Spate · Granite · Galicia, ES

Mandeo

Mandeo — Río Mandeo, Betanzos

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

Poor · Brown Trout
Klinkhammer · 14-18
Closed season
Out of season. Plenty of other water available now.
Closed — confidence not applicable today.
What moved it
  • Level1.00 mLast reading 3h ago
  • Water temp21.1°C
  • ClarityClear
Today's fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
1.00 m
Last reading 3h ago
Water temp21.1°C
ClarityClear
Weather21°C
WindNE 22 km/h
Pressure1018 hPa
Rain · recent0.0 mm
Rain · ahead0.0 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
Warm — slow
21°C est.ideal 1016°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
Water at 21.1°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayPeak at 6am

Hatch predictions

Today's headline hatch shown — see all 2 active hatches hour by hour 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
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · August 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
Water here around 21°C. Nothing cooler within range — carry a thermometer.
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.

Hatches & food

In Galicia's Atlantic trout rivers, resident browns feed through a spring build-up of olives and other up-wings into a long summer of caddis and small buzzers, with frequent spates and cool water keeping fish active; terrestrials from lush banks and meadows become important once levels settle and the banks green up.

  • Granite
Water quality (WFD)
  • EcologyGood
  • ChemicalUnknown

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

The full read · show the working · for Brown Trout · confidence 80%
How the 0 is built — score × weight = contribution
Temperature13 × 28%3.6
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time75 × 13%9.8
Pressure80 × 7%5.6
Insect activity52 × 12%6.2
Limiting factor: Water temperature (21.1°C) is outside Brown Trout's preferred range (10–16°C)= 60
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.
Directions
Seasons & zones
  • Sea trout 1 May31 July
  • Trout 1 May31 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
Booking & contacts