water quality (WFD)

Ecology: Good
Chemical: Unknown

WFD classification · ES060MSPF0632040

The full read · show the working · for brown trout · confidence 80%

How the 14 is built — score × weight = contribution

Temperature7 × 28%2.0

Flow80 × 22%17.6

Clarity95 × 18%17.1

Feeding Time55 × 13%7.2

Pressure80 × 7%5.6

Insect activity51 × 12%6.1

Limiting factor: Water temperature (21.9°C) is outside Brown Trout's preferred range (10–16°C)= 56

Can you trust it?

Water temperatureair-to-water estimateestimated

Level / flowon-river gaugeobserved

Prey activitymodelled from regional profilemodelled

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

Apple Maps Google Maps

Seasons & zones

TroutMay shoulder / June core window (practical) → July shoulder, conditions permitting

Booking & contacts