Sulphurous Lake Depth Map & Fishing Spots (BC)

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Lake depth chart

Sulphurous Lake, BC

Max 154 ft

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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.

Depth · ft

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Recent catches at Sulphurous Lake

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Fishing Sulphurous Lake: what the data says

947-acre lake in Cariboo Regional District, British Columbia. The lake tops out around 154 ft. Bathymetry on this water is estimated from its real outline and maximum depth. Use it to shortlist water, then verify with your electronics — and never navigate by it. Below is the species-by-species picture, pulled from the same data the map uses.

The drawn water covers 947 acres wrapped in 10.3 miles of bank, with 2 islands in the mix. The 2.4 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. 18% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. Figure 3.2 mi of water from one end to the other, 1.2 mi at the beam. Cariboo Regional District claims this one. Hathaway Lake sits 2 mi north — the closest neighbouring chart.

Kokanee fishing at Sulphurous Lake

Come spring, look for kokanee tight to the bank in 10 to 30 ft. They move out to 30 to 70 ft in summer and finish the year down in 20 to 80 ft. If you only fish one area, make it Break off the point: a drop-off around 69 ft that scores prime in summer. Best bite is early morning. A dodger + pink/orange squid on downrigger or a kokanee bug + corn is the honest summer answer here.

Season	Depth	Best window	Start at	Go-to baits
Spring	10 to 30 ft	dawn	Deep basin (131 ft)	Small dodger + squid (pink), Wedding-ring spinner + corn
Summer	30 to 70 ft	dawn	Break off the point (69 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 (69 ft)	Small glow jig + corn or maggot, Tiny spoon

Lake Trout fishing at Sulphurous Lake

Spring lake trout on Sulphurous Lake hold shallow, usually 10 to 40 ft. They move out to 50 to 120 ft in summer and finish the year down in 20 to 80 ft. Put Main-lake point first on the milk run — a point near 39 ft that grades prime for spring. The feeding windows run early morning. The summer box starts with a white tube jig (deep) or a magnum spoon on downrigger.

Season	Depth	Best window	Start at	Go-to baits
Spring	10 to 40 ft	dawn & dusk	Main-lake point (39 ft)	Casting spoon over shoals, Jerkbait (shallow)
Summer	50 to 120 ft	dawn	Deep basin (131 ft)	White tube jig (deep), Magnum spoon on downrigger
Fall	10 to 50 ft	dusk & dawn	Main-lake point (39 ft)	Heavy casting spoon, Jigging rap over reefs
Winter	20 to 80 ft	dawn	Break off the point (69 ft)	White tube jig, Airplane jig

Rainbow Trout fishing at Sulphurous Lake

When the water first warms, rainbow trout slide up into 5 to 20 ft. Summer is an 8 to 30 ft game here, winter an 8 to 40 ft one. Start at Main-lake point. It's a point holding about 39 ft of water and rates prime come fall. The feeding windows run early morning and the evening. Keep a dodger + spoon (deep troll) or a flutter spoon rigged through the warm months.

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	Main-lake point (39 ft)	Casting spoon, Jerkbait over shoals
Winter	8 to 40 ft	dawn	Break off the point (69 ft)	Jigging spoon, Tube jig (white)

Notable structure

6 pieces of structure are mapped here — Deep basin, around 131 ft, is the deepest of them.

Deep basin: deep basin, around 131 ft
Break off the point: drop-off, around 69 ft
Main-lake point: point, around 39 ft
Secondary point: point, around 39 ft
Shallow bay flat: feeding flat, around 6 ft
Back-bay flat: feeding flat, around 6 ft

Public access & boat ramps

Sulphurous Lake — shore fishing site

Access data: British Columbia Recreation Sites and Trails - Recreation Sites Subset. Confirm conditions and fees locally before you launch.

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

Check the official British Columbia fishing regulations →

Common questions

How deep is Sulphurous Lake?

Sulphurous Lake is about 154 ft (47 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 Sulphurous Lake?

Anglers target kokanee, lake trout, rainbow trout on Sulphurous Lake.

Where is the best fishing spot on Sulphurous Lake?

Main-lake point is the top-rated area: a point in about 39 ft of water that rates prime for lake trout in spring. The interactive chart above rates every spot for each species and season.

When is the best time to fish Sulphurous Lake?

For kokanee, 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 Sulphurous Lake?

Fishing on Sulphurous 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

Hathaway Lake 2 mi · Deka Lake 2 mi · Apollo Lake 2 mi · Higgins Lake 3 mi · Parks Lake 3 mi · French Lake 4 mi · Carton Lake 4 mi · Balfour Lake 4 mi · Needa Lake 5 mi · Drewry Lake 6 mi · Bowers Lake 7 mi · Longbow Lake 7 mi

See how Sulphurous Lake stacks up: best rainbow trout lakes in British Columbia · best lake trout lakes in British Columbia · best kokanee lakes in British Columbia

More water nearby: Cariboo Regional District fishing maps (445 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.