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14-acre lake near Federal Way. The lake tops out around 25 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. Every species below gets its seasonal read from the same numbers driving the chart.
Mirror Lake maps at 14 acres behind 0.6 miles of shoreline. Its 1.1 shoreline index means few bank features; the contours below do the pattern work. Roughly 57% of the water is 15 ft or less, the band where the food chain lives. It sits in King County. Its nearest charted neighbour, Steel Lake, is 2 mi to the east.
Early season rainbow trout use the shallows, holding in 5 to 20 ft. Expect a summer slide to 7 to 25 ft, then a winter hold in 5 to 25 ft. Put Break off the point first on the milk run — a drop-off near 14 ft that grades prime for winter. In summer the feeding windows fall in early morning and the evening. Tie on a dodger + spoon (deep troll) or a flutter spoon and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (7 ft) | Inline spinner (silver), Small spoon |
| Summer | 7 to 25 ft | dawn & dusk | Break off the point (14 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 7 to 25 ft | dawn & dusk | Main-lake point (7 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 5 to 25 ft | dawn | Break off the point (14 ft) | Jigging spoon, Tube jig (white) |
Mirror Lake carries 3 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 25 ft down.
| Date | Species | Count | Size |
|---|---|---|---|
| Jul 25, 2025 | Rainbow trout | 570 | — |
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 Mirror Lake specifically, so confirm the current rules before you fish.
Check the official Washington fishing regulations →
Mirror Lake is about 25 ft (8 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 Mirror Lake.
Break off the point is the top-rated area: a drop-off in about 14 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 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, Mirror Lake was most recently stocked Jul 25, 2025 with 570 rainbow trout. The full stocking history is listed above.
Fishing on Mirror 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.
Steel Lake 2 mi · Lake Killarney 3 mi · Lake Fenwick 5 mi · Angle Lake 8 mi · Lake Holm 10 mi · Little Wapato Lake 10 mi · Lake Tapps 10 mi · Pipe Lake 14 mi · Lake Lucerne 14 mi · Steilacoom Lake 14 mi · Lake Sawyer 14 mi · Gravelly Lake 15 mi
See how Mirror Lake stacks up: best rainbow trout lakes in Washington
More water nearby: King County fishing maps (18 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.