Lost Lake Depth Map & Fishing Spots (ID)

Skip to interactive depth chart

Lake depth chart

Lost Lake, ID

Max 70 ft

Today's read

Where to start

Grasshoppers (east-side summer) window is on — see the hatch outlook

Hatch outlook

Grasshoppers (east-side summer)Active window

Typical here: Jul 1 – Oct 15 · until the hard frosts of mid-October; on the Missouri, August hoppers fish mid-river, not the banks

adultall day in high summer, best when afternoon wind knocks bugs onto the water

Pulls fish to the windward grassy banks and edges for months — fish the bank the wind blows ONTO.

The friendliest crossover of the summer: on lakes, drift the windward bank with a bubble-and-foam-hopper — the bubble's splash doesn't hurt a hopper presentation. On rivers, the same rig dead-drifted along the undercut grass banks, or small gold spinners under the banks between rises.

The event happens over grassy banks, undercut edges and windward shorelines

Next on this water

Spruce Moth · terrestrialsJul 20 – Aug 31 · in ~11 months

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours on this water are approximations. Never use for navigation. Always check local regulations.

Loading depth chart…

Recent catches at Lost Lake

Shared by DepthScout anglers. Exact spots stay private, always.

No shared catches here yet — be the first.Log a catch from the map above and share it to put Lost Lake on the board.

Fishing Lost Lake: what the data says

27-acre lake near Shoshone. The lake tops out around 70 ft. Bathymetry on this water is estimated from its real outline and maximum depth. Use it to shortlist water, then verify with your electronics — and never navigate by it. What follows comes from the same scoring engine that paints the spots above.

The drawn water covers 25 acres wrapped in 0.8 miles of bank. The basin is a simple one (shoreline index 1.1) — close to a bowl, so the structure on the chart matters more than the bank. Roughly 16% of the water is 15 ft or less as modeled, the band where the food chain lives. Call it 0.3 mi long by 0.2 mi wide at the broadest reach. Shoshone County claims this one. Dworshak Reservoir sits 25 mi south — the closest neighbouring chart.

Cutthroat Trout fishing at Lost Lake

The spring pattern is a shallow one: cutthroat trout in 3 to 15 ft. As the season builds they drop to 10 to 35 ft, wintering in 10 to 40 ft. Top water on the chart: Shoreline break, a drop-off in the 32 ft range, prime in summer. Time it for early morning and the evening. 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	open water	Inline spinner (silver/gold), Small spoon
Summer	10 to 35 ft	dawn & dusk	Shoreline break (32 ft)	Trolled spoon (small), Inline spinner
Fall	5 to 25 ft	dawn & dusk	Shoreline break (32 ft)	Casting spoon, Inline spinner
Winter	10 to 40 ft	dawn	Shoreline break (32 ft)	Small jigging spoon, Marabou jig

Notable structure

Lost Lake carries 4 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 60 ft down.

Deep basin: deep basin, around 60 ft
Shoreline break: drop-off, around 32 ft
Shallow bay flat: feeding flat, around 6 ft
Back-bay flat: feeding flat, around 6 ft

Lost Lake stocking report

Date	Species	Count	Size
Sep 19, 2025	Cutthroat Trout - Westslope	—	~1.5"

Source: Idaho Fish & Game stocking records, retrieved 2026-09-03.

Lost Lake fishing regulations

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 Lost Lake specifically, so confirm the current rules before you fish.

Check the official Idaho fishing regulations →

Common questions

How deep is Lost Lake?

Lost Lake is about 70 ft (21 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.

What fish are in Lost Lake?

Anglers target cutthroat trout on Lost Lake.

Where is the best fishing spot on Lost Lake?

Shoreline break is the top-rated area: a drop-off in about 32 ft of water that rates prime for cutthroat trout in summer. Open the map above to see every rated spot for each species and season.

When is the best time to fish Lost Lake?

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.

Is Lost Lake stocked with fish?

Yes — per Idaho Fish & Game stocking records records, Lost Lake was most recently stocked Sep 19, 2025 with cutthroat trout - westslope. The full stocking history is listed above.

What are the fishing regulations for Lost Lake?

Fishing on Lost 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.

Nearby waters

Dworshak Reservoir 25 mi · Silver Lake 27 mi, MT · Crystal Lake (Mineral) 30 mi, MT · Lower Glidden Lake 32 mi · Moore Lake (Mineral) 34 mi, MT · Cliff Lake (Mineral) 36 mi, MT · Diamond Lake (Mineral) 37 mi, MT · Bonanza Lake, Upper 39 mi, MT · Lost Lake (Mineral) 39 mi, MT · Bull Run Lake 40 mi · Oregon Lake, Middle 41 mi, MT · Rose Lake 41 mi

See how Lost Lake stacks up: best cutthroat trout 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.