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201-acre lake near North Ayrshire. The lake tops out around 30 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from Murray & Pullar's Scottish loch survey of 1906, digitized from the bathymetric atlas published in 1910. Here's the year, species by species, as the scoring engine sees it.
On the chart, Kilbirnie Loch draws 200 acres inside 3.1 miles of shoreline. Index 1.6 on the shoreline: a few honest points and pockets, nothing labyrinthine. Roughly 93% of the water is 15 ft or less, the band where the food chain lives. The basin spans about 1.1 mi end to end and 0.5 mi across at its widest. The water lies in North Ayrshire. Closest neighbour on DepthScout: Gryfe Reservoirs, 11 mi north of here.
Early season brown trout use the shallows, holding in 3 to 25 ft. Summer is a 9 to 30 ft game here, winter a 4 to 30 ft one. The chart's best answer is Deep basin — deep basin, 30 ft, prime for summer. Best bite is after dark and early morning. Tie on a spoon at the thermocline or a deep stickbait (night) and you're in the game.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Secondary point (9 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 9 to 30 ft chart-limited; documented 25 to 60 ft | night & dawn | Deep basin (30 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Secondary point (9 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 4 to 30 ft chart-limited; documented 5 to 35 ft | dawn | Deep basin (30 ft) | Jigging spoon, Small stickbait (slow) |
Spring puts european perch in skinny water — 3 to 12 ft is the zone. Warm water sends them out to 8 to 28 ft; cold water stacks them in 9 to 30 ft. Deep basin is the standout, a deep basin at roughly 30 ft, rated prime for fall european perch. Plan around early morning in the warm months. A drop-shot micro plastics or a small crankbait (perch pattern) covers the summer program.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (2 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 8 to 28 ft | dawn | Deep basin (30 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 9 to 30 ft chart-limited; documented 10 to 33 ft | midday | Deep basin (30 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 9 to 30 ft chart-limited; documented 12 to 33 ft | midday & dawn | Deep basin (30 ft) | Tungsten jig + maggots, Small balance jig |
Spring puts northern pike in skinny water — 2 to 8 ft is the zone. As the season builds they drop to 8 to 20 ft, wintering in 5 to 15 ft. Spring northern pike concentrate at Shallow bay flat, a prime-rated weed flat around 2 ft. Warm-month bites cluster around early morning and the evening. 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 (2 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Secondary point (9 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Secondary point (9 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Secondary point (9 ft) | Tip-ups, Large jigging spoon |
When the water first warms, arctic char slide up into 4 to 15 ft. By summer they slide out to 9 to 30 ft, and by winter most fish are in 8 to 30 ft. If you only fish one area, make it Deep basin: a deep basin around 30 ft that scores prime in summer. In summer the feeding windows fall in early morning. Keep a jigging spoon vertical or a tube jig (smelt) rigged through the warm months.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | midday & dawn | Break off the point (2 ft) | Small casting spoon (silver/orange), Jerkbait (small) |
| Summer | 9 to 30 ft chart-limited; documented 20 to 60 ft | dawn | Deep basin (30 ft) | Jigging spoon vertical, Tube jig (smelt) |
| Fall | 8 to 30 ft | midday & dusk | Break off the point (2 ft) | Casting spoon (orange/gold), Beadhead streamer |
| Winter | 8 to 30 ft chart-limited; documented 10 to 40 ft | midday & dawn | Deep basin (30 ft) | Jigging spoon (glow/silver), Tungsten jig + plastic |
The spring pattern is a shallow one: rainbow trout in 5 to 20 ft. Midsummer fish sit out in 8 to 30 ft before dropping to 6 to 30 ft for winter. The spot to know is Secondary point, a point in about 9 ft of water that rates prime for rainbow trout in spring. Plan around early morning and the evening in the warm months. Summer baits: a dodger + spoon (deep troll) or a flutter spoon gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Secondary point (9 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Secondary point (9 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 9 to 30 ft chart-limited; documented 10 to 35 ft | dawn & dusk | Secondary point (9 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 6 to 30 ft chart-limited; documented 8 to 40 ft | dawn | Deep basin (30 ft) | Jigging spoon, Tube jig (white) |
Kilbirnie Loch carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 30 ft down.
Kilbirnie Loch is about 30 ft (9 m) deep at its deepest point. The depth data here comes from Murray & Pullar's Scottish loch survey of 1906, digitized from the bathymetric atlas published in 1910.
Anglers target brown trout, european perch, northern pike, arctic char, rainbow trout on Kilbirnie Loch. 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.
Deep basin is the top-rated area: a deep basin in about 30 ft of water that rates prime for european perch in fall. Scroll up to the map for the complete spot list by species and season.
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.
Gryfe Reservoirs 11 mi · Loch Thom 12 mi · Loch Fad or Kirk Dam 16 mi · Martnaham Loch 23 mi · Woodend Loch 24 mi · Belston Loch 25 mi · Loch Eck 26 mi · Loch Tanna 26 mi · Loch Lomond 28 mi · Loch Ard 30 mi · Glenbuck Loch 31 mi · Loch Dhu 31 mi
See how Kilbirnie Loch 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
Browse all United Kingdom fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. 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.