Lake depth chart
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Recent public catches load as you reach this section.
98-acre lake near Getchell. The lake tops out around 20 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.
On the chart, Lake Cassidy draws 98 acres inside 1.6 miles of shoreline. Nearly circular (index 1.1), so the story is the bottom, not the bank. The shallow band under 15 ft claims about 75% of the surface — that's where the groceries are. End to end it runs roughly 0.6 mi, about 0.3 mi across. You'll find it in Snohomish County. For a second option, Lake Stevens lies 4 mi south.
Spring puts rainbow trout in skinny water — 5 to 20 ft is the zone. Summer fish stay in 5 to 20 ft, and winter fish hold in 4 to 20 ft. Winter rainbow trout concentrate at Break off the point, a prime-rated drop-off around 18 ft. Warm-month bites cluster around early morning and the evening. A dodger + spoon (deep troll) or a flutter spoon covers the summer program.
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 | 5 to 20 ft | dawn & dusk | Break off the point (18 ft) | Inline spinner (silver), Small spoon |
| Summer | 5 to 20 ft chart-limited; documented 8 to 30 ft | dawn & dusk | Break off the point (18 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 6 to 20 ft chart-limited; documented 10 to 35 ft | dawn & dusk | Break off the point (18 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 4 to 20 ft chart-limited; documented 8 to 40 ft | dawn | Break off the point (18 ft) | Jigging spoon, Tube jig (white) |
In spring, bluegill run shallow here, mostly 1 to 6 ft. Midsummer fish sit out in 4 to 15 ft before dropping to 6 to 20 ft for winter. Spring bluegill concentrate at Shallow bay flat, a prime-rated weed flat around 5 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a small sponge spider (fly) or a micro tube jig most summer days.
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 | 1 to 6 ft | midday & dusk | Shallow bay flat (5 ft) | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Shallow bay flat (5 ft) | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Shallow bay flat (5 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 20 ft chart-limited; documented 10 to 25 ft | midday | Deep basin (20 ft) | Tungsten ice jig + plastic, Tiny spoon |
In spring, brown bullhead run shallow here, mostly 2 to 8 ft. Midsummer fish sit out in 3 to 12 ft before dropping to 6 to 20 ft for winter. Winter brown bullhead concentrate at Deep basin, a prime-rated deep basin around 20 ft. Fish it in after dark and the evening and you'll meet the bite.
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 | 2 to 8 ft | dusk & night | Shallow bay flat (5 ft) | |
| Summer | 3 to 12 ft | night & dusk | Shallow bay flat (5 ft) | |
| Fall | 5 to 15 ft | dusk | Shallow bay flat (5 ft) | |
| Winter | 6 to 20 ft chart-limited; documented 10 to 25 ft | midday | Deep basin (20 ft) |
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. Warm water sends them out to 6 to 20 ft; cold water stacks them in 6 to 20 ft. Top water on the chart: Deep basin, a deep basin in the 20 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a jig trolled/spider-rigged or a small crankbait (trolled) until the fish tell you otherwise.
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 | 2 to 8 ft | midday & dawn | Shallow bay flat (5 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 6 to 20 ft chart-limited; documented 10 to 25 ft | dawn & dusk | Break off the point (18 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Break off the point (18 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 6 to 20 ft chart-limited; documented 15 to 35 ft | midday | Deep basin (20 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
Come spring, look for cutthroat trout tight to the bank in 3 to 15 ft. Expect a summer slide to 6 to 20 ft, then a winter hold in 5 to 20 ft. Start at Break off the point. It's a drop-off holding about 18 ft of water and rates prime come summer. Prime time lands in early morning and the evening. A trolled spoon (small) or an inline spinner is the honest summer answer here.
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 15 ft | dawn & dusk | Main-lake point (3 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 6 to 20 ft chart-limited; documented 10 to 35 ft | dawn & dusk | Break off the point (18 ft) | Trolled spoon (small), Inline spinner |
| Fall | 4 to 20 ft chart-limited; documented 5 to 25 ft | dawn & dusk | Main-lake point (3 ft) | Casting spoon, Inline spinner |
| Winter | 5 to 20 ft chart-limited; documented 10 to 40 ft | dawn | Break off the point (18 ft) | Small jigging spoon, Marabou jig |
The spring pattern is a shallow one: largemouth bass in 2 to 10 ft. Midsummer fish sit out in 8 to 20 ft before dropping to 6 to 20 ft for winter. The spot to know is Shallow bay flat, a weed flat in about 5 ft of water that rates prime for largemouth bass in spring. Plan around early morning and the evening in the warm months. Summer baits: a texas-rigged 10" worm or a deep-diving crankbait gets it done.
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 | 2 to 10 ft | dawn & dusk | Shallow bay flat (5 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (18 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 | 6 to 20 ft chart-limited; documented 15 to 35 ft | midday | Break off the point (18 ft) | Blade bait, Jigging spoon |
Lake Cassidy also holds pumpkinseed (2 to 10 ft in summer), yellow perch (6 to 20 ft in summer). Pick any of them on the map above for rated spots and bait picks.
The chart marks 5 structure features on Lake Cassidy; the deepest is Deep basin at about 20 ft.
Access data: Washington WDFW — Water Access Sites. Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| Mar 16 | Rainbow trout | 3,100 | — |
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 Lake Cassidy specifically, so confirm the current rules before you fish.
Check the official Washington fishing regulations →
Lake Cassidy is about 20 ft (6 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 rainbow trout, bluegill, brown bullhead, crappie, cutthroat trout, largemouth bass, pumpkinseed, yellow perch on Lake Cassidy.
Shallow bay flat is the top-rated area: a weed flat in about 5 ft of water that rates prime for bluegill in spring. The map above holds the full rated-spot list for every 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.
Yes — per WDFW fish-stocking reports records, Lake Cassidy was most recently stocked Mar 16 with 3,100 rainbow trout. The full stocking history is listed above.
Fishing on Lake Cassidy 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.
Lake Stevens 4 mi · Bosworth Lake 6 mi · Panther Lake 8 mi · Blackmans Lake 8 mi · Flowing Lake 9 mi · Lake Loma 9 mi · Lake Roesiger 10 mi · Storm Lake 10 mi · Crabapple Lake 10 mi · Lake Ki 10 mi · Lake Shoecraft 11 mi · Lake Goodwin 11 mi
See how Lake Cassidy stacks up: best largemouth bass lakes in Washington · best crappie lakes in Washington · best bluegill lakes in Washington · best rainbow trout lakes in Washington
More water nearby: Snohomish County fishing maps (28 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.