Spate · Silurian · Mid Wales / Powys (Ithon Valley, Wye tributary)

Ithon

Ithon terrain map

A quieter Radnorshire Wye tributary running past Llandrindod Wells and Penybont, day-ticketed through the Fishing Passport across three beats of shale-and-gravel water.

Tomorrow · Slow going — better windows ahead
Diawl Bach
Forecast · Tomorrow
Slow going — better windows ahead
Little in your favour today. Fish the certain lies, or leave it for a better one.
40% projected
Today's fly
Diawl Bach
Diawl Bach
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Wye
Water temp13.4°C
ClarityClear
Weather11°C
WindN 9 km/h
Pressure1026 hPa
Rain · recent4.5 mm
Rain · ahead0.0 mm

No gauge on this water — conditions are inferred from Wye. The trend transfers, the absolute level does not.

Water temperature for Atlantic Salmon
Ideal
13°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Morning into early afternoon.
Where
Pool tails, steadier runs, and any water with pace.
Method
Fish a sensible line-and-fly combination for the height and pace of water.
Kit
13 ft #8/9 double-hander in spate, 10 ft #8 single in low water. Floating line plus a fast-sink tip. 12–15 lb fluoro tippet.
Why this works
Good — water temperature is working for you, but time of day is the limiting factor today.
Hatch timeline · tomorrowPeak at 12pm

12pm(now) — Heather Fly

Stage: Terrestrials on topApproach: Dry flyActivity: 67%
Also:Daddy Long Legs62%Autumn Dun34%Cinnamon Sedge32%
Peak emergence window10 food groups active

Peak activity at 12pm — Heather Fly (Heather Fly, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 4 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
March BrownHatch
2
3
2
CapererHatch
2
3
3
2
Heather FlyHatch
2
2
Autumn DunHatch
2
3
2

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

Beats · 3 · 1 reaches
Ithon beats — Fishing Passport · 3 beatsDay rods
Bryn Ithon, Disserth, Severn Arms — Beat 1
The 3 beats
Bryn IthonDay tickets
Wye & Usk Foundation (Fishing Passport)
Left-bank-only stretch of the River Ithon, just under a mile, just downstream of Llandrindod Wells. Shale/bedrock bed, notably underfished.
Fishing Passport, max 2 tickets/day. Parking ~650m from beat start.
Visit official site ↗
DisserthDay tickets
Wye & Usk Foundation (Fishing Passport)
~3 miles of River Ithon just downstream of Llandrindod Wells (mostly right bank, with a two-thirds-mile double-bank middle section). Non-exclusive — a local club also holds rights here, though overlap is described as remote given the length.
Fishing Passport, max 4 tickets/day.
Visit official site ↗
Severn Arms — Beat 1Day tickets
Wye & Usk Foundation (Fishing Passport)
One of three beats making up the Severn Arms' 4 miles of River Ithon near Penybont — this is Beat 1. Easy, open, gravel-bed water, among the most accessible on the whole Wye catchment. Grayling and trout primarily; salmon spawning also occurs on this reach.
Fishing Passport, max 2 tickets/day. Parking ~150m. Accommodation tie-in with the Severn Arms Hotel. Grayling trotting start date here is 1 Oct — earlier than the 1 Nov used on Bryn Ithon and Disserth Ithon, so don't assume a catchment-wide date.
Visit official site ↗
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Edw
7.0 km
Brown trout · Salmon
Wye
19 km
Brown trout · Salmon · Grayling
Irfon
24 km
Brown trout · Grayling · Salmon
Arrow
24 km
Brown trout · Grayling
Llynfi
28 km
Brown trout · Grayling · Chub
About this water

A quieter Radnorshire Wye tributary running past Llandrindod Wells and Penybont, day-ticketed through the Fishing Passport across three beats of shale-and-gravel water. Underfished relative to its neighbours, it holds wild brown trout, grayling and chub, with salmon spawning recorded on at least one beat even though it isn't marketed as a salmon fishery.

  • Silurian
Why this score · for Atlantic Salmon
  • Temperature10030% weight
  • Flow6025% weight
  • Clarity9520% weight
  • Feeding Time1515% weight
  • Pressure8510% weight
Related guides
Atlantic Salmonsalmon tacticsGrayling Playbookgrayling tacticsYorkshire & SpidersNorth Country methods
Casting instructors near here
Booking & contacts