Loch Beinn Iosbhal or Loch Benisval Depth Map (UK)

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Loch Beinn Iosbhal or Loch Benisval, UK

Max 95 ft

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Where to start

Sedge season & the Murrough window is on — see the hatch outlook

Hatch outlook

Sedge season & the MurroughActive window

Typical here: Jun 1 – Sep 30 · the Murrough and Green Peter are lough patterns from July, peaking the last weeks of August; evening sedge fishing runs to the season close

pupawarm summer evenings as the light fades
adultlate evening into dark, on calm water — the great red sedge is large enough to provoke explosive surface takes from big trout — fished dry off the shorelines and on the drift

Big-fish-on-top fishing in the last two hours of light — the sedge weeks of late August produce some of the best days of the lough year.

The evening sedge pulls big trout to the shorelines in low light — exactly when small surface plugs and slow-twitched 4–5cm minnowbaits shine along the rocky shores and weed edges; or run a bubble float with a dry Murrough behind it, twitched on the pause.

The event happens over lough shorelines, rocky shallows and weed edges on warm, calm summer evenings

Daddy-Long-Legs (crane fly)Active window

Typical here: Jul 1 – Oct 15 · dapped daddies documented from early July on Corrib; the famous window is mid-August through September, with grasshopper dapping in the same weeks

adultdaytime, on a drift with a wave — best on the breezy days that blow craneflies off the banks — the documented method is dapping: a natural or artificial daddy on a long rod and floss line, skipping across the surface ahead of the drifting boat; a dry daddy on the drift is the modern equivalent

The autumn wake-up: big trout that ignored everything through June and July suddenly become aggressive — often the largest browns of the season on a dry fly.

Fish the windward drifts where the terrestrials land — surface plugs twitched on a wave, or a bubble float trailing a daddy skipped on the surface (dapping with spin gear, effectively). The late-season big-fish window before the September close.

The event happens over windward shorelines, island shallows and drift lines on breezy August–September days

Next on this water

Buzzers & Duckfly (chironomids) · midgeMar 15 – Jun 30 · in ~6 months

Spring roach spawn (predator event) · baitfishApr 15 – Jun 15 · in ~7 months

Hawthorn Fly · terrestrialsApr 18 – May 15 · in ~7 months

The Mayfly (Ephemera danica) · mayflyApr 25 – Jul 5 · in ~7 months

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours on this water are approximations. Never use for navigation. Always check local regulations.

Depth · ft

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Recent catches at Loch Beinn Iosbhal or Loch Benisval

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Fishing Loch Beinn Iosbhal or Loch Benisval: what the data says

190-acre lake near Na h-Eileanan an Iar. The lake tops out around 95 ft. The contours come from a model of the real basin shape and its known max depth. Read them as probabilities, not soundings, and keep them out of navigation decisions. Here's the year, species by species, as the scoring engine sees it.

Traced from the shoreline, Loch Beinn Iosbhal or Loch Benisval runs 189 acres with 3.2 miles of edge. Index 1.7 on the shoreline: a few honest points and pockets, nothing labyrinthine. About 31% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Call it 0.9 mi long by 0.7 mi wide at the broadest reach. You'll find it in Na h-Eileanan Siar. The nearest mapped water is Loch Crò Chriosdaig, 1 mi to the north.

Brown Trout fishing at Loch Beinn Iosbhal or Loch Benisval

Early season brown trout use the shallows, holding in 3 to 25 ft. Expect a summer slide to 25 to 60 ft, then a winter hold in 5 to 35 ft. Put Break off the point first on the milk run — a drop-off near 43 ft that grades prime for summer. In summer the feeding windows fall in after dark and early morning. Tie on a spoon at the thermocline or a deep stickbait (night) and you're in the game.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 25 ft	dawn & dusk	Main-lake point (24 ft)	Stickbait off planer boards (shallow), Small spoon along mud lines
Summer	25 to 60 ft	night & dawn	Break off the point (43 ft)	Spoon at the thermocline, Deep stickbait (night)
Fall	5 to 30 ft	dusk & dawn	Main-lake point (24 ft)	Jerkbait over gravel, Casting spoon
Winter	5 to 35 ft	dawn	Break off the point (43 ft)	Jigging spoon, Small stickbait (slow)

European Perch fishing at Loch Beinn Iosbhal or Loch Benisval

Spring puts european perch in skinny water — 3 to 12 ft is the zone. As the season builds they drop to 8 to 28 ft, wintering in 12 to 33 ft. Spring european perch concentrate at Shallow bay flat, a prime-rated weed flat around 6 ft. Warm-month bites cluster around early morning. A drop-shot micro plastics or a small crankbait (perch pattern) covers the summer program.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	midday & dawn	Shallow bay flat (6 ft)	Small jig + curly tail, Inline spinner #1-2
Summer	8 to 28 ft	dawn	Shallow bay flat (6 ft)	Drop-shot micro plastics, Small crankbait (perch pattern)
Fall	10 to 33 ft	midday	Break off the point (43 ft)	Jigging spoon (small), Drop-shot on deep flats
Winter	12 to 33 ft	midday & dawn	open water	Tungsten jig + maggots, Small balance jig

Northern Pike fishing at Loch Beinn Iosbhal or Loch Benisval

Spring puts northern pike in skinny water — 2 to 8 ft is the zone. Warm water sends them out to 8 to 20 ft; cold water stacks them in 5 to 15 ft. Shallow bay flat is the standout, a weed flat at roughly 6 ft, rated prime for spring northern pike. Plan around early morning and the evening in the warm months. A bucktail or a weedless spoon over cabbage covers the summer program.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 8 ft	midday & dawn	Shallow bay flat (6 ft)	#5 inline spinner, Spoon (red/white)
Summer	8 to 20 ft	dawn & dusk	Shallow bay flat (6 ft)	Bucktail, Weedless spoon over cabbage
Fall	6 to 18 ft	midday & dawn	Shallow bay flat (6 ft)	Big rubber (Bull Dawg style), Husky-style jerkbait
Winter	5 to 15 ft	midday	Shallow bay flat (6 ft)	Tip-ups, Large jigging spoon

Arctic Char fishing at Loch Beinn Iosbhal or Loch Benisval

When the water first warms, arctic char slide up into 4 to 15 ft. Summer is a 20 to 60 ft game here, winter a 10 to 40 ft one. Start at Break off the point. It's a drop-off holding about 43 ft of water and rates prime come summer. The feeding windows run early morning. Keep a jigging spoon vertical or a tube jig (smelt) rigged through the warm months.

Season	Depth	Best window	Start at	Go-to baits
Spring	4 to 15 ft	midday & dawn	open water	Small casting spoon (silver/orange), Jerkbait (small)
Summer	20 to 60 ft	dawn	Break off the point (43 ft)	Jigging spoon vertical, Tube jig (smelt)
Fall	8 to 30 ft	midday & dusk	open water	Casting spoon (orange/gold), Beadhead streamer
Winter	10 to 40 ft	midday & dawn	Break off the point (43 ft)	Jigging spoon (glow/silver), Tungsten jig + plastic

Notable structure

6 pieces of structure are mapped here — Deep basin, around 81 ft, is the deepest of them.

Deep basin: deep basin, around 81 ft
Break off the point: drop-off, around 43 ft
Main-lake point: point, around 24 ft
Secondary point: point, around 24 ft
Shallow bay flat: weed flat, around 6 ft
Back-bay flat: weed flat, around 6 ft

Common questions

How deep is Loch Beinn Iosbhal or Loch Benisval?

Loch Beinn Iosbhal or Loch Benisval is about 95 ft (29 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.

What fish are in Loch Beinn Iosbhal or Loch Benisval?

Anglers target brown trout, european perch, northern pike, arctic char on Loch Beinn Iosbhal or Loch Benisval. This isn't a survey of the water — none is published for it — but an informed estimate from the species common to the region, narrowed by this water's depth, size and each species' range.

Where is the best fishing spot on Loch Beinn Iosbhal or Loch Benisval?

Shallow bay flat is the top-rated area: a weed flat in about 6 ft of water that rates prime for european perch in spring. Every other rated spot, per species and season, is on the map above.

When is the best time to fish Loch Beinn Iosbhal or Loch Benisval?

For brown trout, the summer bite is best in after dark and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.

Nearby waters

Loch Crò Chriosdaig 1 mi · Loch Bodabhat or Loch Bodavat 1 mi · Loch na Craobhaig 2 mi · Loch Morsgail 4 mi · Loch Dìobadail 4 mi · Loch Bhoisimid or Loch Voshimid 4 mi · Loch Gruineabhat or Loch Grunavat 5 mi · Loch Langabhat or Loch Langavat 5 mi · Loch Raonasgail 6 mi · Loch Suaineabhal or Loch Suainaval 6 mi · Loch a Lhighe Bhig 7 mi · Loch Stacsabhat or Loch Stacsavat 8 mi

See how Loch Beinn Iosbhal or Loch Benisval stacks up: best northern pike lakes in United Kingdom · best european perch lakes in United Kingdom · best brown trout lakes in United Kingdom · best arctic char lakes in United Kingdom

More water nearby: Na h-Eileanan Siar fishing maps (84 charts). Browse all United Kingdom fishing maps. See every water on DepthScout. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.