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921-acre lake near Pinedale Region. The lake tops out around 282 ft. The depth picture is modeled, anchored to the true shoreline and the water's published max depth — a scouting aid, never a chart to run a boat by. Species by species, here's what the data says the year looks like.
On the chart, Halfmoon Lake draws 1,033 acres inside 9.8 miles of shoreline. That shoreline is heavily fingered (development index 2.2) — bays, points and pockets everywhere, which multiplies the fishable edge. About 16% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. The basin spans about 3 mi end to end and 1.4 mi across at its widest. The water lies in Sublette County. For a second option, Halfmoon Lake, Little lies 2 mi southeast.
In spring, lake trout run shallow here, mostly 10 to 40 ft. Summer pushes them deeper, 50 to 120 ft, and winter fish settle into 20 to 80 ft. Break off the point is the standout, a drop-off at roughly 127 ft, rated prime for summer lake trout. Time it for early morning. You won't need more than a white tube jig (deep) or a magnum spoon on downrigger most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (71 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 50 to 120 ft | dawn | Break off the point (127 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | open water | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Deep basin (240 ft) | White tube jig, Airplane jig |
In spring, rainbow trout run shallow here, mostly 5 to 20 ft. Midsummer fish sit out in 8 to 30 ft before dropping to 8 to 40 ft for winter. Spring rainbow trout concentrate at Shallow bay flat, a good-rated feeding flat around 6 ft. Fish it in early morning and the evening and you'll meet the bite. 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 | Shallow bay flat (6 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Shallow bay flat (6 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | open water | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (127 ft) | Jigging spoon, Tube jig (white) |
Spring puts brook trout in skinny water — 2 to 15 ft is the zone. Warm water sends them out to 10 to 30 ft; cold water stacks them in 3 to 20 ft. Shallow bay flat is the standout, a feeding flat at roughly 6 ft, rated good for spring brook trout. Plan around early morning and the evening in the warm months. A small spoon fished deep or a trolled lake-clear wobbler + worm covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Shallow bay flat (6 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | open water | 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 | Shallow bay flat (6 ft) | Small jigging spoon, Tungsten jig + plastic |
When the water first warms, brown trout slide up into 3 to 25 ft. Summer is a 25 to 60 ft game here, winter a 5 to 35 ft one. Start at Break off the point. It's a drop-off holding about 127 ft of water and rates good come summer. The feeding windows run after dark and early morning. Keep a spoon at the thermocline or a deep stickbait (night) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | open water | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 25 to 60 ft | night & dawn | Break off the point (127 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | open water | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | Break off the point (127 ft) | Jigging spoon, Small stickbait (slow) |
When the water first warms, cutthroat trout slide up into 3 to 15 ft. Summer is a 10 to 35 ft game here, winter a 10 to 40 ft one. Start at Break off the point. It's a drop-off holding about 127 ft of water and rates good come summer. The feeding windows run 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 | open water | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Break off the point (127 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (71 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Break off the point (127 ft) | Small jigging spoon, Marabou jig |
Spring lake whitefish on Halfmoon Lake hold shallow, usually 15 to 45 ft. By summer they slide out to 40 to 90 ft, and by winter most fish are in 25 to 70 ft. The chart's best answer is Deep basin — deep basin, 240 ft, good for summer. Prime time lands in early morning. The summer box starts with a blade bait vertical or a small jigging spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | Shallow bay flat (6 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 40 to 90 ft | dawn | Deep basin (240 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | open water | Small spoon (gold), Jig + plastic larva |
| Winter | 25 to 70 ft | midday & dawn | Deep basin (240 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Halfmoon Lake carries 7 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 240 ft down.
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 Halfmoon Lake specifically, so confirm the current rules before you fish.
Check the official Wyoming fishing regulations →
Halfmoon Lake is about 282 ft (86 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 lake trout, rainbow trout, brook trout, brown trout, cutthroat trout, lake whitefish on Halfmoon Lake.
Break off the point is the top-rated area: a drop-off in about 127 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 lake trout, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Halfmoon 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.
Halfmoon Lake, Little 2 mi · Fremont Lake 4 mi · Black Lake 4 mi · Burnt Lake 6 mi · Soda Lake 6 mi · Boulder Lake 7 mi · Ruff Lake 7 mi · Willow Lake 9 mi · North Fork Lake 12 mi · New Fork Lake, Upper 16 mi · Norman Lake 21 mi · Dons Lake 22 mi
See how Halfmoon Lake stacks up: best rainbow trout lakes in Wyoming · best lake trout lakes in Wyoming · best brown trout lakes in Wyoming · best brook trout lakes in Wyoming
More water nearby: Sublette County fishing maps (11 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.