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22-acre lake near Highland. The lake tops out around 26 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 1904, digitized from the bathymetric atlas published in 1910. Species by species, here's what the data says the year looks like.
On the chart, Loch Aslaich draws 22 acres inside 0.9 miles of shoreline. At index 1.3 the outline is almost a bowl — read the depth changes, not the shoreline. Littoral water — the productive band under ~15 ft — makes up 83% of this chart. Tip to tip the water measures near 0.4 mi. You'll find it in Highland. For a second option, Lochan Glas-bheinn Mhor lies 2 mi east.
When the water first warms, brown trout slide up into 3 to 25 ft. By summer they slide out to 8 to 26 ft, and by winter most fish are in 4 to 26 ft. If you only fish one area, make it Break off the point: a drop-off around 9 ft that scores prime in summer. In summer the feeding windows fall in after dark and early morning. Keep a spoon at the thermocline or a deep stickbait (night) 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 | 3 to 25 ft | dawn & dusk | Main-lake point (3 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 8 to 26 ft chart-limited; documented 25 to 60 ft | night & dawn | Break off the point (9 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 4 to 26 ft chart-limited; documented 5 to 30 ft | dusk & dawn | Main-lake point (3 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 4 to 26 ft chart-limited; documented 5 to 35 ft | dawn | Break off the point (9 ft) | Jigging spoon, Small stickbait (slow) |
Start shallow in spring: european perch sit in 3 to 12 ft that time of year. Summer pushes them deeper, 7 to 26 ft, and winter fish settle into 8 to 26 ft. The spot to know is Deep basin, a deep basin in about 24 ft of water that rates prime for european perch in fall. Warm-month bites cluster around early morning. Throw a drop-shot micro plastics or a small crankbait (perch pattern) until the fish tell you otherwise.
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 | Break off the point (9 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 7 to 26 ft chart-limited; documented 8 to 28 ft | dawn | Deep basin (24 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 8 to 26 ft chart-limited; documented 10 to 33 ft | midday | Deep basin (24 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 8 to 26 ft chart-limited; documented 12 to 33 ft | midday & dawn | Deep basin (24 ft) | Tungsten jig + maggots, Small balance jig |
The spring pattern is a shallow one: northern pike in 2 to 8 ft. Midsummer fish sit out in 8 to 20 ft before dropping to 5 to 15 ft for winter. The spot to know is Break off the point, a drop-off in about 9 ft of water that rates prime for northern pike in fall. Plan around early morning and the evening in the warm months. Summer baits: a bucktail or a weedless spoon over cabbage gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | open water | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (9 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (9 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Break off the point (9 ft) | Tip-ups, Large jigging spoon |
4 pieces of structure are mapped here — Deep basin, around 24 ft, is the deepest of them.
Loch Aslaich is about 26 ft (8 m) deep at its deepest point. The depth data here comes from Murray & Pullar's Scottish loch survey of 1904, digitized from the bathymetric atlas published in 1910.
Anglers target brown trout, european perch, northern pike on Loch Aslaich. 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 24 ft of water that rates prime for european perch in fall. Every other rated spot, per species and season, is on the map above.
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.
Lochan Glas-bheinn Mhor 2 mi · Loch nam Breac Dearga 3 mi · Loch a Mhuilinn 3 mi · Loch Dubh 4 mi · Loch ma Stac 4 mi · Loch Meiklie 4 mi · Loch Ness 5 mi · Loch Liath 5 mi · Loch Kemp 6 mi · Loch Bran 7 mi · Loch nan Lann 7 mi · Loch Knockie 7 mi
See how Loch Aslaich stacks up: best northern pike lakes in United Kingdom · best european perch lakes in United Kingdom · best brown trout lakes in United Kingdom
More water nearby: Highland fishing maps (242 charts). 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.