Cultus Lake Depth Map (Fraser Valley Regional District, BC)

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Lake depth chart

Cultus Lake, BC

Max 137 ft

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Where to start

Chironomids (stillwater midges) window is on — see the hatch outlook

Hatch outlook

Chironomids (stillwater midges)Active window

Typical here: Sep 1 – Oct 31 · the smaller fall second season — hatches continue on mild afternoons

nymphearly morning, start of the day — fish the bloodworm ON the bottom — 4–6 inches off the mud before the emergence starts
pupathe cool morning hours are prime — as the emergence builds, slide the pupa up to 12–15 inches off bottom under the indicator; a little wind chop does the jigging

Concentrates by DEPTH BAND and mud type, not a fixed spot: roughly 20–25 ft in spring, deeper midsummer, in against the feeder creeks in summer heat, 5–25 ft in fall. Match the band.

This one translates almost perfectly: a slip float with a 1/64–1/100 oz midge-pattern jig set 4–15 inches off bottom over a mud flat, dead-sticked with the chop doing the work. Depth control is everything — no moving lure imitates a hanging pupa; the float rig IS the technique.

The event happens over open mud flats alongside weedlines, channels and basin edges; feeder-creek mouths in summer heat

Water boatman fall flightsActive window

Typical here: Sep 1 – Oct 31 · fall mating flights on calm sunny days — 'raindrops hitting the water'; a smaller spring flight is documented right after ice-off

adultmiddday-ish on calm, sunny fall days — the fishable moment is the splashdown: boatmen dive in headfirst trailing an air bubble and make repeated trips back to the surface — a fly or lure that dives nose-first on the drop imitates exactly this

Takes are seldom subtle — trout ravage boatmen as they hit the water and during their subsurface runs.

Tailor-made for hardware: a small 1/16 oz silver-bellied spoon or jig cast AT the rings of a splashdown sinks headfirst exactly like the natural — twitch-pause it back through the top few feet. On flight days fan-cast the shallow weed margins.

The event happens over near-shore shallows, weed beds and shoal margins on calm sunny fall afternoons

Scuds (Gammarus shrimp)Active window

Typical here: Jan 1 – Dec 31 · year-round — the biomass behind the Kamloops fishery's growth rates; most important early spring and again in fall as dying weed cover exposes them

adultall day, year-round — best when weed cover is thin (early spring, late fall) — quick 1-inch 'shrimpy' strips along the weed beds and marl; in fall a subtle slow retrieve just off the bottom

Not an event — the pantry. Scud water is why these lakes grow big rainbows; fish them when nothing is hatching.

No hardware imitates a half-inch freshwater shrimp well — this is a jig game: a small olive/tan micro-jig under a slip float worked along the weed edges, or fished just off bottom in fall. Otherwise treat scud water as the signal that the lake grows big fish.

The event happens over weed beds, chara and marl flats and shoal-zone debris in calcium-rich lakes

Leeches (stillwater staple)Active window

Typical here: Jan 1 – Dec 31 · year-round — the go-to at ice-off before the chironomids start, and again through fall

adultany hour; low light and the cool ends of the season fish best — slow steady hand-twist or 2–3 inch pulls — in fall a slow steady pull outfishes a fast strip — or hang a balanced leech under an indicator

Baseline food, not an event — the honest 'nothing is hatching' answer on every interior lake, bracketing the season at ice-off and late fall.

The most spin-friendly item on the menu, with agency-documented tactics: slow-troll a Worden's Triple Teazer or Panther Martin along the drop-offs (the BC agency's own recommendation), or fish a black or olive marabou jig under a slip float over the shoal edge.

The event happens over shoal-zone vegetation, woody debris and rock, sliding to the drop-offs by day

Next on this water

Callibaetis (Speckled Dun) · mayflyApr 15 – Jul 31 · in ~7 months

Damselfly migration · forageJun 1 – Jul 31 · in ~9 months

Traveling sedge (giant lake caddis) · caddisJun 10 – Aug 15 · in ~9 months

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours on this water are approximations. Never use for navigation. Always check local regulations.

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Recent catches at Cultus Lake

Shared by DepthScout anglers. Exact spots stay private, always.

No shared catches here yet — be the first.Log a catch from the map above and share it to put Cultus Lake on the board.

Fishing Cultus Lake: what the data says

1,566-acre lake in Fraser Valley Regional District, British Columbia. The lake tops out around 137 ft. Contours on this water are modeled from its actual shoreline and max depth. Good for finding likely water, never for navigation. What follows comes from the same scoring engine that paints the spots above.

The drawn water covers 1,566 acres wrapped in 8.5 miles of bank. With a 1.5 development index there's bank structure worth casting at, in moderation. About 4% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Figure 3 mi of water from one end to the other, 1.4 mi at the beam. It sits in Fraser Valley Regional District. Its nearest charted neighbour, Sardis Pond, is 5 mi to the north.

Cutthroat Trout fishing at Cultus Lake

Spring puts cutthroat trout in skinny water — 3 to 15 ft is the zone. Warm water sends them out to 10 to 35 ft; cold water stacks them in 10 to 40 ft. Main-lake point is the standout, a point at roughly 34 ft, rated prime for summer cutthroat trout. Plan around early morning and the evening in the warm months. A trolled spoon (small) or an inline spinner covers the summer program.

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	Main-lake point (34 ft)	Trolled spoon (small), Inline spinner
Fall	5 to 25 ft	dawn & dusk	Main-lake point (34 ft)	Casting spoon, Inline spinner
Winter	10 to 40 ft	dawn	Main-lake point (34 ft)	Small jigging spoon, Marabou jig

Kokanee fishing at Cultus Lake

Spring kokanee on Cultus Lake hold shallow, usually 10 to 30 ft. By summer they slide out to 30 to 70 ft, and by winter most fish are in 20 to 80 ft. The chart's best answer is Break off the point — drop-off, 62 ft, prime for summer. Prime time lands in early morning. The summer box starts with a dodger + pink/orange squid on downrigger or a kokanee bug + corn.

Season	Depth	Best window	Start at	Go-to baits
Spring	10 to 30 ft	dawn	Deep basin (116 ft)	Small dodger + squid (pink), Wedding-ring spinner + corn
Summer	30 to 70 ft	dawn	Break off the point (62 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	Break off the point (62 ft)	Small glow jig + corn or maggot, Tiny spoon

Smallmouth Bass fishing at Cultus Lake

Come spring, look for smallmouth bass tight to the bank in 3 to 12 ft. They move out to 10 to 30 ft in summer and finish the year down in 20 to 45 ft. If you only fish one area, make it Main-lake point: a point around 34 ft that scores good in summer. Best bite is early morning and the evening. A drop shot (goby/minnow) or a ned rig is the honest summer answer here.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	dawn & dusk	open water	Ned rig, Tube jig
Summer	10 to 30 ft	dawn & dusk	Main-lake point (34 ft)	Drop shot (goby/minnow), Ned rig
Fall	8 to 25 ft	midday & dawn	Main-lake point (34 ft)	Jerkbait, Blade bait
Winter	20 to 45 ft	midday	Break off the point (62 ft)	Blade bait, Hair jig

Rainbow Trout fishing at Cultus Lake

Early season rainbow trout use the shallows, holding in 5 to 20 ft. Expect a summer slide to 8 to 30 ft, then a winter hold in 8 to 40 ft. Put Main-lake point first on the milk run — a point near 34 ft that grades prime for fall. In summer the feeding windows fall in early morning and the evening. Tie on a dodger + spoon (deep troll) or a flutter spoon and you're in the game.

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	Main-lake point (34 ft)	Dodger + spoon (deep troll), Flutter spoon
Fall	10 to 35 ft	dawn & dusk	Main-lake point (34 ft)	Casting spoon, Jerkbait over shoals
Winter	8 to 40 ft	dawn	Break off the point (62 ft)	Jigging spoon, Tube jig (white)

Lake Whitefish fishing at Cultus Lake

The spring pattern is a shallow one: lake whitefish in 15 to 45 ft. As the season builds they drop to 40 to 90 ft, wintering in 25 to 70 ft. Top water on the chart: Break off the point, a drop-off in the 62 ft range, prime in summer. Time it for early morning. Summer baits: a blade bait vertical or a small jigging spoon gets it done.

Season	Depth	Best window	Start at	Go-to baits
Spring	15 to 45 ft	midday & dawn	Shallow bay flat (6 ft)	Small jig + waxworm, Blade bait (small)
Summer	40 to 90 ft	dawn	Break off the point (62 ft)	Blade bait vertical, Small jigging spoon
Fall	8 to 30 ft	dusk	Main-lake point (34 ft)	Small spoon (gold), Jig + plastic larva
Winter	25 to 70 ft	midday & dawn	Break off the point (62 ft)	Jigging spoon + bead chain, Tungsten jig + waxie

Notable structure

The chart marks 6 structure features on Cultus Lake; the deepest is Deep basin at about 116 ft.

Deep basin: deep basin, around 116 ft
Break off the point: drop-off, around 62 ft
Main-lake point: point, around 34 ft
Secondary point: point, around 34 ft
Shallow bay flat: feeding flat, around 6 ft
Back-bay flat: feeding flat, around 6 ft

Cultus 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 Cultus Lake specifically, so confirm the current rules before you fish.

Check the official British Columbia fishing regulations →

Common questions

How deep is Cultus Lake?

Cultus Lake is about 137 ft (42 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 Cultus Lake?

Anglers target cutthroat trout, kokanee, smallmouth bass, rainbow trout, lake whitefish on Cultus Lake.

Where is the best fishing spot on Cultus Lake?

Main-lake point is the top-rated area: a point in about 34 ft of water that rates prime for cutthroat trout in summer. Open the map above to see every rated spot for each species and season.

When is the best time to fish Cultus 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 Cultus Lake?

Fishing on Cultus 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

Sardis Pond 5 mi · Ryder Lake 6 mi · Chadsey Lake 9 mi · Lake Errock 12 mi · Hatzic Lake 14 mi · Mill Lake 15 mi · Elbow Lake 15 mi · Stacey Lake 15 mi · Pierce Lake 16 mi · Allan Lake 17 mi · Campbell Lake 18 mi · Morris Lake 19 mi

See how Cultus Lake stacks up: best smallmouth bass lakes in British Columbia · best rainbow trout lakes in British Columbia · best kokanee lakes in British Columbia · best lake whitefish lakes in British Columbia

More water nearby: Fraser Valley Regional District fishing maps (71 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.