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7-acre reservoir near Casper Region. The lake tops out around 8 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. Below is the species-by-species picture, pulled from the same data the map uses.
Drawn out, this is 6 acres of water rimmed by 0.9 miles of bank. A development index of 2.4 means a maze of bays and points: far more casting targets than a round bowl of the same size. All of it is shallow-zone water — under ~15 ft across the entire basin, so the food chain has the run of the place. Figure 0.3 mi of water from one end to the other. You'll find it in Natrona County. The nearest mapped water is Sheepherders Reservoir, 1 mi to the north.
The spring pattern is a shallow one: rainbow trout in 2 to 8 ft. The depth story barely changes: 2 to 8 ft through summer, 2 to 8 ft in winter. Top water on the chart: Break off the point, a drop-off in the 4 ft range, prime in winter. Time it for early morning and the evening. Summer baits: a dodger + spoon (deep troll) or a flutter spoon gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 2 to 8 ft | dawn & dusk | Break off the point (4 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 2 to 8 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 2 to 8 ft | dawn | Break off the point (4 ft) | Jigging spoon, Tube jig (white) |
In spring, largemouth bass run shallow here, mostly 2 to 8 ft. Summer keeps them at 2 to 8 ft, and they winter in 2 to 8 ft. Fall largemouth bass concentrate at Main-lake point, a prime-rated point around 8 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a texas-rigged 10" worm or a deep-diving crankbait most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dawn & dusk | Main-lake point (8 ft) | Spinnerbait, Chatterbait |
| Summer | 2 to 8 ft | dawn & dusk | Break off the point (4 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 2 to 8 ft | midday & dawn | Main-lake point (8 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 2 to 8 ft | midday | Break off the point (4 ft) | Blade bait, Jigging spoon |
Count 3 structure marks on this chart. The deepest, Main-lake point, sits near 8 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 Big Muddy Reservoir specifically, so confirm the current rules before you fish.
Check the official Wyoming fishing regulations →
Big Muddy Reservoir is about 8 ft (2 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, largemouth bass on Big Muddy Reservoir.
Main-lake point is the top-rated area: a point in about 8 ft of water that rates prime for largemouth bass in fall. Every other rated spot, per species and season, is on the map above.
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 Big Muddy 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.
Sheepherders Reservoir 1 mi · Camel Hump Reservoir 5 mi · Goldeneye Reservoir 17 mi · Bryan Stock Trail Pond (Lake Makenzie) 30 mi · North Platte River (Grey Reef) 37 mi · Big Muddy Pond 40 mi · Burlington Reservoir 55 mi · Beulah Belle Lake 56 mi · Pathfinder Reservoir 62 mi · Dome Rock Res 65 mi · Walker Jenkins Lake 67 mi · Shirley Basin Reservoir 70 mi
See how Big Muddy Reservoir stacks up: best largemouth bass lakes in Wyoming · best rainbow trout lakes in Wyoming
More water nearby: Natrona County fishing maps (7 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.