A chalk-influenced Hertfordshire fishery near Redbourn — spring-fed lakes with good clarity. Stocked rainbows. Accessible from London and the Home Counties. Day tickets.
- Fishery
- Chalk
How to fish it · for Rainbow
When
Year-round
Where
Start with Diawl Bach (12-14) — on the bob / top dropper — slow figure-of-eight retrieve. Midday in warm weather — switch to a fast-sink or Di-7 and fish boobies or blobs along the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
The plan
Plan A
Start with Diawl Bach (12-14) — on the bob / top dropper — slow figure-of-eight retrieve. Midday in warm weather — switch to a fast-sink or Di-7 and fish boobies or blobs along the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
Plan B
Fish early and late, try deeper during the heat of the day with a fast-sinking line.
Watch for
Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.
Bank
Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 5 with Pro.
Start free trial14-day free trial. Cancel anytime.
Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Daphnia SwarmHatch
2
3
3
3
2
Daddy Long LegsHatch
2
3
2
Lake OliveHatch
2
3
3
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
What's coming
Plan ahead
5-day outlook
Condition match
27%
Cloud25%
Wind30%
Temp25%
Tough conditions for Redbournbury Fishery — expect slower sport and consider adapting your approach.
Other water nearby · 5
About this water
Why this score
- Wind conditions (breezy) are not ideal for this water.
Directions
Seasons & zones
- Trout 1 April → 30 September
Related guides
Casting instructors near here
Booking & contacts
Permits & access
Clubs & associations
Redbournbury Fishery
A chalk-influenced Hertfordshire fishery near Redbourn — spring-fed lakes with good clarity.
How to fish it · for Rainbow
When
Year-round
Where
Start with Diawl Bach (12-14) — on the bob / top dropper — slow figure-of-eight retrieve. Midday in warm weather — switch to a fast-sink or Di-7 and fish boobies or blobs along the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
The plan
Plan A
Start with Diawl Bach (12-14) — on the bob / top dropper — slow figure-of-eight retrieve. Midday in warm weather — switch to a fast-sink or Di-7 and fish boobies or blobs along the bottom. Rainbows respond to more active retrieves — try short strips between pauses.
Plan B
Fish early and late, try deeper during the heat of the day with a fast-sinking line.
Watch for
Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.
Bank
Bank-only venue. Fish from accessible margins, points, weed edges, and inflows.
Sub-surface · on the nymphunder the surface
Hatch predictions
See the full sub-surface read with Pro.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey
Hatch predictions
Top prey shown — see all 5 with Pro.
Start free trial14-day free trial. Cancel anytime.
Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Daphnia SwarmHatch
2
3
3
3
2
Daddy Long LegsHatch
2
3
2
Lake OliveHatch
2
3
3
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
What's coming
Plan ahead
5-day outlook
Condition match
27%
Cloud25%
Wind30%
Temp25%
Tough conditions for Redbournbury Fishery — expect slower sport and consider adapting your approach.
Other water nearby · 5
About this water
A chalk-influenced Hertfordshire fishery near Redbourn — spring-fed lakes with good clarity. Stocked rainbows. Accessible from London and the Home Counties. Day tickets.
- Fishery
- Chalk
Why this score
- Wind conditions (breezy) are not ideal for this water.
Directions
Seasons & zones
- Trout 1 April → 30 September
Related guides
Casting instructors near here
Booking & contacts
Permits & access
Clubs & associations