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9-acre lake near Cumbria. The lake tops out around 33 ft. What you see is a modeled chart: the shoreline is real, the max depth is published, and the contours between are estimated. Plan with it; don't navigate by it. Below is the species-by-species picture, pulled from the same data the map uses.
Traced from the shoreline, Sunbiggin Tarn runs 9 acres with 0.5 miles of edge. Nearly circular (index 1.1), so the story is the bottom, not the bank. Roughly 32% of the water is 15 ft or less as modeled, the band where the food chain lives. You'll find it in Cumbria. For a second option, Whinfell Tarn lies 9 mi southwest.
Come spring, look for brown trout tight to the bank in 3 to 25 ft. Expect a summer slide to 10 to 33 ft, then a winter hold in 5 to 33 ft. Start at Shoreline break. It's a drop-off holding about 15 ft of water and rates prime come summer. Prime time lands in after dark and early morning. A spoon at the thermocline or a deep stickbait (night) is the honest summer answer here.
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 | Shoreline break (15 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 10 to 33 ft chart-limited; documented 25 to 60 ft | night & dawn | Shoreline break (15 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Shoreline break (15 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 33 ft chart-limited; documented 5 to 35 ft | dawn | Shoreline break (15 ft) | Jigging spoon, Small stickbait (slow) |
The spring pattern is a shallow one: european perch in 3 to 12 ft. As the season builds they drop to 8 to 28 ft, wintering in 12 to 33 ft. Top water on the chart: Shallow bay flat, a weed flat in the 4 ft range, prime in spring. Time it for early morning. Summer baits: a drop-shot micro plastics or a small crankbait (perch pattern) gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (4 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 8 to 28 ft | dawn | Deep basin (28 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 10 to 33 ft | midday | Deep basin (28 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 12 to 33 ft | midday & dawn | Deep basin (28 ft) | Tungsten jig + maggots, Small balance jig |
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Warm water sends them out to 8 to 20 ft; cold water stacks them in 5 to 15 ft. Top water on the chart: Shallow bay flat, a weed flat in the 4 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a bucktail or a weedless spoon over cabbage until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (4 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Shoreline break (15 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Shoreline break (15 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (4 ft) | Tip-ups, Large jigging spoon |
Early season arctic char use the shallows, holding in 4 to 15 ft. Summer is a 10 to 33 ft game here, winter an 8 to 33 ft one. The chart's best answer is Deep basin — deep basin, 28 ft, prime for summer. Best bite is early morning. Tie on a jigging spoon vertical or a tube jig (smelt) 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 | 4 to 15 ft | midday & dawn | Shoreline break (15 ft) | Small casting spoon (silver/orange), Jerkbait (small) |
| Summer | 10 to 33 ft chart-limited; documented 20 to 60 ft | dawn | Deep basin (28 ft) | Jigging spoon vertical, Tube jig (smelt) |
| Fall | 8 to 30 ft | midday & dusk | Shoreline break (15 ft) | Casting spoon (orange/gold), Beadhead streamer |
| Winter | 8 to 33 ft chart-limited; documented 10 to 40 ft | midday & dawn | Deep basin (28 ft) | Jigging spoon (glow/silver), Tungsten jig + plastic |
Sunbiggin Tarn carries 3 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 28 ft down.
Sunbiggin Tarn is about 33 ft (10 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.
Anglers target brown trout, european perch, northern pike, arctic char on Sunbiggin Tarn. 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.
Shallow bay flat is the top-rated area: a weed flat in about 4 ft of water that rates prime for european perch in spring. 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.
Whinfell Tarn 9 mi · Haweswater Reservoir 12 mi · Cow Green Reservoir 16 mi · Balderhead Reservoir 16 mi · Selset Reservoir 16 mi · Brothers Water 17 mi · Ullswater 17 mi · Grassholme Reservoir 18 mi · Semer Water 20 mi · Blelham Tarn 20 mi · Windermere 20 mi · Grisedale Tarn 20 mi
See how Sunbiggin Tarn 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: Cumbria fishing maps (32 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.