Cuerda del Pozo is the big inland sea of Soria — pine forest on every shore, the Sierra de Urbión behind, and the young Duero filling it cold off the granite. The locals sail and swim here, and on a hot Castilian afternoon you can see why. For the fly fisher it is warm-water sight-fishing country: carp cruise the shallow bays and the flats, and a beetle or a slow nymph dropped ahead of a feeding fish is the whole game. It is run as special-regime water so you can fish it from a boat, which opens up the points and the drowned river bends. There are pike and zander in here as well — both non-native, both with their own rules — but the carp on a warm, bright day are reason enough to come.
Summer carp — prime fly-fishing conditions
Good wave on — drift country. Drift fishing weather — three flies on a long leader.
Carp are highly active in warm water, feeding confidently on the surface and in the shallows. This is the golden window for fly fishing — visible fish, aggressive feeding, surface takes. Dawn and dusk are magic.
68% confidence in this read
Live now
Conditions on the water
Trends shown where the gauge supports them
Wind
SW 12 km/h
Light breeze
Wave
20 cm ripple
Water temp
—
No reading
Air temp
16°C
Cloud
Broken
Pressure
1015 hPa
Rain · 24h
0.0 mm
No rain
Some readings unavailable — check directly before fishing.
How to fish · for carp
The brief
When · where · method · kit
How to fish it · for carp
When
Carp are highly active in warm water, feeding confidently on the surface and in the shallows. This is the golden window for fly fishing — visible fish, aggressive feeding, surface takes. Dawn and dusk are magic.
Where
Peak season for carp on the fly. Early mornings and evenings are best — carp cruise the margins, surface-feed, and tail in shallows. This is pure sight-fishing: walk, spot, stalk, cast. Keep low, tread softly, wear drab clothing. 5-6wt rod, 15ft fluorocarbon leader for sub-surface; floating line for surface. Have both a bread fly and a nymph rigged and ready.
Today's tactical plan
The plan
Plan A · Plan B · what to watch · bank or boat
The plan
Plan A
Peak season for carp on the fly. Early mornings and evenings are best — carp cruise the margins, surface-feed, and tail in shallows. This is pure sight-fishing: walk, spot, stalk, cast. Keep low, tread softly, wear drab clothing. 5-6wt rod, 15ft fluorocarbon leader for sub-surface; floating line for surface. Have both a bread fly and a nymph rigged and ready.
Plan B
If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.
Watch for
Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.
Boat — drift
A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.
Hatches & runs
What's on, when
Twelve months at a glance
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Gray DrakeHatch
2
2
Silverhorns & LonghornsHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Today's fly · curated pack
Top pattern + the box
6 patterns from this venue's curated pack
Evidence
Why today scores what it does
The factors driving today's verdict
Why this score
- Wind conditions (ripple) closely match what this water fishes best in.
About this water · Lough note · 4 min read
Embalse de la Cuerda del Pozo · profile
Who this water suits
Strengths · watch-outs · best for
About this water
Embalse de la Cuerda del Pozo, on the water
Field guide · contributor-editedEmbalse de la Cuerda del Pozo · about
What this water is
Background · character · contributors
About this water
Cuerda del Pozo is the big inland sea of Soria — pine forest on every shore, the Sierra de Urbión behind, and the young Duero filling it cold off the granite. The locals sail and swim here, and on a hot Castilian afternoon you can see why. For the fly fisher it is warm-water sight-fishing country: carp cruise the shallow bays and the flats, and a beetle or a slow nymph dropped ahead of a feeding fish is the whole game. It is run as special-regime water so you can fish it from a boat, which opens up the points and the drowned river bends. There are pike and zander in here as well — both non-native, both with their own rules — but the carp on a warm, bright day are reason enough to come.
- Reservoir
- Granite
Embalse de la Cuerda del Pozo · directions
How to get to the water
Directions
Embalse de la Cuerda del Pozo · permits
Good to know
Permits & access
Permit required — see local rules.
- Castilla y León licence required (Confederación Hidrográfica del Duero)
- Special-regime water — boat fishing permitted with the corresponding navigation permit
- Zander and pike are non-native predators with specific handling rules; check the annual order
- Reservoir is currently free of wels catfish.
Embalse de la Cuerda del Pozo
Terrain map
Cuerda del Pozo is the big inland sea of Soria — pine forest on every shore, the Sierra de Urbión behind, and the young Duero filling it cold off the granite.
Species
Summer carp — prime fly-fishing conditions
Good wave on — drift country. Drift fishing weather — three flies on a long leader.
Carp are highly active in warm water, feeding confidently on the surface and in the shallows. This is the golden window for fly fishing — visible fish, aggressive feeding, surface takes. Dawn and dusk are magic.
68% confidence in this read
Conditions
Wind
SW 12 km/h
Light breeze
Wave
20 cm ripple
Water temp
—
No reading
Air temp
16°C
Cloud
Broken
Pressure
1015 hPa
Rain · 24h
0.0 mm
No rain
Some readings unavailable — check directly before fishing.
Condition match
79%
Cloud70%
Wind100%
Temp60%
A good match for this venue — most conditions are close to what it fishes best in.
Reservoir levelas of 1 Jun
┄ 82% 10-yr norm
▬ Steady
83% full
About normal
▲+1 ptsvs seasonal norm
▼-8 ptsvs last year
▼-1 ptsthis week
How to fish it · for carp
When
Carp are highly active in warm water, feeding confidently on the surface and in the shallows. This is the golden window for fly fishing — visible fish, aggressive feeding, surface takes. Dawn and dusk are magic.
Where
Peak season for carp on the fly. Early mornings and evenings are best — carp cruise the margins, surface-feed, and tail in shallows. This is pure sight-fishing: walk, spot, stalk, cast. Keep low, tread softly, wear drab clothing. 5-6wt rod, 15ft fluorocarbon leader for sub-surface; floating line for surface. Have both a bread fly and a nymph rigged and ready.
The plan
Plan A
Peak season for carp on the fly. Early mornings and evenings are best — carp cruise the margins, surface-feed, and tail in shallows. This is pure sight-fishing: walk, spot, stalk, cast. Keep low, tread softly, wear drab clothing. 5-6wt rod, 15ft fluorocarbon leader for sub-surface; floating line for surface. Have both a bread fly and a nymph rigged and ready.
Plan B
If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.
Watch for
Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.
Boat — drift
A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.
Why this score
- Wind conditions (ripple) closely match what this water fishes best in.
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Gray DrakeHatch
2
2
Silverhorns & LonghornsHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Permits & access
Permit required — see local rules.
- Castilla y León licence required (Confederación Hidrográfica del Duero)
- Special-regime water — boat fishing permitted with the corresponding navigation permit
- Zander and pike are non-native predators with specific handling rules; check the annual order
- Reservoir is currently free of wels catfish.
Directions
About this water
Cuerda del Pozo is the big inland sea of Soria — pine forest on every shore, the Sierra de Urbión behind, and the young Duero filling it cold off the granite. The locals sail and swim here, and on a hot Castilian afternoon you can see why. For the fly fisher it is warm-water sight-fishing country: carp cruise the shallow bays and the flats, and a beetle or a slow nymph dropped ahead of a feeding fish is the whole game. It is run as special-regime water so you can fish it from a boat, which opens up the points and the drowned river bends. There are pike and zander in here as well — both non-native, both with their own rules — but the carp on a warm, bright day are reason enough to come.
- Reservoir
- Granite
About this water · Lough note · 4 min read
Cuerda del Pozo is the big inland sea of Soria — pine forest on every shore, the Sierra de Urbión behind, and the young Duero filling it cold off the granite. The locals sail and swim here, and on a hot Castilian afternoon you can see why. For the fly fisher it is warm-water sight-fishing country: carp cruise the shallow bays and the flats, and a beetle or a slow nymph dropped ahead of a feeding fish is the whole game. It is run as special-regime water so you can fish it from a boat, which opens up the points and the drowned river bends. There are pike and zander in here as well — both non-native, both with their own rules — but the carp on a warm, bright day are reason enough to come.
Other water nearby · 5