Sign inSign up free Sign inSign up free Sign inSign up freeShared by DepthScout anglers. Exact spots stay private, always.
360-acre reservoir in Morgan County, Utah. The lake tops out around 128 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. The rest of this page walks each species through its year, using the map's own scoring.
Drawn out, this is 369 acres of water rimmed by 8.9 miles of bank. The 3.3 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. About 49% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Figure 2.6 mi of water from one end to the other, 1.5 mi at the beam. The water lies in Morgan County. The nearest mapped water is Causey Reservoir, 12 mi to the northwest.
Spring cutthroat trout on Lost Creek Reservoir hold shallow, usually 3 to 15 ft. They move out to 10 to 35 ft in summer and finish the year down in 10 to 40 ft. Put Creek inflow first on the milk run — an inflow / creek mouth near 8 ft that grades prime for spring. The feeding windows run early morning and the evening. The summer box starts with a trolled spoon (small) or an inline spinner.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | Creek inflow (8 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Main-lake point (32 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Creek inflow (8 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Main-lake point (32 ft) | Small jigging spoon, Marabou jig |
Start shallow in spring: rainbow trout sit in 5 to 20 ft that time of year. Warm water sends them out to 8 to 30 ft; cold water stacks them in 8 to 40 ft. Top water on the chart: Creek inflow, an inflow / creek mouth in the 8 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a dodger + spoon (deep troll) or a flutter spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Creek inflow (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Creek inflow (8 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (32 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Creek inflow (8 ft) | Jigging spoon, Tube jig (white) |
Start shallow in spring: splake sit in 5 to 25 ft that time of year. Summer pushes them deeper, 25 to 60 ft, and winter fish settle into 10 to 45 ft. The spot to know is Break off the point, a drop-off in about 58 ft of water that rates prime for splake in summer. Warm-month bites cluster around early morning and the evening. Throw a trolled spoon at the thermocline or a white tube jig (deep) until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | Creek inflow (8 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 25 to 60 ft | dawn & dusk | Break off the point (58 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (32 ft) | Casting spoon, Jerkbait |
| Winter | 10 to 45 ft | dawn | Break off the point (58 ft) | Jigging spoon tipped with minnow head, Small white tube |
The spring pattern is a shallow one: kokanee in 10 to 30 ft. Midsummer fish sit out in 30 to 70 ft before dropping to 20 to 80 ft for winter. The spot to know is Creek inflow, an inflow / creek mouth in about 8 ft of water that rates prime for kokanee in fall. Plan around early morning in the warm months. Summer baits: a dodger + pink/orange squid on downrigger or a kokanee bug + corn gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 30 ft | dawn | Deep basin (109 ft) | Small dodger + squid (pink), Wedding-ring spinner + corn |
| Summer | 30 to 70 ft | dawn | Break off the point (58 ft) | Dodger + pink/orange squid on downrigger, Kokanee bug + corn |
| Fall | 5 to 40 ft | dawn | Creek inflow (8 ft) | Dodger + squid (deeper red/purple), Small spoon |
| Winter | 20 to 80 ft | dawn | Break off the point (58 ft) | Small glow jig + corn or maggot, Tiny spoon |
In spring, white bass & hybrids run shallow here, mostly 3 to 15 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 20 to 40 ft. Creek inflow is the standout, an inflow / creek mouth at roughly 8 ft, rated prime for spring white bass & hybrids. Time it for early morning and the evening. You won't need more than a jigging spoon or a topwater (when schooling) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | midday & dawn | Creek inflow (8 ft) | Rooster tail / inline spinner, Curly-tail jig (white/chartreuse) |
| Summer | 10 to 30 ft | dawn & dusk | Main-lake point (32 ft) | Jigging spoon, Topwater (when schooling) |
| Fall | 8 to 25 ft | midday & dawn | Creek inflow (8 ft) | Small blade bait, Jigging spoon |
| Winter | 20 to 40 ft | midday | Deep basin (109 ft) | Jigging spoon, Blade bait (vertical) |
Structure-wise the chart holds 9 features, led in depth by Deep basin at roughly 109 ft.
Access data: Utah DNR — Boat Ramps. Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| Jun 24 | Splake trout | 3,527 | ~2.7" |
| Jun 17 | Tiger Trout | 499 | ~9.8" |
| May 19 | Rainbow trout | 427 | ~11.7" |
| May 18 | Rainbow trout | 1,395 | ~11.7" |
| May 11 | Tiger Trout | 2,744 | ~9.3" |
| Apr 27 | Cutthroat trout | 7,540 | ~10" |
| Apr 27 | Cutthroat trout | 2,900 | ~10" |
| Apr 27 | Cutthroat trout | 3,205 | ~10" |
Source: Utah DWR fish-stocking report, retrieved 2026-08-18.
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 Lost Creek Reservoir specifically, so confirm the current rules before you fish.
Check the official Utah fishing regulations →
Lost Creek Reservoir is about 128 ft (39 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 cutthroat trout, rainbow trout, splake, kokanee, white bass & hybrids on Lost Creek Reservoir.
Creek inflow is the top-rated area: an inflow / creek mouth in about 8 ft of water that rates prime for cutthroat trout in spring. Open the map above to see every rated spot for each species and season.
For cutthroat 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.
Yes — per Utah DWR fish-stocking report records, Lost Creek Reservoir was most recently stocked Jun 24 with 3,527 splake trout. The full stocking history is listed above.
Fishing on Lost Creek 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.
Causey Reservoir 12 mi · Echo Reservoir 18 mi · Weber River 20 mi · Birch Creek Reservoir 21 mi · Pineview Reservoir 23 mi · East Canyon Reservoir 23 mi · Porcupine Reservoir 29 mi · Rockport Reservoir 29 mi · Little Dell Reservoir 34 mi · Smith and Morehouse Reservoir 34 mi · Mantua Reservoir 36 mi · Hyrum Reservoir 38 mi
See how Lost Creek Reservoir stacks up: best rainbow trout lakes in Utah · best white bass & hybrids lakes in Utah · best kokanee lakes in Utah · best cutthroat trout 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.