- Ecology: Good
- Chemical: Unknown
WFD classification · ES014MSPFES-014-NR-111-025-02-02
Rules at a glance
- Public water
- Licence required
Water temperature for Brown Trout
Warm — slow18°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.
Hatch timeline · todayPeak at 6am
Hatch predictions
Today's headline hatch shown — see all 9 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 with Pro.
Start free trial14-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
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
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
Gallery · 2
Río Mandeo, Betanzos Terrain map
Water quality (WFD)
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature54 × 28%15.1
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity64 × 12%7.7
Conditions total= 74
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 May → 31 July
- Trout 1 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
Booking & contacts
Mandeo
Water temperature for Brown Trout
Warm — slow18°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.
Hatch timeline · todayPeak at 6am
Hatch predictions
Today's headline hatch shown — see all 9 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 with Pro.
Start free trial14-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
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
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
Gallery · 2
Río Mandeo, Betanzos Terrain map
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 90%
How the 0 is built — score × weight = contribution
Temperature54 × 28%15.1
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity64 × 12%7.7
Conditions total= 74
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 May → 31 July
- Trout 1 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
Booking & contacts