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166-acre reservoir in Sevier County, Utah. The lake tops out around 36 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. Below is the species-by-species picture, pulled from the same data the map uses.
Traced from the shoreline, Forsyth Reservoir runs 168 acres with 3.5 miles of edge. The shoreline is moderately structured (index 2) — enough points and pockets to pattern. Roughly 75% of the water is 15 ft or less as modeled, the band where the food chain lives. Call it 1.2 mi long by 0.6 mi wide at the broadest reach. The water lies in Sevier County. The nearest mapped water is Mill Meadow Reservoir, 2 mi to the southwest.
When the water first warms, yellow perch slide up into 3 to 12 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 15 to 35 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 4 ft that scores prime in spring. In summer the feeding windows fall in early morning. Keep a drop-shot micro plastics or a small spoon tipped with worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (4 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (16 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Deep basin (31 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Deep basin (31 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring puts splake in skinny water — 5 to 25 ft is the zone. As the season builds they drop to 11 to 36 ft, wintering in 8 to 36 ft. Summer splake concentrate at Break off the point, a prime-rated drop-off around 16 ft. Warm-month bites cluster around early morning and the evening. A trolled spoon at the thermocline or a white tube jig (deep) covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | Main-lake point (9 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 11 to 36 ft | dawn & dusk | Break off the point (16 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (9 ft) | Casting spoon, Jerkbait |
| Winter | 8 to 36 ft | dawn | Break off the point (16 ft) | Jigging spoon tipped with minnow head, Small white tube |
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 9 to 36 ft one. Start at Break off the point. It's a drop-off holding about 16 ft of water and rates prime come summer. 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 | Main-lake point (9 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Break off the point (16 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (9 ft) | Casting spoon, Inline spinner |
| Winter | 9 to 36 ft | dawn | Break off the point (16 ft) | Small jigging spoon, Marabou jig |
Forsyth Reservoir carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 31 ft down.
| Date | Species | Count | Size |
|---|---|---|---|
| Oct 28, 2025 | Cutthroat trout | 5,606 | ~3.8" |
| Oct 28, 2025 | Tiger Trout | 1,098 | ~10.4" |
| Oct 27, 2025 | Tiger Trout | 805 | ~4.6" |
| Jul 30, 2025 | Splake trout | 4,100 | ~3.4" |
| Jul 30, 2025 | Tiger Trout | 8,032 | ~3.4" |
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 Forsyth Reservoir specifically, so confirm the current rules before you fish.
Check the official Utah fishing regulations →
Forsyth Reservoir is about 36 ft (11 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 yellow perch, splake, cutthroat trout on Forsyth Reservoir.
Shallow bay flat is the top-rated area: a weed flat in about 4 ft of water that rates prime for yellow perch in spring. Every other rated spot, per species and season, is on the map above.
For yellow perch, the summer bite is best in early morning. 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, Forsyth Reservoir was most recently stocked Oct 28, 2025 with 5,606 cutthroat trout. The full stocking history is listed above.
Fishing on Forsyth 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.
Mill Meadow Reservoir 2 mi · Johnson Reservoir 8 mi · Fish Lake 10 mi · Koosharem Reservoir 18 mi · Lower Bowns Reservoir 32 mi · Otter Creek Reservoir 33 mi · Piute Reservoir 40 mi · Ferron Reservoir 43 mi · Millsite Reservoir 43 mi · Duck Fork Reservoir 45 mi · Nine Mile Reservoir 46 mi · Palisade Reservoir 48 mi
See how Forsyth Reservoir stacks up: best yellow perch lakes in Utah · best cutthroat trout lakes in Utah · best splake 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.