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Rating depth structure for rainbow trout.
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14-acre pond in Waukesha County, Wisconsin. The lake tops out around 50 ft. These contours are modeled — built from the real shoreline and the water's maximum depth — so read them as a guide, never as navigation. Species by species, here's what the data says the year looks like.
Traced from the shoreline, Lannon County Park Pond runs 14 acres with 0.7 miles of edge. Nearly circular (index 1.3), so the story is the bottom, not the bank. Roughly 18% of the water is 15 ft or less as modeled, the band where the food chain lives. You'll find it in Waukesha County. Closest neighbour on DepthScout: Amy Bell Lake, 4 mi north of here.
The spring pattern is a shallow one: rainbow trout in 5 to 20 ft. As the season builds they drop to 8 to 30 ft, wintering in 8 to 40 ft. Top water on the chart: Shoreline break, a drop-off in the 23 ft range, prime in winter. Time it for early morning and the evening. Summer baits: a dodger + spoon (deep troll) or a flutter spoon gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shallow bay flat (6 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Shoreline break (23 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Shoreline break (23 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Shoreline break (23 ft) | Jigging spoon, Tube jig (white) |
Count 4 structure marks on this chart. The deepest, Deep basin, sits near 43 ft.
| Date | Species | Count | Size |
|---|---|---|---|
| 2025* | Rainbow Trout (yearling) | 3,376 | ~8.8" |
| 2024* | Rainbow Trout (yearling) | 3,500 | ~9" |
* Approximate date (agency reports month or season only). Source: Wisconsin DNR fish-stocking summary, retrieved 2026-08-18.
Season dates, license requirements, and size and bag limits for Wisconsin waters are set by the Wisconsin DNR — and special regulations can apply to Lannon County Park Pond specifically, so confirm the current rules before you fish.
Check the official Wisconsin fishing regulations →
Lannon County Park Pond is about 50 ft (15 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
Anglers target rainbow trout on Lannon County Park Pond. These come from the Wisconsin DNR's per-lake fish listing; where the DNR lists a group (panfish, catfish, trout) the specific species are resolved from Wisconsin's fish distribution by the lake's location, depth and habitat.
Shoreline break is the top-rated area: a drop-off in about 23 ft of water that rates prime for rainbow trout in winter. The interactive chart above rates every spot for each 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 Wisconsin DNR fish-stocking summary records, Lannon County Park Pond was most recently stocked 2025 with 3,376 rainbow trout (yearling). The full stocking history is listed above.
Fishing on Lannon County Park Pond is regulated by the Wisconsin DNR. Check the official Wisconsin regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Amy Bell Lake 4 mi · Bark Lake 5 mi · Lake Five 6 mi · Merton Millpond 7 mi · Lake Keesus 7 mi · Little Friess Lake 8 mi · Friess Lake 8 mi · Loew Lake 8 mi · Hickey Lake 8 mi · Monches Millpond 9 mi · Pewaukee Lake 9 mi · Beaver Lake 10 mi
See how Lannon County Park Pond stacks up: best rainbow trout lakes in Wisconsin
More water nearby: Waukesha County fishing maps (61 charts). Browse all Wisconsin fishing maps or see every water on DepthScout. 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.