Spate · Granite · Galicia

Mandeo

Mandeo — Río Mandeo, Betanzos
Contributor photo

Río Mandeo, Betanzos

Dani_vr (https://www.flickr.com/photos/32524114@N07) - CC BY-SA

A compact, highly responsive heritage salmon river near Betanzos where salmon are now depleted and out of bounds.

Good · Brown Trout
Klinkhammer · 14-18
Goodlive now
A proper day on the water
River steady at a fishable height. A proper day for it. Work the seams with an upstream nymph, switch to the dry when they show.
75% confidence
What moved it
  • Level1.03 mLast reading 1h ago
  • Water temp16.7°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
1.03 m
Last reading 1h ago
Water temp16.7°C
ClarityClear
Weather15°C
WindSE 4 km/h
Pressure1019 hPa
Rain · recent0.3 mm
Rain · ahead4.5 mm

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

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
Trout season 1 May to 31 July. Spring olives and sedges through May; summer evenings into July. The Mandeo responds quickly to rain — fish 6 to 12 hours after a spate.
Where
Compact granite spate river through the Betanzos hinterland. Pool tails, riffle heads, and pocket water through the upper reaches.
Method
Upstream dry to risers; dry-dropper through the riffles. The Mandeo is small intimate water — short casts, careful approach, fish each lie before moving on.
Kit
9 ft #4. Floating line, 9 to 12 ft leader to 4 lb fluoro. Studded boots — granite is slick.
Why this works
Good — water clarity is working for you, but time of day is the limiting factor today.
Hatch timeline · todayPeak at 6pm

Hatch predictions

Today's headline hatch shown — see all 6 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey

Hatch predictions

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Evidence
Records-basedModerate confidence

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

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Sea trout runRun
1
2
1
Trout seasonSeason
1
2
1
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
2
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.
  • Galician fishing licence required
  • Additional coto or tramo permit may be needed depending on the beat
  • Check current Xunta rules before travel; salmon heritage does not make salmon a legal target.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Río Mendo
9.0 km
69
Brown trout
Eume
12 km
79
Brown trout · Sea trout
Río Mero
16 km
69
Brown trout · Sea trout
Río Belelle
33 km
Brown trout
Río Furelos
34 km
36
Brown trout
Gallery · 2
  1. Mandeo — Río Mandeo, Betanzos
    Río Mandeo, Betanzos
  2. Terrain map of the venue
    Terrain map
About this water

A compact, highly responsive heritage salmon river near Betanzos where salmon are now depleted and out of bounds. Smaller than the Ulla or Tambre, it still offers concentrated trout-and-sea-trout fishing, especially after rain, with a quick 5-hour response that can create short but worthwhile windows. Sea trout in the lower river and estuary now make more practical sense than any salmon-led framing.

  • Granite
Water quality (WFD)
  • Ecology: Good
  • Chemical: Unknown

WFD classification · ES014MSPFES-014-NR-111-025-02-02

The full read · show the working · for brown trout · confidence 75%
How the 75 is built — score × weight = contribution
Temperature83 × 28%23.2
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity49 × 12%5.9
Conditions total= 75
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Sea trout1 May → 31 July
  • Trout1 May → 31 July

Sea trout: Variable seasonal (2026) — Reo present in the lower Mandeo and estuary. Salmon depleted and prohibited. Sea trout are a residual fishery — occasional, water-dependent, not a promoted primary species.

Salmon: Heritage only (2026) — Salmon fishing banned in Galicia by 2026 Xunta decree. Heritage salmon river — not a salmon fishing destination.

Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts