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Fishing Union Lake: what the data says
633-acre lake in British Columbia. The lake tops out around 262 ft. Contours on this water are modeled from its actual shoreline and max depth. Good for finding likely water, never for navigation. What the data behind the map says about each species, season by season:
On the chart, Union Lake draws 631 acres inside 6.7 miles of shoreline. The shoreline is moderately structured (index 1.9) — enough points and pockets to pattern. Roughly 1% of the water is 15 ft or less as modeled, the band where the food chain lives.
Cutthroat Trout fishing at Union Lake
When the water first warms, cutthroat trout slide up into 3 to 15 ft. By summer they slide out to 10 to 35 ft, and by winter most fish are in 10 to 40 ft. If you only fish one area, make it Break off the point: a drop-off around 118 ft that scores good in summer. In summer the feeding windows fall in early morning and the evening. Keep a trolled spoon (small) or a inline spinner rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | open water | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Break off the point (118 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (66 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Break off the point (118 ft) | Small jigging spoon, Marabou jig |
Kokanee fishing at Union Lake
Spring puts kokanee in skinny water — 10 to 30 ft is the zone. As the season builds they drop to 30 to 70 ft, wintering in 20 to 80 ft. Spring kokanee concentrate at Deep basin, a good-rated deep basin around 223 ft. Warm-month bites cluster around early morning. A dodger + pink/orange squid on downrigger or a kokanee bug + corn covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 30 ft | dawn | Deep basin (223 ft) | Small dodger + squid (pink), Wedding-ring spinner + corn |
| Summer | 30 to 70 ft | dawn | Deep basin (223 ft) | Dodger + pink/orange squid on downrigger, Kokanee bug + corn |
| Fall | 5 to 40 ft | dawn | open water | Dodger + squid (deeper red/purple), Small spoon |
| Winter | 20 to 80 ft | dawn | Deep basin (223 ft) | Small glow jig + corn or maggot, Tiny spoon |
Rainbow Trout fishing at Union Lake
In spring, rainbow trout run shallow here, mostly 5 to 20 ft. Summer pushes them deeper, 8 to 30 ft, and winter fish settle into 8 to 40 ft. Shallow bay flat is the standout, a weed flat at roughly 6 ft, rated good for spring rainbow trout. Time it for early morning and the evening. You won't need more than a dodger + spoon (deep troll) or a flutter spoon most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shallow bay flat (6 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Shallow bay flat (6 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | open water | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (118 ft) | Jigging spoon, Tube jig (white) |
Notable structure
- Deep basin: deep basin, around 223 ft
- Break off the point: drop-off, around 118 ft
- Main-lake point: point, around 66 ft
- Secondary point: point, around 66 ft
- Shallow bay flat: weed flat, around 6 ft
- Back-bay flat: weed flat, around 6 ft
Union Lake fishing regulations
Season dates, license requirements, and size and bag limits for British Columbia waters are set by the BC freshwater fishing synopsis — and special regulations can apply to Union Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Common questions
How deep is Union Lake?
Union Lake is about 262 ft (80 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 Union Lake?
Anglers target rainbow trout, kokanee, cutthroat trout on Union Lake.
Where is the best fishing spot on Union Lake?
Shallow bay flat is the top-rated area: a weed flat in about 6 ft of water that rates good for rainbow trout in spring. The interactive chart above rates every spot for each species and season.
When is the best time to fish Union Lake?
For cutthroat trout, the summer bite is best in early morning and the evening. 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 Union Lake?
Fishing on Union Lake is regulated by the BC freshwater fishing synopsis. Check the official British Columbia regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Nearby waters
Sarah Lake 11 mi · Toon Lake 19 mi · Bill Lake 19 mi · Marion Lake 20 mi · Leverson Lake 24 mi · Kergin Lake 25 mi · Lachmach Lake 28 mi · Minerva Lake 28 mi · Prudhomme Lake 28 mi · Rainbow Lake 31 mi · Diana Lake 31 mi · Arden Lake 32 mi
See how Union Lake stacks up: best rainbow trout lakes in British Columbia · best kokanee lakes in British Columbia · best cutthroat trout lakes in British Columbia
Browse all British Columbia fishing maps or see every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.