Spate · Carboniferous Coal Measures · South Wales Valleys (Rhondda Fawr & Fach, Taff tributary)

Rhondda

A fast-flowing stretch of the Rhondda River lined with trees and terraced houses in the Rhondda Valley.
Marginal · Atlantic Salmon
Marginal — persistence required
River lifting fast on the rain. A short window at best — fish the sure lies and move on.
40% confidence
limited data
What moved it
  • LevelProxyvia River Taff
  • Water temp12.7°C
  • ClarityVery colouredColouring up
Conditions on the water
Proxy gauge
Level
Rising
Proxy
via River Taff
Water temp12.7°C
ClarityVery coloured
Weather13°C
WindW 33 km/h
Pressure1014 hPa
Rain · recent6.0 mm
Rain · ahead0.3 mm

No gauge on this water — conditions are inferred from River Taff. 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
Poor — water temperature is working for you, but water clarity is the limiting factor today.
Likely species
Stoneflies
Gammarids
Hatch timeline · todayPeak at 11 Uhr

Hatch predictions

Today's headline hatch shown — see all 11 active hatches hour by hour as a supporter.

Start free trial

14-day free trial. Cancel anytime.

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Supporters see what else is on the menu.

Start free trial

14-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
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

Osprey Fly Fishers cover the lower, grayling-holding river toward Pontypridd; Upper Rhondda AA covers the source end near Llyn Fawr. A long-standing middle stretch (formerly Glyncornel AA) is currently free to fish on just a rod licence after that club folded.

Rhondda day-ticket water · 3 beatsDay rods
Osprey Fly Fishers' Association, Upper Rhondda Angling Association, Former Glyncornel AA water — now free fishing
The 3 beats
Osprey Fly Fishers' AssociationDay tickets
Osprey Fly Fishers' Association
Lower river, from the Taff junction up to Trehafod footbridge — the stretch closest to Pontypridd, and where grayling are genuinely present (the Grayling Society's own guide names Osprey's Taff/Rhondda/Cynon water specifically). Occasional late-season salmon.
Day ticket £10; full river permit £65 (covers Taff, Rhondda, Cynon, Usk, and Brecon Beacons reservoirs). Grayling season 1 Oct–28 Feb on this club's Taff/Rhondda/Cynon water.
Visit official site ↗
Upper Rhondda Angling AssociationDay tickets
Upper Rhondda Angling Association
Upper river near the source, adjoining Llyn Fawr reservoir — fished by this club since 1957.
Day/season ticket, contact club for current details.
Former Glyncornel AA water — now free fishingPublic
No current controller — free to rod-licence holders
Roughly 12-15 miles from Bwlch Mountain above Cwmparc down through Treorchy to Trehafod — historically Glyncornel Angling Association's water, described as strong trout fishing with 4lb+ fish not uncommon. Glyncornel folded around 2024; the council hasn't re-leased the fishing rights, so this stretch is currently free to fish with just a rod licence rather than gated behind a club permit. Worth a phone check (01443 432289) before relying on this, since the status could change.
Free — NRW/EA rod licence only, no separate permit as of 2026. Trout season 3 March-30 September.
Visit official site ↗
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
River Taff
5.0 km
30
Brown trout · Grayling · Salmon
Sirhowy
13 km
30
Brown trout · Salmon
River Ely
9.0 km
Brown trout · Sea trout
River Rhymney
11 km
Brown trout · Sea trout
Afon Cynon
14 km
Brown trout
Gallery · 2
  1. A fast-flowing stretch of the Rhondda River lined with trees and terraced houses in the Rhondda Valley.
    Downstream along the Rhondda River, Treorchy
  2. Terrain map of the venue
    Terrain map
Why this score · for Atlantic Salmon
  • Temperature10030% weight
  • Flow8025% weight
  • Clarity1520% weight
  • Feeding Time4015% weight
  • Pressure8510% weight
Related guides
Atlantic Salmonsalmon tacticsGrayling Playbookgrayling tacticsYorkshire & SpidersNorth Country methods
Casting instructors near here
Booking & contacts
Boards & regulators