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78-acre lake in Beaverhead County, Montana. The lake tops out around 18 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. The season-by-season read for each species follows, from the map's own numbers.
When the water first warms, brook trout slide up into 2 to 15 ft. By summer they slide out to 5 to 18 ft, and by winter most fish are in 3 to 18 ft. If you only fish one area, make it Deep basin: a deep basin around 18 ft that scores prime in summer. In summer the feeding windows fall in early morning and the evening. Keep a small spoon fished deep or a trolled lake-clear wobbler + worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (14 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 5 to 18 ft | dawn & dusk | Deep basin (18 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (14 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 18 ft | dawn | Deep basin (18 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for rainbow trout tight to the bank in 5 to 18 ft. Through summer count on 5 to 18 ft; the winter hold is 4 to 18 ft. Start at Break off the point. It's a drop-off holding about 15 ft of water and rates prime come winter. Prime time lands in early morning and the evening. A dodger + spoon (deep troll) or a flutter spoon is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 18 ft | dawn & dusk | Main-lake point (14 ft) | Inline spinner (silver), Small spoon |
| Summer | 5 to 18 ft | dawn & dusk | Break off the point (15 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 5 to 18 ft | dawn & dusk | Main-lake point (14 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 4 to 18 ft | dawn | Break off the point (15 ft) | Jigging spoon, Tube jig (white) |
The chart marks 4 structure features on Kelly Reservioir; the deepest is Deep basin at about 18 ft.
Season dates, license requirements, and size and bag limits for Montana waters are set by the Montana Fish, Wildlife & Parks — and special regulations can apply to Kelly Reservioir specifically, so confirm the current rules before you fish.
Check the official Montana fishing regulations →
Kelly Reservioir is about 18 ft (5 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 brook trout, rainbow trout on Kelly Reservioir.
Break off the point is the top-rated area: a drop-off in about 15 ft of water that rates prime for rainbow trout in winter. Scroll up to the map for the complete spot list by species and season.
For brook 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.
Fishing on Kelly Reservioir is regulated by the Montana Fish, Wildlife & Parks. Check the official Montana regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Minneopa Lake 4 mi · Deerhead Lake 8 mi · Sawtooth Lake 8 mi · Tendoy Lake 13 mi · Rainbow Lake (Beaverhead) 13 mi · Lake Agnes 14 mi · Brownes Lake 15 mi · Beaverhead River 17 mi · Bear Lake (Beaverhead) 19 mi · Baldy Lake 25 mi · Clark Canyon Reservoir 25 mi · Sand Lake 26 mi
See how Kelly Reservioir stacks up: best rainbow trout lakes in Montana · best brook trout lakes in Montana
More water nearby: Beaverhead County fishing maps (24 charts). Browse all Montana 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.