Spate · Granite · Castilla y León

Tera

Tera terrain map
Terrain map

The Tera emerges from Lake Sanabria — Spain's largest natural lake — creating a montane river with reliable year-round base flows.

Species

A side-water session, not the main event

Low and clear — careful approach country. Long leader, small flies, slower casts.

55% confidence in this read
Water temperature for brown trout
Cool — slow
6°C est.ideal 10–16°C
0°14°28°
Why this score · for brown trout
  • Temperature2928% weight
  • Flow4022% weight
  • Clarity9518% weight
  • Feeding Time4513% weight
  • Pressure807% weight
  • Prey Activity1612% weight
Conditions
Level
0.42 m
Water temp
5.5°C
Estimated
Clarity
Clear
Air temp
6°C
Wind
NW 11 km/h
Light breeze
Pressure
1016 hPa
Rain · 48h
0.2 mm
No meaningful rain
Rain · ahead
0.6 mm
No meaningful rain · next 48h

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

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.
Why this works
Fair conditions. Clarity is favourable (95), Prey activity is weakest (16).
Through the year
0–3 scale · May highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
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.

Permits & access
Permit required — see local rules.
  • Castilla y León fishing licence required
  • Many premium trout waters use the Junta's tramo-based management system, including EDE sections, so check the exact section and current rules before travel.
Directions
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About this water

The Tera emerges from Lake Sanabria — Spain's largest natural lake — creating a montane river with reliable year-round base flows. Mixed geology (granite, limestone, slate) produces moderate alkalinity and excellent insect productivity supporting strong wild brown populations. More rugged and remote than Leonese counterparts, genuinely wild yet accessible. Sanabria's influence means stable summer conditions and consistent mayfly (B. rhodani, E. notata) and sedge hatches. The 6-hour spate response creates both blind-prospecting and hatch-matching opportunities. The 68km offers wilderness fishing: small, selective upper reaches; productive middle pools; lower stretches with larger browns and occasional trout.

  • Granite
Seasons & zones
  • TroutLast Sunday of March → 31 July
Other water nearby · 1
Booking & contacts