Stoneflies
Gammarids
Distinct from the Devon Mole. Mixed-use river — light trout interest on cleaner reaches around Dorking and Mickleham, otherwise coarse-fishing identity. Mostly private and club water.
- Mixed
Rules at a glance
- Fly only
Water temperature for Brown Trout
Cool — slow10°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 · tomorrowPeak at 12pm
12pm(now) — Autumn Olive
Stage: On emergersApproach: Emerger or dryActivity: 44%
Also:Autumn Needle Fly35%Black Midge29%
Peak emergence window6 food groups active
Peak activity at 12pm — Autumn Olive (Autumn Olive, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 as a supporter.
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 · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Daddy Long LegsHatch
2
3
3
2
CapererHatch
2
3
3
2
Hawthorn FlyHatch
2
2
GrannomHatch
2
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
The heartland of English dry fly fishing. Upstream dry fly and emerger presentation dominates. Nymphing restricted or discouraged on many beats. Gin-clear alkaline water, prolific weed growth, educated wild brown trout. Precise imitation and delicate presentation are paramount.
Permits & access
Permit required — see local rules.
- Private / coarse club.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Rail bridge over River Mole Terrain map
About this water
Water quality (WFD)
- Ecology: Moderate
Water quality details
- Dissolved oxygen: Good
- Ammonia (Phys-Chem): Poor
- pH: High
- Phosphate: Poor
- Temperature: High
EA (England) · GB106039017625
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature94 × 28%26.3
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity60 × 12%7.2
Conditions total= 82
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 1 April → 30 September
Related guides
Casting instructors near here
Booking & contacts
Boards & regulators
River Mole (Surrey)
The Surrey Mole runs from Crawley through Horley, Dorking, Leatherhead and Esher to join the Thames at Hampton.
Water temperature for Brown Trout
Cool — slow10°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 · tomorrowPeak at 12pm
12pm(now) — Autumn Olive
Stage: On emergersApproach: Emerger or dryActivity: 44%
Also:Autumn Needle Fly35%Black Midge29%
Peak emergence window6 food groups active
Peak activity at 12pm — Autumn Olive (Autumn Olive, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 3 as a supporter.
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 · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Daddy Long LegsHatch
2
3
3
2
CapererHatch
2
3
3
2
Hawthorn FlyHatch
2
2
GrannomHatch
2
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
The heartland of English dry fly fishing. Upstream dry fly and emerger presentation dominates. Nymphing restricted or discouraged on many beats. Gin-clear alkaline water, prolific weed growth, educated wild brown trout. Precise imitation and delicate presentation are paramount.
Permits & access
Permit required — see local rules.
- Private / coarse club.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Rail bridge over River Mole Terrain map
About this water
Distinct from the Devon Mole. Mixed-use river — light trout interest on cleaner reaches around Dorking and Mickleham, otherwise coarse-fishing identity. Mostly private and club water.
- Mixed
Water quality (WFD)
- Ecology: Moderate
Water quality details
- Dissolved oxygen: Good
- Ammonia (Phys-Chem): Poor
- pH: High
- Phosphate: Poor
- Temperature: High
EA (England) · GB106039017625
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature94 × 28%26.3
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity60 × 12%7.2
Conditions total= 82
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 1 April → 30 September
Related guides
Casting instructors near here
Booking & contacts
Boards & regulators
At a glance
River Mole (Surrey) is a river in Surrey, England. It sits at about 62 m above sea level. The river is described as roughly 80 km long. The species listed for this water is brown trout. The trout season is recorded as running from 1 April to 30 September. Best window recorded for anglers: April–June for the cleaner reaches. Core methods listed: dry fly; nymph. Level and flow data for this water is linked from the gauge “Stafford Bridge Ifield (3209TH, upper) + Gatwick Airport Charlwood (3210TH) + Horley (3230TH) + Kinnersley Manor Sidlow (3240TH) + Dorking (3270TH) + Leatherhead (3280TH) + Downside Bridge Stoke d'Abernon (3286TH) + Esher (3290TH, lower, near Thames confluence)”. Its Water Framework Directive ecological status is recorded as moderate. Nearby waters in our listings include Albury Estate Fisheries at 16 km, Coltsford Mill Trout Fishery at 18 km and River Wandle at 20 km.