Limestone · Midlands / Roscommon–Longford

Shannon (Upper)

Shannon (Upper) terrain map
Terrain map

The upper Shannon above Lough Ree holds brown trout in a slow, limestone-rich environment.

Prime · Brown Trout
Pheasant Tail Nymph · 14-18
Primelive now
About as good as it gets
River dropping into shape after a lift. The kind of afternoon you remember — a weighted nymph through the clearing seams, the dry as it settles.
75% confidence
What moved it
  • Level0.35 mDropping after lift
  • Water temp13.8°C
  • ClarityClearClearing
Today’s fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
Upstream
Conditions on the water
Live gauge
Level
Steady
0.35 m
Dropping after lift
Water temp13.8°C
ClarityClear
Weather14°C
WindW 17 km/h
Pressure1025 hPa
Rain · recent0.1 mm
Rain · ahead1.6 mm

Live readings only. Trends shown where the gauge supports them.

Water temperature for brown trout
Ideal
13.8°Cideal 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.
Why this works
Excellent — water temperature is working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 10 active hatches hour by hour with Pro.

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Evidence
Survey-backed · regionalModerate confidence

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

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Daddy Long LegsHatch
2
3
2
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1

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

Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • State rod licence required
  • Coarse fishing stretches intermixed.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Lough Ree
11 km
Brown trout · Pike
Mount Dalton Lake
33 km
Brown trout
Lough Gowna
40 km
Pike
Lough Owel
41 km
Brown trout
Lough Acalla
41 km
Rainbow trout · Brown trout
About this water

The upper Shannon above Lough Ree holds brown trout in a slow, limestone-rich environment. The river meanders through the midlands — more intimate than the lower Shannon, with good mayfly hatches in May–June and sedge activity through summer. Access is largely free with a state rod licence.

  • Limestone
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Unknown
The full read · show the working · for brown trout · confidence 75%
How the 80 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity52 × 12%6.2
Conditions total= 80
Can you trust it?
Water temperaturelive gauge readinggauge
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
Apple MapsGoogle Maps
Seasons & zones
  • Trout1 March → 30 September
Related guides
ConnemaraIrish fishingEuro Nymphingsubsurface methods
Booking & contacts