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98-acre lake near Getchell. The lake tops out around 20 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. 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.
| 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 | dawn & dusk | Break off the point (18 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 6 to 20 ft | dawn & dusk | Break off the point (18 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 4 to 20 ft | dawn | Break off the point (18 ft) | Jigging spoon, Tube jig (white) |
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 2026-08-18.
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 here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target rainbow trout on Lake Cassidy.
Break off the point is the top-rated area: a drop-off in about 18 ft of water that rates prime for rainbow trout in winter. 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 rainbow trout lakes in Washington
More water nearby: Snohomish County fishing maps (28 charts). Browse all Washington fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.