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Rating depth structure for walleye.
Recent public catches load as you reach this section.
19,133-acre reservoir near Sinclair. A North Platte canyon reservoir in the Seminoe Mountains. Trout on the rocky shorelines, walleye working the flats. The lake tops out around 206 ft. What you see is a modeled chart: the shoreline is real, the max depth is published, and the contours between are estimated. Plan with it; don't navigate by it. The season-by-season read for each species follows, from the map's own numbers.
Seminoe Reservoir's chart carries 81.2 miles of bank — 7 islands included. An index of 6.6 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. 33% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. Call it 8.2 mi long by 6.8 mi wide at the broadest reach. The water lies in Carbon County. The nearest mapped water is Dome Rock Res, 16 mi to the north.
When the water first warms, walleye slide up into 4 to 15 ft. Summer is a 15 to 35 ft game here, winter a 20 to 40 ft one. Start at Medicine Bow River inflow. It's an inflow / creek mouth holding about 8 ft of water and rates prime come spring. The feeding windows run the evening and early morning. Keep a crawler harness on bottom bouncer or a deep crankbait (trolled) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Medicine Bow River inflow (8 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Sharp break (14 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Sharp break (14 ft) | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Sharp break (14 ft) | Jigging spoon + minnow head, Rattle bait |
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 Medicine Bow River inflow, a prime-rated inflow / creek mouth around 8 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 | Medicine Bow River inflow (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Medicine Bow River inflow (8 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Shoreline point (9 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Sharp break (14 ft) | Jigging spoon, Tube jig (white) |
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 Medicine Bow River inflow. It's an inflow / creek mouth holding about 8 ft of water and rates prime come spring. 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 | Medicine Bow River inflow (8 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 25 to 60 ft | night & dawn | Main-lake point (52 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Medicine Bow River inflow (8 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | Medicine Bow River inflow (8 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 Medicine Bow River inflow. It's an inflow / creek mouth holding about 8 ft of water and rates prime come spring. 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 | Medicine Bow River inflow (8 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Sharp break (14 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Shoreline point (9 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Sharp break (14 ft) | Small jigging spoon, Marabou jig |
Seminoe Reservoir carries 13 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 175 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 Seminoe Reservoir specifically, so confirm the current rules before you fish.
Check the official Wyoming fishing regulations →
Seminoe Reservoir is about 206 ft (63 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 walleye, rainbow trout, brown trout, cutthroat trout on Seminoe Reservoir.
Medicine Bow River inflow is the top-rated area: an inflow / creek mouth in about 8 ft of water that rates prime for walleye in spring. Every other rated spot, per species and season, is on the map above.
For walleye, the summer bite is best in the evening and 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 Seminoe 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.
Dome Rock Res 16 mi · Pathfinder Reservoir 20 mi · Shirley Basin Reservoir 28 mi · Beulah Belle Lake 34 mi · Teton Res 39 mi · Walker Jenkins Lake 40 mi · Saratoga Lake 44 mi · Good Reservoir 1 46 mi · North Platte River (Grey Reef) 48 mi · Rawlins City Res 51 mi · Turpin Creek Res 52 mi · Diamond Lake 53 mi
See how Seminoe Reservoir stacks up: best walleye lakes in Wyoming · best rainbow trout lakes in Wyoming · best brown trout lakes in Wyoming · best cutthroat trout lakes in Wyoming
More water nearby: Carbon County fishing maps (33 charts). Browse all Wyoming fishing maps. 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.