Spate · Mixed · Asturias, Spain

Río Riosa

Casa en Riosa

jlmaral - CC BY-SA

Closed season

Out of season. Plenty of other water available now.

Closed — confidence not applicable today.

Notify when prime

What moved it

Level0.36 mLast reading 23h ago
Water temp13.4°C
ClarityClear

Today's fly

Ignita CDC16-20

Upstream dry, on top

Rules at a glance

Public water
Licence required

Live now

Conditions on the water

Live gauge

Trends shown where the gauge supports them

Level

Steady

0.36 m

Last reading 23h ago

Water temp

13.4°C

coldwarm

Clarity

Clear

Weather

12°C

Mostly cloudy

Wind

S 16 km/h

calmblown out

Pressure

1016 hPa

lowhigh

Rain · recent

0.5 mm

dryspate risk

Rain · ahead

9.0 mm

dryspate risk

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

Water temperature for Brown Trout

Ideal

13°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.

Hatch timeline · todayPeak at 6am

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

Top nymph shown — see all 2 guilds with Pro.

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14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

See what else is on the menu 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

Trout season

March Brown

Late March Brown

Large Brook Dun

Large Stonefly

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

Ranked for today

Brown Trout fly box

Beats · 1

Riosa · 0.5 kmC&R trout

C&R trout stretch — Puente Bº La Ará Cta A-231 General to Puente pasarela aguas abajo del polideportivo.

Beat detail

Daily permit required, all fish returned

Upstream: Puente Bº La Ará Cta A-231 General

Downstream: Puente pasarela aguas abajo del polideportivo

Permits & access

Free state water

State rod licence required for trout / salmon as applicable.

Asturian fishing licence required.

What's coming

Plan ahead

5-day outlook

Other water nearby · 5

Gallery · 2

Casa en Riosa
Terrain map

The full read · show the working · for Brown Trout · confidence 90%

How the 0 is built — score × weight = contribution

Temperature100 × 28%28.0

Flow80 × 22%17.6

Clarity95 × 18%17.1

Feeding Time80 × 13%10.4

Pressure80 × 7%5.6

Insect activity60 × 12%7.2

Conditions total= 86

Can you trust it?

Water temperatureair-to-water estimateestimated

Level / flowon-river gaugeobserved

Prey activitysurvey-backed invertebrate datasurvey

Directions

Apple Maps Google Maps

Seasons & zones

Trout Third Sunday of May → 15 August
The Riosa joins the Nalón above Puente Peñaflor (Grado) — the Nalón's salmon-zone limit — so it sits in the mountain-zone tributary network rather than the general lowland default. Mountain-zone trout (zona de alta montaña): opens Third Sunday of May, not the general 15 March, minimum size 17cm (vs. 19cm general). Asturian regulation classifies any tributary joining above a salmon river's designated zone-limit point as alta montaña water. Inferred here from confluence position, not a verified lookup against the official cotos map (pescafluvial.asturias.es) — confirm before treating as final.

Related guides

Booking & contacts

Permits & access

Other

Spate · Mixed · Asturias, Spain

Río Riosa

Name: Río Riosa
Address: Asturias, Spain

Contributor photo

Casa en Riosa

jlmaral - CC BY-SA

Poor · Brown Trout

Ignita CDC · 16-20

Closed season

Out of season. Plenty of other water available now.

Closed — confidence not applicable today.

Notify when prime

What moved it

Level0.36 mLast reading 23h ago
Water temp13.4°C
ClarityClear

Today's fly

Ignita CDC16-20

Upstream dry, on top

Conditions on the water

Live gauge

Level

Steady

0.36 m

Last reading 23h ago

Water temp13.4°C

ClarityClear

Weather12°C

WindS 16 km/h

Pressure1016 hPa

Rain · recent0.5 mm

Rain · ahead9.0 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

Ideal

13°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.

Hatch timeline · todayPeak at 6am

Hatch predictions

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

Start free trial

14-day free trial. Cancel anytime.

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds with Pro.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

See what else is on the menu with Pro.

Start free trial

14-day free trial. Cancel anytime.

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

Trout season

March Brown

Late March Brown

Large Brook Dun

Large Stonefly

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

Ranked for today

Brown Trout fly box

Beats · 1

Riosa · 0.5 kmC&R trout

C&R trout stretch — Puente Bº La Ará Cta A-231 General to Puente pasarela aguas abajo del polideportivo.

Beat detail

Daily permit required, all fish returned

Upstream: Puente Bº La Ará Cta A-231 General

Downstream: Puente pasarela aguas abajo del polideportivo

Permits & access

Free state water

State rod licence required for trout / salmon as applicable.

Asturian fishing licence required.

What's coming

Plan ahead

5-day outlook

Other water nearby · 5

Brown trout · Sea trout

Río Caudal

9.0 km

Brown trout

Embalse de los Alfilorios

Brown trout · Salmon · Sea trout

Gallery · 2

Casa en Riosa
Terrain map

The full read · show the working · for Brown Trout · confidence 90%

How the 0 is built — score × weight = contribution

Temperature100 × 28%28.0

Flow80 × 22%17.6

Clarity95 × 18%17.1

Feeding Time80 × 13%10.4

Pressure80 × 7%5.6

Insect activity60 × 12%7.2

Conditions total= 86

Can you trust it?

Water temperatureair-to-water estimateestimated

Level / flowon-river gaugeobserved

Prey activitysurvey-backed invertebrate datasurvey

Directions

Apple Maps Google Maps

Seasons & zones

Trout Third Sunday of May → 15 August
The Riosa joins the Nalón above Puente Peñaflor (Grado) — the Nalón's salmon-zone limit — so it sits in the mountain-zone tributary network rather than the general lowland default. Mountain-zone trout (zona de alta montaña): opens Third Sunday of May, not the general 15 March, minimum size 17cm (vs. 19cm general). Asturian regulation classifies any tributary joining above a salmon river's designated zone-limit point as alta montaña water. Inferred here from confluence position, not a verified lookup against the official cotos map (pescafluvial.asturias.es) — confirm before treating as final.

Booking & contacts

Permits & access

Other