Stillwater · Limestone · Aragón, ES

Embalse de Arguis (Río Isuela coto deportivo)

Embalse de Arguis venue image

The most practical fly day from Zaragoza, and honest about what it is: a stocked coto on the Isuela reservoir under the limestone shoulders of the Sierra de Guara, an hour up the road from the city.

Fair · Rainbow
Grasshopper Pattern · 10–14
Fairlive now
Reasonable autumn fishing likely at Embalse de Arguis (Río Isuela coto deportivo)
Good wave on — drift country. A useful wave. Work the productive shore.
56% confidence

This is peak season for Embalse de Arguis (Río Isuela coto deportivo), though today's conditions aren't quite ideal. Worth fishing — the timing is right even if the weather isn't perfect.

What moved it
  • WindS 8 km/hLight breeze · Gusts to 22 km/h
Today's fly
Grasshopper Pattern
Grasshopper Pattern10–14
Proven pattern for this period
Conditions on the water
Estimate
Wind
Light breeze · Gusts to 22 km/h
S 8 km/h
N
S
from the south
WaveRipple
Water temp12.5°C
Air temp12°C
CloudBroken
Pressure1022 hPa
Rain · recent0.0 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

How to fish it · for Rainbow
When
Current conditions suit Embalse de Arguis (Río Isuela coto deportivo) well for autumn tactics. The ripple should help fish move and feed more confidently.
Where
Start with Griffith's Gnat (18–22) on a As per local method. Evening can produce explosive surface takes — try a foam beetle or booby on a long leader. Rainbows respond to more active retrieves — try short strips between pauses.
The plan
Plan A

Start with Griffith's Gnat (18–22) on a As per local method. Evening can produce explosive surface takes — try a foam beetle or booby on a long leader. Rainbows respond to more active retrieves — try short strips between pauses.

Plan B

A fry-imitating pattern stripped through the margins can save a blank in autumn.

Watch for

Keep an eye on changing conditions — wind shifts and cloud breaks can trigger short feeding spells.

Either bank or boat

Good ripple suits both bank and boat. Bank: work inflows, dam walls, and points. Boat: broadside drift covering wind lanes.

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds as a supporter.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 4 as a supporter.

Start free trial

14-day free trial. Cancel anytime.

Through the year
0–3 scale · October 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
Lake OliveHatch
2
3
3
3
3
3
2
Daphnia SwarmHatch
2
3
3
3
2
Silverhorns & LonghornsHatch
1
2
2
2
1

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Rainbow fly box
Permits & access
Permit required — see local rules.
  • Aragón recreational licence plus the Arguis coto deportivo permit
  • Current rules include a single rod, bank-fishing only, restrictions near the dam/pasarela and no general boat fishing — confirm the live coto plan before planning a trip.
What's coming
Plan ahead
5-day outlook
Condition match
88%
Cloud100%
Wind100%
Temp60%

Conditions are ideal for Embalse de Arguis (Río Isuela coto deportivo) — wind, cloud and temperature all line up.

Other water nearby · 5
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

The most practical fly day from Zaragoza, and honest about what it is: a stocked coto on the Isuela reservoir under the limestone shoulders of the Sierra de Guara, an hour up the road from the city. Nobody will mistake it for a wild Pyrenean stream, but a stocked reservoir fished well on a buzzer or a slow nymph is a real day's fishing, and on a spring morning before the heat comes off the rock it can be a good one. Rainbows make up most of the stock; the odd brown turns up. It is the right answer when the mountain rivers are blown out, or simply too far for the hours you have.

  • Reservoir
  • Limestone
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Cloud cover (cloud) suits the fishery well.
Directions
Seasons & zones
  • Trout check current Arguis coto deportivo plan → check current Arguis coto deportivo plan

    Managed coto deportivo on the Isuela reservoir near Huesca: a coto permit is required in addition to the Aragón recreational licence. Dates, daily quotas and bank restrictions are set by the current coto plan, not by the river trout season — confirm before publishing booking-facing copy.

Related guides
Booking & contacts