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685-acre reservoir in Sevier County, Utah. The lake tops out around 21 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. Species by species, here's what the data says the year looks like.
Traced from the shoreline, Johnson Reservoir runs 544 acres with 4 miles of edge. Its 1.2 shoreline index means few bank features; the contours below do the pattern work. About 73% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Figure 1.3 mi of water from one end to the other, 1 mi at the beam. The water lies in Sevier County. Closest neighbour on DepthScout: Fish Lake, 5 mi southwest of here.
In spring, muskellunge run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 6 to 21 ft, and winter fish settle into 6 to 21 ft. Break off the point is the standout, a drop-off at roughly 9 ft, rated prime for fall muskellunge. Time it for the evening and early morning. You won't need more than a double-10 bucktail or a topwater (walk-the-dog / creeper) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Shallow bay flat (3 ft) | Smaller bucktail (#8 blades), 6" glide bait |
| Summer | 6 to 21 ft | dusk & dawn | Main-lake point (8 ft) | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Fall | 6 to 21 ft | midday & dusk | Break off the point (9 ft) | Big rubber (Bull Dawg style), 10"+ glide bait |
| Winter | 6 to 21 ft | midday | Deep basin (18 ft) | Large rubber, crawled slow |
Come spring, look for yellow perch tight to the bank in 3 to 12 ft. Expect a summer slide to 6 to 21 ft, then a winter hold in 6 to 21 ft. Start at Shallow bay flat. It's a weed flat holding about 3 ft of water and rates prime come spring. Prime time lands in early morning. A drop-shot micro plastics or a small spoon tipped with worm is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 6 to 21 ft | dawn | Deep basin (18 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 6 to 21 ft | midday | Deep basin (18 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 6 to 21 ft | midday & dawn | Deep basin (18 ft) | Tungsten jig + spikes, Rattle spoon (small) |
The chart marks 8 structure features on Johnson Reservoir; the deepest is Deep basin at about 18 ft.
Access data: Utah DNR — Boat Ramps. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Utah waters are set by the Utah Division of Wildlife Resources — and special regulations can apply to Johnson Reservoir specifically, so confirm the current rules before you fish.
Check the official Utah fishing regulations →
Johnson Reservoir is about 21 ft (6 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 muskellunge, yellow perch on Johnson Reservoir.
Break off the point is the top-rated area: a drop-off in about 9 ft of water that rates prime for muskellunge in fall. Open the map above to see every rated spot for each species and season.
For muskellunge, 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 Johnson Reservoir is regulated by the Utah Division of Wildlife Resources. Check the official Utah regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Fish Lake 5 mi · Mill Meadow Reservoir 8 mi · Forsyth Reservoir 8 mi · Koosharem Reservoir 11 mi · Otter Creek Reservoir 34 mi · Piute Reservoir 37 mi · Ferron Reservoir 38 mi · Nine Mile Reservoir 39 mi · Duck Fork Reservoir 40 mi · Lower Bowns Reservoir 40 mi · Palisade Reservoir 41 mi · Millsite Reservoir 41 mi
See how Johnson Reservoir stacks up: best muskellunge lakes in Utah · best yellow perch lakes in Utah
Browse all Utah 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.