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7-acre lake near Jackson Region. The lake tops out around 15 ft. This chart interpolates between a real shoreline and a known maximum depth. It will point you at likely water, but it is not a navigation product. What follows comes from the same scoring engine that paints the spots above.
There are 0.4 miles of drawn shoreline to work. A shoreline index of 1.3 says round and simple: fish relate to depth changes here, not shoreline features. Fremont County claims this one. Its nearest charted neighbour, Rainbow Lake, is 0 mi to the north.
Start shallow in spring: cutthroat trout sit in 3 to 15 ft that time of year. They don't go far with the seasons — 4 to 15 ft covers summer, 4 to 15 ft covers winter. The spot to know is Break off the point, a drop-off in about 7 ft of water that rates prime for cutthroat trout in summer. Warm-month bites cluster around early morning and the evening. Throw a trolled spoon (small) or an inline spinner until the fish tell you otherwise.
| 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 | 4 to 15 ft | dawn & dusk | Break off the point (7 ft) | Trolled spoon (small), Inline spinner |
| Fall | 3 to 15 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Inline spinner |
| Winter | 4 to 15 ft | dawn | Break off the point (7 ft) | Small jigging spoon, Marabou jig |
When the water first warms, brook trout slide up into 2 to 15 ft. There's no big seasonal slide here — summer means 5 to 15 ft, winter 2 to 15 ft. Start at Deep basin. It's a deep basin holding about 13 ft of water and rates prime 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 (8 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 5 to 15 ft | dawn & dusk | Deep basin (13 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (8 ft) | Small spoon (orange), Spinner |
| Winter | 2 to 15 ft | dawn | Deep basin (13 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for rainbow trout tight to the bank in 4 to 15 ft. Through summer count on 4 to 15 ft; the winter hold is 3 to 15 ft. If you only fish one area, make it Break off the point: a drop-off around 7 ft that scores prime in winter. Best bite is 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 | 4 to 15 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 4 to 15 ft | dawn & dusk | Break off the point (7 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 4 to 15 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 3 to 15 ft | dawn | Break off the point (7 ft) | Jigging spoon, Tube jig (white) |
Count 3 structure marks on this chart. The deepest, Deep basin, sits near 13 ft.
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 Bertha Lake (Blue Lake) specifically, so confirm the current rules before you fish.
Check the official Wyoming fishing regulations →
Bertha Lake (Blue Lake) is about 15 ft (5 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, brook trout, rainbow trout on Bertha Lake (Blue Lake).
Break off the point is the top-rated area: a drop-off in about 7 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.
Fishing on Bertha Lake (Blue 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.
Rainbow Lake 0 mi · Golden Lake 0 mi · Mackinaw Lake 1 mi · Lewis Lake 4 mi · Crater Lake 5 mi · Enos Lake 16 mi · Elk Ranch Reservoir 25 mi · Lake Of The Woods 27 mi · Two Ocean Lake 27 mi · Soda Lake 27 mi · Hidden Lake (Hell & Gone) 28 mi · Snake River (Jackson) 33 mi
See how Bertha Lake (Blue Lake) stacks up: best rainbow trout lakes in Wyoming · best brook trout lakes in Wyoming · best cutthroat trout lakes in Wyoming
More water nearby: Fremont County fishing maps (53 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.