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Grey Reef to Casper. The trophy tailwater rainbows of central Wyoming. The river tops out around 10 ft. Bathymetry on this water is estimated from its real outline and maximum depth. Use it to shortlist water, then verify with your electronics — and never navigate by it. The rest of this page walks each species through its year, using the map's own scoring.
North Platte River (Grey Reef) maps at 1,114 acres behind 74.8 miles of shoreline. The 16 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. The whole water is littoral — nothing here runs deeper than ~15 ft, so it's all weed-and-bait territory. Figure 22.6 mi of water from one end to the other, 5.5 mi at the beam. Natrona County claims this one. Bryan Stock Trail Pond (Lake Makenzie) sits 14 mi northeast — the closest neighbouring chart.
Spring rainbow trout on North Platte River (Grey Reef) hold shallow, usually 3 to 10 ft. Depth-wise the year is flat: 3 to 10 ft in summer, 2 to 10 ft once it turns cold. Put Current seam (mile 5.0) first on the milk run — a current seam near 6 ft that grades prime for spring. The feeding windows run early morning and the evening. The summer box starts with a dodger + spoon (deep troll) or a flutter spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 10 ft | dawn & dusk | Current seam (mile 5.0) (6 ft) | Inline spinner (silver), Small spoon |
| Summer | 3 to 10 ft | dawn & dusk | Current seam (mile 5.0) (6 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 3 to 10 ft | dawn & dusk | Current seam (mile 5.0) (6 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 2 to 10 ft | dawn | Current seam (mile 5.0) (6 ft) | Jigging spoon, Tube jig (white) |
In spring, brown trout run shallow here, mostly 1 to 10 ft. Summer keeps them at 3 to 10 ft, and they winter in 1 to 10 ft. Current seam (mile 5.0) is the standout, a current seam at roughly 6 ft, rated prime for summer brown trout. Time it for after dark and early morning. You won't need more than a spoon at the thermocline or a deep stickbait (night) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 10 ft | dawn & dusk | McFarland Number 3 Dam tailrace (9 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 3 to 10 ft | night & dawn | Current seam (mile 5.0) (6 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 2 to 10 ft | dusk & dawn | McFarland Number 3 Dam tailrace (9 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 1 to 10 ft | dawn | McFarland Number 3 Dam tailrace (9 ft) | Jigging spoon, Small stickbait (slow) |
Structure-wise the chart holds 18 features, led in depth by McFarland Number 3 Dam tailrace at roughly 9 ft.
Access data: OpenStreetMap contributors (ODbL) — community-mapped launches. Confirm conditions and fees locally before you launch.
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 North Platte River (Grey Reef) specifically, so confirm the current rules before you fish.
Check the official Wyoming fishing regulations →
North Platte River (Grey Reef) is about 10 ft (3 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, brown trout on North Platte River (Grey Reef).
Current seam (mile 5.0) is the top-rated area: a current seam in about 6 ft of water that rates prime for rainbow trout in spring. The map above holds the full rated-spot list for every 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 North Platte River (Grey Reef) 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.
Bryan Stock Trail Pond (Lake Makenzie) 14 mi · Goldeneye Reservoir 24 mi · Big Muddy Pond 25 mi · Dome Rock Res 32 mi · Walker Jenkins Lake 32 mi · Pathfinder Reservoir 33 mi · Shirley Basin Reservoir 34 mi · Beulah Belle Lake 36 mi · Big Muddy Reservoir 37 mi · Sheepherders Reservoir 37 mi · Camel Hump Reservoir 41 mi · Seminoe Reservoir 48 mi
See how North Platte River (Grey Reef) stacks up: best rainbow trout lakes in Wyoming · best brown 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.