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160-acre lake near Okanogan County. The lake tops out around 110 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Species by species, here's what the data says the year looks like.
Drawn out, this is 160 acres of water rimmed by 2.3 miles of bank. A shoreline index of 1.3 says round and simple: fish relate to depth changes here, not shoreline features. About 15% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 1 mi long by 0.3 mi wide at the broadest reach. You'll find it in Okanogan County. The nearest mapped water is Lost Lake, 3 mi to the north.
In spring, brook trout run shallow here, mostly 2 to 15 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. Break off the point is the standout, a drop-off at roughly 8 ft, rated prime for winter brook trout. Time it for early morning and the evening. You won't need more than a small spoon fished deep or a trolled lake-clear wobbler + worm most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (1 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (8 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (1 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (8 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for brown trout tight to the bank in 3 to 25 ft. Expect a summer slide to 25 to 60 ft, then a winter hold in 5 to 35 ft. Start at Break off the point. It's a drop-off holding about 8 ft of water and rates prime come winter. Prime time lands in after dark and early morning. A spoon at the thermocline or a deep stickbait (night) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Main-lake point (1 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 25 to 60 ft | night & dawn | Break off the point (8 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Break off the point (8 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | Break off the point (8 ft) | Jigging spoon, Small stickbait (slow) |
In spring, kokanee run shallow here, mostly 10 to 30 ft. Summer pushes them deeper, 30 to 70 ft, and winter fish settle into 20 to 80 ft. Break off the point is the standout, a drop-off at roughly 8 ft, rated good for fall kokanee. Time it for early morning. You won't need more than a dodger + pink/orange squid on downrigger or a kokanee bug + corn most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 30 ft | dawn | Break off the point (8 ft) | Small dodger + squid (pink), Wedding-ring spinner + corn |
| Summer | 30 to 70 ft | dawn | open water | Dodger + pink/orange squid on downrigger, Kokanee bug + corn |
| Fall | 5 to 40 ft | dawn | Break off the point (8 ft) | Dodger + squid (deeper red/purple), Small spoon |
| Winter | 20 to 80 ft | dawn | Break off the point (8 ft) | Small glow jig + corn or maggot, Tiny spoon |
Spring puts rainbow trout in skinny water — 5 to 20 ft is the zone. As the season builds they drop to 8 to 30 ft, wintering in 8 to 40 ft. Winter rainbow trout concentrate at Break off the point, a prime-rated drop-off around 8 ft. Warm-month bites cluster around early morning and the evening. A dodger + spoon (deep troll) or a flutter spoon covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Break off the point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (8 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Break off the point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (8 ft) | Jigging spoon, Tube jig (white) |
Start shallow in spring: smallmouth bass sit in 3 to 12 ft that time of year. Warm water sends them out to 10 to 30 ft; cold water stacks them in 20 to 45 ft. Top water on the chart: Break off the point, a drop-off in the 8 ft range, prime in fall. Fish it in early morning and the evening and you'll meet the bite. Throw a drop shot (goby/minnow) or a ned rig until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Main-lake point (1 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (8 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Break off the point (8 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Break off the point (8 ft) | Blade bait, Hair jig |
6 pieces of structure are mapped here — Deep basin, around 110 ft, is the deepest of them.
Access data: OpenStreetMap contributors (ODbL) — community-mapped launches. Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| Sep 17 | Rainbow trout | 2,500 | — |
| Sep 17 | Tiger Trout | 962 | — |
| Jun 2 | Kokanee | 25,000 | — |
| May 27 | Rainbow trout | 5,000 | — |
Source: WDFW fish-stocking reports, retrieved 2026-09-23.
Season dates, license requirements, and size and bag limits for Washington waters are set by the Washington Department of Fish and Wildlife — and special regulations can apply to Bonaparte Lake specifically, so confirm the current rules before you fish.
Check the official Washington fishing regulations →
Bonaparte Lake is about 110 ft (34 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target brook trout, brown trout, kokanee, rainbow trout, smallmouth bass on Bonaparte Lake.
Break off the point is the top-rated area: a drop-off in about 8 ft of water that rates prime for rainbow trout in winter. Every other rated spot, per species and season, is on the map above.
For brook 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.
Yes — per WDFW fish-stocking reports records, Bonaparte Lake was most recently stocked Sep 17 with 2,500 rainbow trout. The full stocking history is listed above.
Fishing on Bonaparte Lake is regulated by the Washington Department of Fish and Wildlife. Check the official Washington regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Lost Lake 3 mi · Sidley Lake 15 mi · Curlew Lake 18 mi · Whitestone Lake 19 mi · Wannacut Lake 22 mi · Osoyoos Lake 22 mi, WA/BC · Aeneas Lake 22 mi · Spectacle Lake 23 mi · Crawfish Lake 23 mi · Matthews Lake 24 mi, BC · Osoyoos Lake 24 mi, BC/WA · Conkle Lake 26 mi, BC
See how Bonaparte Lake stacks up: best smallmouth bass lakes in Washington · best rainbow trout lakes in Washington · best brown trout lakes in Washington · best brook trout lakes in Washington
More water nearby: Okanogan County fishing maps (21 charts). Browse all Washington fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. 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.