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Rating depth structure for largemouth bass.
Shared by DepthScout anglers. Exact spots stay private, always.
85-acre reservoir near Franklin. The lake tops out around 31 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. Here is how the season plays out for each species, straight from the data behind the map.
On the chart, Lamont Reservoir draws 77 acres inside 2.4 miles of shoreline. The shoreline is moderately structured (index 2) — enough points and pockets to pattern. About 76% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. The basin spans about 0.7 mi end to end and 0.3 mi across at its widest. You'll find it in Franklin County. Closest neighbour on DepthScout: Foster Reservoir, 2 mi northwest of here.
When the water first warms, cutthroat trout slide up into 3 to 15 ft. By summer they slide out to 9 to 31 ft, and by winter most fish are in 8 to 31 ft. If you only fish one area, make it Break off the point: a drop-off around 14 ft that scores prime in summer. In summer the feeding windows fall in early morning and the evening. Keep a trolled spoon (small) or an inline spinner rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 9 to 31 ft | dawn & dusk | Break off the point (14 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Inline spinner |
| Winter | 8 to 31 ft | dawn | Break off the point (14 ft) | Small jigging spoon, Marabou jig |
In spring, rainbow trout run shallow here, mostly 5 to 20 ft. Summer pushes them deeper, 8 to 30 ft, and winter fish settle into 6 to 31 ft. Break off the point is the standout, a drop-off at roughly 14 ft, rated prime for winter rainbow trout. Time it for early morning and the evening. You won't need more than a dodger + spoon (deep troll) or a flutter spoon most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (14 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 9 to 31 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 6 to 31 ft | dawn | Break off the point (14 ft) | Jigging spoon, Tube jig (white) |
Spring puts kokanee in skinny water — 10 to 30 ft is the zone. As the season builds they drop to 9 to 31 ft, wintering in 8 to 31 ft. Spring kokanee concentrate at Deep basin, a prime-rated deep basin around 26 ft. Warm-month bites cluster around early morning. A dodger + pink/orange squid on downrigger or a kokanee bug + corn covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 30 ft | dawn | Deep basin (26 ft) | Small dodger + squid (pink), Wedding-ring spinner + corn |
| Summer | 9 to 31 ft | dawn | Deep basin (26 ft) | Dodger + pink/orange squid on downrigger, Kokanee bug + corn |
| Fall | 4 to 31 ft | dawn | Deep basin (26 ft) | Dodger + squid (deeper red/purple), Small spoon |
| Winter | 8 to 31 ft | dawn | Deep basin (26 ft) | Small glow jig + corn or maggot, Tiny spoon |
Start shallow in spring: largemouth bass sit in 2 to 10 ft that time of year. Warm water sends them out to 8 to 20 ft; cold water stacks them in 9 to 31 ft. Top water on the chart: Shallow bay flat, a weed flat in the 4 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a texas-rigged 10" worm or a deep-diving crankbait until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Shallow bay flat (4 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (14 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Main-lake point (8 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 9 to 31 ft | midday | Break off the point (14 ft) | Blade bait, Jigging spoon |
Spring puts muskellunge in skinny water — 3 to 12 ft is the zone. Warm water sends them out to 8 to 25 ft; cold water stacks them in 9 to 31 ft. Break off the point is the standout, a drop-off at roughly 14 ft, rated prime for fall muskellunge. Plan around the evening and early morning in the warm months. A double-10 bucktail or a topwater (walk-the-dog / creeper) covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Shallow bay flat (4 ft) | Smaller bucktail (#8 blades), 6" glide bait |
| Summer | 8 to 25 ft | dusk & dawn | Main-lake point (8 ft) | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Fall | 8 to 30 ft | midday & dusk | Break off the point (14 ft) | Big rubber (Bull Dawg style), 10"+ glide bait |
| Winter | 9 to 31 ft | midday | Deep basin (26 ft) | Large rubber, crawled slow |
Spring puts bluegill in skinny water — 1 to 6 ft is the zone. Warm water sends them out to 4 to 15 ft; cold water stacks them in 10 to 25 ft. Shallow bay flat is the standout, a weed flat at roughly 4 ft, rated prime for spring bluegill. Plan around early morning and the evening in the warm months. A small sponge spider (fly) or a micro tube jig covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Shallow bay flat (4 ft) | 1/32 oz jig + micro plastic, Tiny popper (evenings) |
| Summer | 4 to 15 ft | dawn & dusk | Shallow bay flat (4 ft) | Small sponge spider (fly), Micro tube jig |
| Fall | 6 to 18 ft | midday | Break off the point (14 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 10 to 25 ft | midday | Deep basin (26 ft) | Tungsten ice jig + plastic, Tiny spoon |
The chart marks 6 structure features on Lamont Reservoir; the deepest is Deep basin at about 26 ft.
| Date | Species | Count | Size |
|---|---|---|---|
| Mar 11 | 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 Lamont Reservoir specifically, so confirm the current rules before you fish.
Check the official Idaho fishing regulations →
Lamont Reservoir is about 31 ft (9 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, rainbow trout, kokanee, largemouth bass, muskellunge, bluegill on Lamont Reservoir.
Break off the point is the top-rated area: a drop-off in about 14 ft of water that rates prime for cutthroat trout in summer. Scroll up to the map for the complete spot list by 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, Lamont Reservoir was most recently stocked Mar 11 with rainbow trout. The full stocking history is listed above.
Fishing on Lamont Reservoir 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.
Foster Reservoir 2 mi · Treasureton Reservoir 9 mi · Oneida Narrows Reservoir 13 mi · Newton Reservoir 17 mi, UT · Bear Lake 26 mi, UT/ID · Hyrum Reservoir 34 mi, UT · Porcupine Reservoir 41 mi, UT · Mantua Reservoir 42 mi, UT · Stone Reservoir 45 mi · Birch Creek Reservoir 49 mi, UT · Willard Bay Reservoir 52 mi, UT · Chesterfield Reservoir 55 mi
See how Lamont Reservoir stacks up: best largemouth bass lakes in Idaho · best bluegill lakes in Idaho · best rainbow trout lakes in Idaho · best kokanee lakes in Idaho
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.