Stoneflies
Caddisflies
Gammarids
- Ecology: Moderate
Water quality details
- Dissolved oxygen: High
- Biochemical Oxygen Demand (BOD): High
- Ammonia (Phys-Chem): High
- pH: High
- Phosphate: High
- Temperature: High
EA (England) · GB106039023220
Rules at a glance
- Free fishing
- Fly only
Water temperature for Brown Trout
Ideal16°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
Caddisflies
- Net-spinning caddisMost likelyLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
- Green SedgeAlso possibleLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
Hatch timeline · todayPeak at 15h
12h(now) — Daddy Long Legs
Stage: On emergersApproach: Emerger or dryActivity: 38%
Also:Pale Watery23%Cinnamon Sedge23%
Weather boost8 food groups active
Peak activity at 15h — Small Dark Olive (Small Dark Olive, 12 food groups active)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 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 4 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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Mayfly (Green Drake)Hatch
2
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
CapererHatch
2
3
3
2
Brown SedgeHatch
2
3
3
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Brown Trout
Beats · 3 · 1 reaches
The Lambourn is not one open fishery — it is one of England's purest chalk streams but almost entirely private syndicate and estate water, with only a handful of day-rod beats. The fast, clear gravel runs are sight-fishing, wading water that fishes like a smaller, more technical upper Test. There is no single Lambourn permit — book a named beat (Donnington Grove via Fishing Breaks, or the Englefield/Boxford day-ticket water) ahead and confirm wading and method rules before travelling.
Lambourn day rods · 3 beatsMixed
Donnington Grove, Englefield & Boxford day-ticket water, Lambourn syndicate & estate water
The 3 beats
Donnington GroveAgent booking
Donnington Grove (via Fishing Breaks)
The Lambourn's best-known day-rod beat — fast, clear water over bright gravel with undercut banks, ideal for sight fishing. Holds small wild fish, larger locally reared brown trout and a healthy grayling population. An all-wading beat for one rod or two friends; trout from 1 April, with winter grayling day rods listed 1 October–28 February.
All-wading beat — light outfit and stealth essential. Trout from 1 April; winter grayling 1 October – 28 February.
Visit official site ↗Englefield & Boxford day-ticket waterDay tickets
Englefield Estate / Boxford Trout Fishery
The other realistic day-rod route on an otherwise private river — the Englefield and Boxford beats issue day tickets by booking, on classic spring-fed chalk-stream water with gravel runs, ranunculus weed and abundant olive hatches. Wild and stocked brown trout plus grayling; technical, stealthy dry-fly fishing.
Day tickets by booking. Check beat-level barbless / catch-and-release / fly-only rules; low summer flows demand small flies and stealth.
Lambourn syndicate & estate waterMembers-only
Private syndicates and estates
The great majority of the Lambourn from the Downs through Eastbury and Boxford to the Kennet confluence at Shaw is private syndicate or estate water with no visitor route. Listed so anglers understand most of this crystal-clear river is members-only, not casual day-ticket access.
Permits & access
Permit required — see local rules.
- Private/syndicate beats dominate
- Englefield Estate and Boxford Trout Fishery offer day tickets
- Check beat-level rules for barbless / catch-and-release / fly-only restrictions.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
East Garston Terrain map
Water quality (WFD)
The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time45 × 13%5.9
Pressure80 × 7%5.6
Insect activity67 × 12%8.0
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
Clubs & associations
- Reading & District Angling Association - RDAAMembers only: no day tickets, join the club to fish here
Boards & regulators
River Lambourn
Water temperature for Brown Trout
Ideal16°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
Caddisflies
- Net-spinning caddisMost likelyLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
- Green SedgeAlso possibleLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
Hatch timeline · todayPeak at 15h
12h(now) — Daddy Long Legs
Stage: On emergersApproach: Emerger or dryActivity: 38%
Also:Pale Watery23%Cinnamon Sedge23%
Weather boost8 food groups active
Peak activity at 15h — Small Dark Olive (Small Dark Olive, 12 food groups active)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 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 4 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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Mayfly (Green Drake)Hatch
2
2
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
CapererHatch
2
3
3
2
Brown SedgeHatch
2
3
3
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Brown Trout
Beats · 3 · 1 reaches
The Lambourn is not one open fishery — it is one of England's purest chalk streams but almost entirely private syndicate and estate water, with only a handful of day-rod beats. The fast, clear gravel runs are sight-fishing, wading water that fishes like a smaller, more technical upper Test. There is no single Lambourn permit — book a named beat (Donnington Grove via Fishing Breaks, or the Englefield/Boxford day-ticket water) ahead and confirm wading and method rules before travelling.
Lambourn day rods · 3 beatsMixed
Donnington Grove, Englefield & Boxford day-ticket water, Lambourn syndicate & estate water
The 3 beats
Donnington GroveAgent booking
Donnington Grove (via Fishing Breaks)
The Lambourn's best-known day-rod beat — fast, clear water over bright gravel with undercut banks, ideal for sight fishing. Holds small wild fish, larger locally reared brown trout and a healthy grayling population. An all-wading beat for one rod or two friends; trout from 1 April, with winter grayling day rods listed 1 October–28 February.
All-wading beat — light outfit and stealth essential. Trout from 1 April; winter grayling 1 October – 28 February.
Visit official site ↗Englefield & Boxford day-ticket waterDay tickets
Englefield Estate / Boxford Trout Fishery
The other realistic day-rod route on an otherwise private river — the Englefield and Boxford beats issue day tickets by booking, on classic spring-fed chalk-stream water with gravel runs, ranunculus weed and abundant olive hatches. Wild and stocked brown trout plus grayling; technical, stealthy dry-fly fishing.
Day tickets by booking. Check beat-level barbless / catch-and-release / fly-only rules; low summer flows demand small flies and stealth.
Lambourn syndicate & estate waterMembers-only
Private syndicates and estates
The great majority of the Lambourn from the Downs through Eastbury and Boxford to the Kennet confluence at Shaw is private syndicate or estate water with no visitor route. Listed so anglers understand most of this crystal-clear river is members-only, not casual day-ticket access.
Permits & access
Permit required — see local rules.
- Private/syndicate beats dominate
- Englefield Estate and Boxford Trout Fishery offer day tickets
- Check beat-level rules for barbless / catch-and-release / fly-only restrictions.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
East Garston Terrain map
Water quality (WFD)
- Ecology: Moderate
Water quality details
- Dissolved oxygen: High
- Biochemical Oxygen Demand (BOD): High
- Ammonia (Phys-Chem): High
- pH: High
- Phosphate: High
- Temperature: High
EA (England) · GB106039023220
The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time45 × 13%5.9
Pressure80 × 7%5.6
Insect activity67 × 12%8.0
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
Clubs & associations
- Reading & District Angling Association - RDAAMembers only: no day tickets, join the club to fish here
Boards & regulators