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17-acre reservoir near Laramie Region. The lake tops out around 12 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. What the data behind the map says about each species, season by season:
Traced from the shoreline, Shirley Basin Reservoir runs 15 acres with 0.9 miles of edge. The shoreline is moderately structured (index 1.6) — enough points and pockets to pattern. All of it is shallow-zone water — under ~15 ft across the entire basin, so the food chain has the run of the place. Tip to tip the water measures near 0.3 mi with a 0.2-mi widest point. The water lies in Carbon County. Closest neighbour on DepthScout: Walker Jenkins Lake, 12 mi northeast of here.
In spring, rainbow trout run shallow here, mostly 3 to 12 ft. Summer keeps them at 3 to 12 ft, and they winter in 2 to 12 ft. Winter rainbow trout concentrate at Break off the point, a prime-rated drop-off around 5 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 | 3 to 12 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 3 to 12 ft | dawn & dusk | Break off the point (5 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 3 to 12 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 2 to 12 ft | dawn | Break off the point (5 ft) | Jigging spoon, Tube jig (white) |
The chart marks 3 structure features on Shirley Basin Reservoir; the deepest is Deep basin at about 10 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 Shirley Basin Reservoir specifically, so confirm the current rules before you fish.
Check the official Wyoming fishing regulations →
Shirley Basin Reservoir is about 12 ft (4 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 rainbow trout on Shirley Basin Reservoir.
Break off the point is the top-rated area: a drop-off in about 5 ft of water that rates prime for rainbow trout in winter. Open the map above to see every rated spot for each species and season.
For rainbow 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 Shirley Basin Reservoir 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.
Walker Jenkins Lake 12 mi · Dome Rock Res 21 mi · Seminoe Reservoir 28 mi · Pathfinder Reservoir 32 mi · North Platte River (Grey Reef) 34 mi · Wheatland Reservoir 3 42 mi · Bryan Stock Trail Pond (Lake Makenzie) 43 mi · Beulah Belle Lake 45 mi · Big Muddy Pond 46 mi · Diamond Lake 46 mi · Crater Lake 52 mi · Sand Lake 55 mi
See how Shirley Basin Reservoir stacks up: best rainbow trout lakes in Wyoming
More water nearby: Carbon County fishing maps (33 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.