Sign inSign up free Sign inSign up free Sign inSign up freeLake depth chart
Today's read
Rating depth structure for rainbow trout.
Recent public catches load as you reach this section.
44-acre lake in Bulkley-Nechako Regional District, British Columbia. The lake tops out around 27 ft. Contours on this water are modeled from its actual shoreline and max depth. Good for finding likely water, never for navigation. The rest of this page walks each species through its year, using the map's own scoring.
Sponge Lake maps at 44 acres behind 1.4 miles of shoreline. A middling shoreline index (1.5) gives it some bays to work without being a maze. About 74% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Figure 0.5 mi of water from one end to the other, 0.3 mi at the beam. Bulkley-Nechako Regional District claims this one. Nuphar Lake sits 1 mi north — the closest neighbouring chart.
Come spring, look for rainbow trout tight to the bank in 5 to 20 ft. They move out to 7 to 27 ft in summer and finish the year down in 5 to 27 ft. If you only fish one area, make it Break off the point: a drop-off around 12 ft that scores prime in winter. Best bite is early morning and the evening. A dodger + spoon (deep troll) or a flutter spoon is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 7 to 27 ft | dawn & dusk | Break off the point (12 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 8 to 27 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 5 to 27 ft | dawn | Break off the point (12 ft) | Jigging spoon, Tube jig (white) |
6 pieces of structure are mapped here — Deep basin, around 23 ft, is the deepest of them.
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 Sponge Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Sponge Lake is about 27 ft (8 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 rainbow trout on Sponge Lake.
Break off the point is the top-rated area: a drop-off in about 12 ft of water that rates prime for rainbow trout in winter. Open the map above to see every rated spot for each species and season.
For rainbow 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.
Fishing on Sponge 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.
Nuphar Lake 1 mi · Packrat Lake 1 mi · Ling Lake 1 mi · Division Lake 3 mi · Pinkut Lake 3 mi · Augier Lake 4 mi · Nellian Lake 7 mi · Burns Lake 10 mi · Decker Lake 10 mi · Taltapin Lake 12 mi · Co-Op Lake 14 mi · Guyishton Lake 15 mi
See how Sponge Lake stacks up: best rainbow trout lakes in British Columbia
More water nearby: Bulkley-Nechako Regional District fishing maps (324 charts). Browse all British Columbia fishing maps or 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.