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.

Good · Brown Trout
Klinkhammer · 14-18
Goodlive now
A proper day on the water
River high but settled. Match the colour and fish the seams.
75% confidence
What moved it
  • Level1.73 m
  • Water temp16.1°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
1.73 m
Water temp16.1°C
ClarityClear
Weather15°C
WindNE 15 km/h
Pressure1025 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

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

Water temperature for brown trout
Warm — slow
16°C est.ideal 10–16°C
0°14°28°
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
Good — water temperature is working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 8 active hatches hour by hour with Pro.

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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
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.

Ranked for today
Brown Trout fly box
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.
What's coming
Plan ahead
5-day outlook
Other water nearby · 4
Río Negro (Zamora)
22 km
Brown trout
Río Aliste
32 km
Brown trout
Río Cabrera
49 km
Brown trout
Órbigo
58 km
Brown trout
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
Water quality (WFD)
  • Ecology: Good
  • Chemical: Unknown

WFD classification · ES020MSPF000000208

The full read · show the working · for brown trout · confidence 75%
How the 79 is built — score × weight = contribution
Temperature98 × 28%27.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity47 × 12%5.6
Conditions total= 78
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
  • TroutLast Sunday of March → 31 July
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts