Stoneflies
- Ecology: Good
- Chemical: Unknown
WFD classification · ES030MSPF0452010
Rules at a glance
- Public water
- Licence required
Water temperature for Brown Trout
Cool — slow9°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.
Likely species
Hatch timeline · todayPeak at 11h
Hatch predictions
Today's headline hatch shown — see all 9 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
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 · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
2
3
2
Olive UprightHatch
2
3
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Brown Trout
Permits & access
Permit required — see local rules.
- Comunidad de Madrid fishing licence required
- TPE II has its own access days and mandatory reporting structure, so check the exact TPE conditions rather than using the main Lozoya coto logic.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Horcajo, molino (1988) 01 Terrain map
Water quality (WFD)
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature87 × 28%24.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Conditions total= 81
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Río Lozoya (cotos & tramos)proxy
Prey activitysurvey-backed invertebrate datasurvey
Directions
Seasons & zones
- Trout 2e Sunday de March → 3e Sunday de July
Related guides
Booking & contacts
Río Madarquillos (TPE II)
Water temperature for Brown Trout
Cool — slow9°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.
Likely species
Hatch timeline · todayPeak at 11h
Hatch predictions
Today's headline hatch shown — see all 9 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
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 · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
2
3
2
Olive UprightHatch
2
3
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Brown Trout
Permits & access
Permit required — see local rules.
- Comunidad de Madrid fishing licence required
- TPE II has its own access days and mandatory reporting structure, so check the exact TPE conditions rather than using the main Lozoya coto logic.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Horcajo, molino (1988) 01 Terrain map
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · ES030MSPF0452010
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature87 × 28%24.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Conditions total= 81
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Río Lozoya (cotos & tramos)proxy
Prey activitysurvey-backed invertebrate datasurvey
Directions
Seasons & zones
- Trout 2e Sunday de March → 3e Sunday de July
Related guides
Booking & contacts