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55-acre lake near Bonner. The lake tops out around 36 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. Every species below gets its seasonal read from the same numbers driving the chart.
Round Lake maps at 51 acres behind 1.1 miles of shoreline. A shoreline index of 1.1 says round and simple: fish relate to depth changes here, not shoreline features. Roughly 39% of the water is 15 ft or less as modeled, the band where the food chain lives. Figure 0.4 mi of water from one end to the other, 0.3 mi at the beam. It sits in Bonner County. Its nearest charted neighbour, Shepherd Lake, is 5 mi to the east.
The spring pattern is a shallow one: cutthroat trout in 3 to 15 ft. Midsummer fish sit out in 10 to 35 ft before dropping to 9 to 36 ft for winter. The spot to know is Shoreline break, a drop-off in about 16 ft of water that rates prime for cutthroat trout in summer. Plan around early morning and the evening in the warm months. Summer baits: a trolled spoon (small) or an inline spinner gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | Shoreline break (16 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Shoreline break (16 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Shoreline break (16 ft) | Casting spoon, Inline spinner |
| Winter | 9 to 36 ft | dawn | Shoreline break (16 ft) | Small jigging spoon, Marabou jig |
Come spring, look for brook trout tight to the bank in 2 to 15 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 3 to 20 ft. Start at Shoreline break. It's a drop-off holding about 16 ft of water and rates prime come summer. Prime time lands in early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Shallow bay flat (4 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Shoreline break (16 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | open water | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shoreline break (16 ft) | Small jigging spoon, Tungsten jig + plastic |
When the water first warms, rainbow trout slide up into 5 to 20 ft. By summer they slide out to 8 to 30 ft, and by winter most fish are in 7 to 36 ft. If you only fish one area, make it Shoreline break: a drop-off around 16 ft that scores prime in winter. In summer the feeding windows fall in early morning and the evening. Keep a dodger + spoon (deep troll) or a flutter spoon rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shoreline break (16 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Shoreline break (16 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Shoreline break (16 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 7 to 36 ft | dawn | Shoreline break (16 ft) | Jigging spoon, Tube jig (white) |
Round Lake carries 5 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 31 ft down.
| Date | Species | Count | Size |
|---|---|---|---|
| May 19 | Rainbow Trout | 868 | ~13" |
| May 6 | Rainbow Trout | — | ~13" |
| Apr 21 | Rainbow Trout | — | ~13" |
| Mar 26 | Rainbow Trout | — | ~13" |
| Oct 27, 2025 | Rainbow Trout | 248 | ~13" |
| Oct 20, 2025 | Rainbow Trout | — | ~13" |
Source: Idaho Fish & Game stocking records, retrieved 2026-09-03.
Season dates, license requirements, and size and bag limits for Idaho waters are set by the Idaho Fish and Game — and special regulations can apply to Round Lake specifically, so confirm the current rules before you fish.
Check the official Idaho fishing regulations →
Round Lake is about 36 ft (11 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 cutthroat trout, brook trout, rainbow trout on Round Lake.
Shoreline break is the top-rated area: a drop-off in about 16 ft of water that rates prime for cutthroat trout in summer. The interactive chart above rates every spot for each species and season.
For cutthroat 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 Idaho Fish & Game stocking records records, Round Lake was most recently stocked May 19 with 868 rainbow trout. The full stocking history is listed above.
Fishing on Round Lake is regulated by the Idaho Fish and Game. Check the official Idaho regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Shepherd Lake 5 mi · Lake Pend Oreille 11 mi · Kelso Lake 11 mi · Blue Lake 12 mi · Marshall Lake 21 mi, WA · Antelope Lake 22 mi · Diamond Lake 26 mi, WA · South Skookum Lake 30 mi, WA · North Skookum Lake 30 mi, WA · Davis Lake 31 mi, WA · Sacheen Lake 31 mi, WA · Priest Lake 33 mi
See how Round Lake stacks up: best rainbow trout lakes in Idaho · best brook trout lakes in Idaho · best cutthroat trout lakes in Idaho
More water nearby: Bonner County fishing maps (6 charts). Browse all Idaho 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.