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346-acre reservoir in Uintah County, Utah. The lake tops out around 23 ft. Depth here is modeled from the true shoreline and max depth rather than surveyed; use it to plan, not to navigate. Every species below gets its seasonal read from the same numbers driving the chart.
The outline encloses 317 acres, worked by 5.8 miles of shoreline. That shoreline is heavily fingered (development index 2.3) — bays, points and pockets everywhere, which multiplies the fishable edge. 88% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. Figure 1.8 mi of water from one end to the other, 0.9 mi at the beam. It sits in Uintah County. If the bite dies, Calder Reservoir is 5 mi to the southeast.
Spring rainbow trout on Matt Warner Reservoir hold shallow, usually 5 to 20 ft. By summer they slide out to 6 to 23 ft, and by winter most fish are in 5 to 23 ft. The chart's best answer is Break off the point — drop-off, 10 ft, prime for winter. Prime time lands in 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 | 5 to 20 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 6 to 23 ft | dawn & dusk | Break off the point (10 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 7 to 23 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 5 to 23 ft | dawn | Break off the point (10 ft) | Jigging spoon, Tube jig (white) |
In spring, brown trout run shallow here, mostly 3 to 23 ft. Summer keeps them at 7 to 23 ft, and they winter in 3 to 23 ft. Summer brown trout concentrate at Break off the point, a prime-rated drop-off around 10 ft. Fish it in after dark and early morning and you'll meet the bite. 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 | 3 to 23 ft | dawn & dusk | Main-lake point (8 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 7 to 23 ft | night & dawn | Break off the point (10 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 4 to 23 ft | dusk & dawn | Main-lake point (8 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 3 to 23 ft | dawn | Break off the point (10 ft) | Jigging spoon, Small stickbait (slow) |
The chart marks 6 structure features on Matt Warner Reservoir; the deepest is Deep basin at about 20 ft.
Access data: Utah DNR — Boat Ramps. Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| May 27 | Brown Trout | 3,929 | ~3.1" |
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 Matt Warner Reservoir specifically, so confirm the current rules before you fish.
Check the official Utah fishing regulations →
Matt Warner Reservoir is about 23 ft (7 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 Matt Warner Reservoir.
Break off the point is the top-rated area: a drop-off in about 10 ft of water that rates prime for brown trout in summer. Open the map above to see every rated spot for each 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.
Yes — per Utah DWR fish-stocking report records, Matt Warner Reservoir was most recently stocked May 27 with 3,929 brown trout. The full stocking history is listed above.
Fishing on Matt Warner 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.
Calder Reservoir 5 mi · Crouse Reservoir 7 mi · Green River (Flaming Gorge) 8 mi · East Park Reservoir 13 mi · Red Fleet Reservoir 15 mi · Steinaker Reservoir 21 mi · Browne Lake 28 mi · Sheep Creek Lake 30 mi · Flaming Gorge Reservoir 31 mi, UT/WY · Long Park Reservoir, North Slope 31 mi · Spirit Lake 37 mi · Brough Reservoir 41 mi
See how Matt Warner Reservoir stacks up: best rainbow trout lakes in Utah · best brown trout lakes in Utah
More water nearby: Uintah County fishing maps (8 charts). 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.