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Fishing Ullnasjön: what the data says
731-acre lake near Täby. The lake tops out around 15 ft. Depth here is modeled from the true shoreline and max depth rather than surveyed; use it to plan, not to navigate. What the data behind the map says about each species, season by season:
Traced from the shoreline, Ullnasjön runs 746 acres with 5.9 miles of edge. The shoreline is moderately structured (index 1.5) — enough points and pockets to pattern.
Gratis interaktiv fiskekarta — Ullnasjön, Sverige: ungefärliga djupkurvor ner till 5 m (15 fot), och de bästa fiskeplatserna för abborre och gös. Djupkartan är modellberäknad från sjöns verkliga strandlinje och största djup — använd den som vägledning, aldrig för navigation.
European Perch fishing at Ullnasjön
Spring puts european perch in skinny water — 3 to 12 ft is the zone. As the season builds they drop to 4 to 15 ft, wintering in 5 to 15 ft. Spring european perch concentrate at Shallow bay flat, a prime-rated weed flat around 3 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 (3 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 4 to 15 ft | dawn | Deep basin (13 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 5 to 15 ft | midday | Deep basin (13 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 5 to 15 ft | midday & dawn | Deep basin (13 ft) | Tungsten jig + maggots, Small balance jig |
Zander fishing at Ullnasjön
Spring puts zander in skinny water — 4 to 15 ft is the zone. There's no big seasonal slide here — summer means 5 to 15 ft, winter 5 to 15 ft. Fall zander concentrate at Break off the point, a prime-rated drop-off around 7 ft. Warm-month bites cluster around the evening and early morning. A vertical softbait over humps or a deep crankbait covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Main-lake point (8 ft) | Softbait on jighead (10-12 cm), Shallow crankbait at dusk |
| Summer | 5 to 15 ft | dusk & dawn | Break off the point (7 ft) | Vertical softbait over humps, Deep crankbait |
| Fall | 5 to 15 ft | dusk & night | Break off the point (7 ft) | Big softbait (12-16 cm) slow-rolled, Jigging spoon |
| Winter | 5 to 15 ft | dusk & dawn | Deep basin (13 ft) | Vertical jig / mormyshka with bait, Slow blade bait |
Notable structure
- Deep basin: deep basin, around 13 ft
- Main-lake point: point, around 8 ft
- Secondary point: point, around 8 ft
- Break off the point: drop-off, around 7 ft
- Shallow bay flat: weed flat, around 3 ft
- Back-bay flat: weed flat, around 3 ft
Ullnasjön fishing regulations
Season dates, license requirements, and size and bag limits for Sweden waters are set by the Svenska Fiskeregler (official Swedish rules service) — and special regulations can apply to Ullnasjön specifically, so confirm the current rules before you fish.
Check the official Sweden fishing regulations →
Common questions
How deep is Ullnasjön?
Ullnasjön is about 15 ft (5 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 Ullnasjön?
Anglers target zander, european perch on Ullnasjön.
Where is the best fishing spot on Ullnasjön?
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for european perch in spring. The interactive chart above rates every spot for each species and season.
When is the best time to fish Ullnasjön?
For european perch, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
What are the fishing regulations for Ullnasjön?
Fishing on Ullnasjön is regulated by the Svenska Fiskeregler (official Swedish rules service). Check the official Sweden regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Nearby waters
Rönningesjön 2 mi · Issjön 3 mi · Storträsket 3 mi · Säbyträsk 4 mi · Vallentunasjön 4 mi · Garnsviken 5 mi · Fjäturen 6 mi · Rösjön 6 mi · Ekebysjön 6 mi · Ösbysjön 6 mi · Drängsjön 7 mi · Norrviken 7 mi
See how Ullnasjön stacks up: best zander lakes in Sweden · best european perch lakes in Sweden
Browse all Sweden fishing maps or see every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.