Stoneflies
Gammarids
- Ecology: Good
- Chemical: Unknown
NRW (Wales) · UKGB110059032170
Rules at a glance
- Fly only
Water temperature for Atlantic Salmon
Ideal12°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Summer through autumn. Fish on the drop after rain — small numbers throughout the season.
Where
Middle and lower Tawe pools. Tawe & Tributaries AA named beats.
Method
Small doubles 10 to 12 across-and-down on a floating line; small tubes on a sink-tip in spring water. Cover the pools methodically. Mandatory catch-and-release under NRW byelaw — every salmon goes back.
Kit
12 ft #7/8 double-hander or 11 ft switch. Floating line plus light sink-tip. 10 to 12 lb fluoro tippet.
Why this works
Excellent — water temperature is right today, though river flow could be better.
Likely species
Hatch timeline · todayPeak at 15:00
Hatch predictions
Today's headline hatch shown — see all 12 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 5 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Supporters see what else is on the menu.
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 · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
1
Sea trout runRun
1
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
1
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.
Ranked for today
Fly box · Atlantic Salmon
Beats · 4
Pontardawe & Swansea AA — day ticket via Fishing PassportAccess varies
Two and a half kilometres of lower Tawe — mostly single bank, with seven named salmon pools.
Visit official site ↗Tawe Beat 1 — day ticket via Fishing PassportAccess varies
Two and a half miles on the headwaters of the Tawe, shadowed by Llyn-y-Fan and set in the Brecon Beacons National Park.
Visit official site ↗Tawe Beat 2 — day ticket via Fishing PassportAccess varies
Just under two miles below Ystradgynlais — wild and stocked browns mixed (the club runs a triploid stocking programme to top up the wild head).
Visit official site ↗River Clydach (Upper & Lower) — Pontardawe & Swansea ASMembers
Two short Tawe tributaries through Pontardawe and Clydach village — Upper Clydach (up through Cwmdu Glen) and Lower Clydach (up to Lon Bridge).
Visit official site ↗What's coming
Plan ahead
5-day outlook
Fishing better nearby · 5
Gallery · 2
The River Tawe below Heol Giedd, near Ystradgynlais in the Swansea Valley Terrain map
Water quality (WFD)
Why this score · for Atlantic Salmon
- Temperature10030% weight
- Flow6025% weight
- Clarity9520% weight
- Feeding Time9015% weight
- Pressure8510% weight
Directions
Seasons & zones
- Salmon 1 May → 17 October
- Sea trout 3 March → 17 October
- Trout 3 March → 30 September
Sea trout: Variable seasonal (2026) — Sewin run on the lower and middle Tawe is genuine but modest — the river's better-known story is its upper-river brown trout fishing. All-Wales At Risk picture applies.
Related guides
Casting instructors near here
Booking & contacts
Boards & regulators
Tawe
Water temperature for Atlantic Salmon
Ideal12°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Summer through autumn. Fish on the drop after rain — small numbers throughout the season.
Where
Middle and lower Tawe pools. Tawe & Tributaries AA named beats.
Method
Small doubles 10 to 12 across-and-down on a floating line; small tubes on a sink-tip in spring water. Cover the pools methodically. Mandatory catch-and-release under NRW byelaw — every salmon goes back.
Kit
12 ft #7/8 double-hander or 11 ft switch. Floating line plus light sink-tip. 10 to 12 lb fluoro tippet.
Why this works
Excellent — water temperature is right today, though river flow could be better.
Likely species
Hatch timeline · todayPeak at 15:00
Hatch predictions
Today's headline hatch shown — see all 12 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 5 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Supporters see what else is on the menu.
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 · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
1
Sea trout runRun
1
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
1
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.
Ranked for today
Fly box · Atlantic Salmon
Beats · 4
Pontardawe & Swansea AA — day ticket via Fishing PassportAccess varies
Two and a half kilometres of lower Tawe — mostly single bank, with seven named salmon pools.
Visit official site ↗Tawe Beat 1 — day ticket via Fishing PassportAccess varies
Two and a half miles on the headwaters of the Tawe, shadowed by Llyn-y-Fan and set in the Brecon Beacons National Park.
Visit official site ↗Tawe Beat 2 — day ticket via Fishing PassportAccess varies
Just under two miles below Ystradgynlais — wild and stocked browns mixed (the club runs a triploid stocking programme to top up the wild head).
Visit official site ↗River Clydach (Upper & Lower) — Pontardawe & Swansea ASMembers
Two short Tawe tributaries through Pontardawe and Clydach village — Upper Clydach (up through Cwmdu Glen) and Lower Clydach (up to Lon Bridge).
Visit official site ↗What's coming
Plan ahead
5-day outlook
Fishing better nearby · 5
Gallery · 2
The River Tawe below Heol Giedd, near Ystradgynlais in the Swansea Valley Terrain map
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
NRW (Wales) · UKGB110059032170
Why this score · for Atlantic Salmon
- Temperature10030% weight
- Flow6025% weight
- Clarity9520% weight
- Feeding Time9015% weight
- Pressure8510% weight
Directions
Seasons & zones
- Salmon 1 May → 17 October
- Sea trout 3 March → 17 October
- Trout 3 March → 30 September
Sea trout: Variable seasonal (2026) — Sewin run on the lower and middle Tawe is genuine but modest — the river's better-known story is its upper-river brown trout fishing. All-Wales At Risk picture applies.
Related guides
Casting instructors near here
Booking & contacts
Boards & regulators