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700-acre lake near Diamond Lake. The lake tops out around 55 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Below is the species-by-species picture, pulled from the same data the map uses.
Drawn out, this is 700 acres of water rimmed by 4.6 miles of bank. At index 1.2 the outline is almost a bowl — read the depth changes, not the shoreline. Littoral water — the productive band under ~15 ft — makes up 31% of this chart. Tip to tip the water measures near 2 mi with a 0.7-mi widest point. The water lies in Pend Oreille County. Closest neighbour on DepthScout: Sacheen Lake, 6 mi west of here.
Spring brown trout on Diamond Lake hold shallow, usually 3 to 25 ft. They move out to 17 to 55 ft in summer and finish the year down in 5 to 35 ft. Put Break off the point first on the milk run — a drop-off near 45 ft that grades prime for summer. The feeding windows run after dark and early morning. The summer box starts with a spoon at the thermocline or a deep stickbait (night).
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Main-lake point (3 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 17 to 55 ft chart-limited; documented 25 to 60 ft | night & dawn | Break off the point (45 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Main-lake point (3 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | Break off the point (45 ft) | Jigging spoon, Small stickbait (slow) |
Spring cutthroat trout on Diamond Lake hold shallow, usually 3 to 15 ft. They move out to 10 to 35 ft in summer and finish the year down in 10 to 40 ft. Put Main-lake point first on the milk run — a point near 3 ft that grades prime for spring. The feeding windows run early morning and the evening. The summer box starts with a trolled spoon (small) or an inline spinner.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | Main-lake point (3 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Break off the point (45 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (3 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Break off the point (45 ft) | Small jigging spoon, Marabou jig |
Start shallow in spring: rainbow trout sit in 5 to 20 ft that time of year. Warm water sends them out to 8 to 30 ft; cold water stacks them in 8 to 40 ft. Top water on the chart: Break off the point, a drop-off in the 45 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a dodger + spoon (deep troll) or a flutter spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (3 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Shallow bay flat (8 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (3 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (45 ft) | Jigging spoon, Tube jig (white) |
Start shallow in spring: brown bullhead sit in 2 to 8 ft that time of year. Summer pushes them deeper, 3 to 12 ft, and winter fish settle into 10 to 25 ft. The spot to know is Shallow bay flat, a weed flat in about 8 ft of water that rates prime for brown bullhead in spring. Warm-month bites cluster around after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Shallow bay flat (8 ft) | |
| Summer | 3 to 12 ft | night & dusk | Shallow bay flat (8 ft) | |
| Fall | 5 to 15 ft | dusk | Shallow bay flat (8 ft) | |
| Winter | 10 to 25 ft | midday | open water |
In spring, crappie run shallow here, mostly 2 to 8 ft. Summer pushes them deeper, 10 to 25 ft, and winter fish settle into 15 to 35 ft. Shallow bay flat is the standout, a weed flat at roughly 8 ft, rated prime for spring crappie. Time it for early morning and the evening. You won't need more than a jig trolled/spider-rigged or a small crankbait (trolled) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (8 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 10 to 25 ft | dawn & dusk | Shallow bay flat (8 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Shallow bay flat (8 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 15 to 35 ft | midday | open water | Tungsten jig + soft plastic, Tiny jigging spoon |
Spring puts largemouth bass in skinny water — 2 to 10 ft is the zone. As the season builds they drop to 8 to 20 ft, wintering in 15 to 35 ft. Spring largemouth bass concentrate at Shallow bay flat, a prime-rated weed flat around 8 ft. Warm-month bites cluster around early morning and the evening. A texas-rigged 10" worm or a deep-diving crankbait covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (8 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Shallow bay flat (8 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Main-lake point (3 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 15 to 35 ft | midday | open water | Blade bait, Jigging spoon |
Diamond Lake also holds pumpkinseed (2 to 10 ft in summer), yellow perch (10 to 30 ft in summer). Pick any of them on the map above for rated spots and bait picks.
5 pieces of structure are mapped here — Deep basin, around 55 ft, is the deepest of them.
Access data: Washington WDFW — Water Access Sites. Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| May 12 | Rainbow trout | 40,000 | — |
| Apr 22 | Rainbow trout | 2,314 | — |
| Apr 22 | Rainbow trout | 12,676 | — |
| Apr 21 | Rainbow trout | 14,023 | — |
| Apr 17 | Brown Trout | 5,890 | — |
| Apr 17 | Brown Trout | 5,605 | — |
| Apr 17 | Rainbow trout | 184 | — |
| Apr 17 | Rainbow trout | 15,000 | — |
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 Diamond Lake specifically, so confirm the current rules before you fish.
Check the official Washington fishing regulations →
Diamond Lake is about 55 ft (17 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 brown trout, cutthroat trout, rainbow trout, brown bullhead, crappie, largemouth bass, pumpkinseed, yellow perch on Diamond Lake.
Shallow bay flat is the top-rated area: a weed flat in about 8 ft of water that rates prime for largemouth bass in spring. Every other rated spot, per species and season, is on the map above.
For brown trout, the summer bite is best in after dark and early morning. 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, Diamond Lake was most recently stocked May 12 with 40,000 rainbow trout. The full stocking history is listed above.
Fishing on Diamond 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.
Sacheen Lake 6 mi · Davis Lake 8 mi · Marshall Lake 11 mi · Fan Lake 11 mi · Eloika Lake 11 mi · Deer Lake 18 mi · South Skookum Lake 18 mi · North Skookum Lake 19 mi · Blue Lake 20 mi, ID · Loon Lake 21 mi · Jumpoff Joe Lake 23 mi · Kelso Lake 24 mi, ID
See how Diamond Lake stacks up: best largemouth bass lakes in Washington · best crappie lakes in Washington · best rainbow trout lakes in Washington · best yellow perch lakes in Washington
More water nearby: Pend Oreille County fishing maps (11 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.