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8-acre lake near Sheridan Region. The lake tops out around 77 ft. Contours on this water are modeled from its actual shoreline and max depth. Good for finding likely water, never for navigation. Here's the year, species by species, as the scoring engine sees it.
The drawn water covers 8 acres wrapped in 0.4 miles of bank. At index 1.1 the outline is almost a bowl — read the depth changes, not the shoreline. About 7% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Johnson County claims this one. Its nearest charted neighbour, Lost Wilderness Lake, is 1 mi to the northwest.
When the water first warms, brook trout slide up into 2 to 15 ft. Summer is a 10 to 30 ft game here, winter a 3 to 20 ft one. Start at Break off the point. It's a drop-off holding about 35 ft of water and rates good come summer. The feeding windows run 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 (19 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (35 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (19 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | open water | Small jigging spoon, Tungsten jig + plastic |
Early season lake trout use the shallows, holding in 10 to 40 ft. Summer is a 23 to 77 ft game here, winter a 19 to 77 ft one. The chart's best answer is Deep basin — deep basin, 65 ft, prime for summer. Best bite is early morning. Tie on a white tube jig (deep) or a magnum spoon on downrigger and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (19 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 23 to 77 ft | dawn | Deep basin (65 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (19 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 19 to 77 ft | dawn | Deep basin (65 ft) | White tube jig, Airplane jig |
3 pieces of structure are mapped here — Deep basin, around 65 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for Wyoming waters are set by the Wyoming Game and Fish Department — and special regulations can apply to Thayer Lake specifically, so confirm the current rules before you fish.
Check the official Wyoming fishing regulations →
Thayer Lake is about 77 ft (23 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 brook trout, lake trout on Thayer Lake.
Deep basin is the top-rated area: a deep basin in about 65 ft of water that rates prime for lake trout in summer. Open the map above to see every rated spot for each 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 Thayer Lake is regulated by the Wyoming Game and Fish Department. Check the official Wyoming regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Lost Wilderness Lake 1 mi · Geneva Lake 1 mi · Golden Lake 1 mi · Crystal Lake 2 mi · Hope Lake 2 mi · Emerald Lake 3 mi · Rinehart Lake, Upper 3 mi · Upper Lake Of The Rough 3 mi · Rinehart Lake, Lower 3 mi · Robin Lake 3 mi · Horseshoe Lake 4 mi · Shell Lake 4 mi
See how Thayer Lake stacks up: best lake trout lakes in Wyoming · best brook trout lakes in Wyoming
More water nearby: Johnson County fishing maps (39 charts). Browse all Wyoming 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.