- Public water
- Licence required
Gammarids
Hatch predictions
Today's headline hatch shown — see all 10 active hatches hour by hour as a supporter.
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Hatch predictions
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Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Beat detail
- Asturian fishing licence required
- Check local cotos for trout regulations.
The central valley of Asturias is quite industrial but still has some mighty rivers 
Rio Caudal, wide and fairly shallow with trout and lots of Spanish chub Terrain map
The full read · show the working · for Brown Trout · confidence 90%
- Trout Dritter Sunday im May → 15 August
The Caudal joins the Nalón at Ujo/Mieres, well above Puente Peñaflor (Grado) — the Nalón's salmon-zone limit — so the whole Caudal system sits in the mountain-zone tributary network. 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.
- Pesca Fluvial Asturias — Permisos & Sorteo de CotosPermit information and the annual coto lottery (sorteo anual) for salmon, trout and reo. Run by the Principado de Asturias, not the Federación — the previous entry credited the Federación Asturiana de Pesca and pointed at fedpesca.com, which no longer resolves. The Federación does still exist, at asturianadepesca.com, but it is not the permit-allocation authority.
- Sede Asturias — Permisos de PescaAsturian fishing licence and salmon coto permits (sorteo lottery system)
Río Caudal
Hatch predictions
Today's headline hatch shown — see all 10 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Beat detail
- Asturian fishing licence required
- Check local cotos for trout regulations.
The central valley of Asturias is quite industrial but still has some mighty rivers Rio Caudal, wide and fairly shallow with trout and lots of Spanish chub Terrain map
The full read · show the working · for Brown Trout · confidence 90%
- Trout Dritter Sunday im May → 15 August
The Caudal joins the Nalón at Ujo/Mieres, well above Puente Peñaflor (Grado) — the Nalón's salmon-zone limit — so the whole Caudal system sits in the mountain-zone tributary network. 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.
- Pesca Fluvial Asturias — Permisos & Sorteo de CotosPermit information and the annual coto lottery (sorteo anual) for salmon, trout and reo. Run by the Principado de Asturias, not the Federación — the previous entry credited the Federación Asturiana de Pesca and pointed at fedpesca.com, which no longer resolves. The Federación does still exist, at asturianadepesca.com, but it is not the permit-allocation authority.
- Sede Asturias — Permisos de PescaAsturian fishing licence and salmon coto permits (sorteo lottery system)