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151-acre reservoir in Iron County, Utah. The lake tops out around 14 ft. Depth here is modeled from the true shoreline and max depth rather than surveyed; use it to plan, not to navigate. The season-by-season read for each species follows, from the map's own numbers.
The drawn outline gives you 1.7 miles of bank to pick apart. The basin is a simple one (shoreline index 1.3) — close to a bowl, so the structure on the chart matters more than the bank. There is no deep basin to speak of — the entire surface is under ~15 ft, prime weed water end to end. End to end it runs roughly 0.7 mi, about 0.3 mi across. It sits in Iron County. If the bite dies, Baker Reservoir is 20 mi to the south.
Early season rainbow trout use the shallows, holding in 4 to 14 ft. Even in summer they hold at 4 to 14 ft; winter keeps them in 3 to 14 ft. Put Shoreline break first on the milk run — a drop-off near 6 ft that grades prime for winter. In summer the feeding windows fall in early morning and the evening. Tie on a dodger + spoon (deep troll) or a flutter spoon and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Inline spinner (silver), Small spoon |
| Summer | 4 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 4 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 3 to 14 ft | dawn | Shoreline break (6 ft) | Jigging spoon, Tube jig (white) |
Come spring, look for smallmouth bass tight to the bank in 3 to 12 ft. They move out to 4 to 14 ft in summer and finish the year down in 4 to 14 ft. If you only fish one area, make it Shoreline break: a drop-off around 6 ft that scores prime in winter. Best bite is early morning and the evening. A drop shot (goby/minnow) or a ned rig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | open water | Ned rig, Tube jig |
| Summer | 4 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 4 to 14 ft | midday & dawn | Shoreline break (6 ft) | Jerkbait, Blade bait |
| Winter | 4 to 14 ft | midday | Shoreline break (6 ft) | Blade bait, Hair jig |
Come spring, look for crappie tight to the bank in 2 to 8 ft. They move out to 4 to 14 ft in summer and finish the year down in 4 to 14 ft. If you only fish one area, make it Deep basin: a deep basin around 12 ft that scores prime in winter. Best bite is early morning and the evening. A jig trolled/spider-rigged or a small crankbait (trolled) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (3 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 4 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 4 to 14 ft | dawn | Shoreline break (6 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 4 to 14 ft | midday | Deep basin (12 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
When the water first warms, channel catfish slide up into 3 to 12 ft. Summer is a 4 to 14 ft game here, winter a 4 to 14 ft one. Start at Deep basin. It's a deep basin holding about 12 ft of water and rates prime come winter. The feeding windows run after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Shallow bay flat (3 ft) | |
| Summer | 4 to 14 ft | night & dusk | Deep basin (12 ft) | |
| Fall | 4 to 14 ft | dusk | Deep basin (12 ft) | |
| Winter | 4 to 14 ft | midday | Deep basin (12 ft) |
Come spring, look for white bass & hybrids tight to the bank in 3 to 14 ft. Through summer count on 4 to 14 ft; the winter hold is 4 to 14 ft. If you only fish one area, make it Deep basin: a deep basin around 12 ft that scores prime in winter. Best bite is early morning and the evening. A jigging spoon or a topwater (when schooling) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 14 ft | midday & dawn | open water | Rooster tail / inline spinner, Curly-tail jig (white/chartreuse) |
| Summer | 4 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Jigging spoon, Topwater (when schooling) |
| Fall | 4 to 14 ft | midday & dawn | Shoreline break (6 ft) | Small blade bait, Jigging spoon |
| Winter | 4 to 14 ft | midday | Deep basin (12 ft) | Jigging spoon, Blade bait (vertical) |
4 pieces of structure are mapped here — Deep basin, around 12 ft, is the deepest of them.
Access data: OpenStreetMap contributors (ODbL) — community-mapped launches. Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| Oct 2, 2025 | Rainbow trout | 4,060 | ~7.5" |
| Sep 30, 2025 | Rainbow trout | 8,120 | ~7.5" |
| Sep 24, 2025 | Rainbow trout | 8,178 | ~7.5" |
| Sep 16, 2025 | Wiper | 2,999 | ~2.4" |
| Jul 30, 2025 | Wiper | 2,000 | ~2.6" |
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 Newcastle Reservoir specifically, so confirm the current rules before you fish.
Check the official Utah fishing regulations →
Newcastle Reservoir is about 14 ft (4 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, smallmouth bass, crappie, channel catfish, white bass & hybrids on Newcastle Reservoir.
Shoreline break is the top-rated area: a drop-off in about 6 ft of water that rates prime for smallmouth bass in winter. 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.
Yes — per Utah DWR fish-stocking report records, Newcastle Reservoir was most recently stocked Oct 2, 2025 with 4,060 rainbow trout. The full stocking history is listed above.
Fishing on Newcastle 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.
Baker Reservoir 20 mi · Enterprise Reservoirs 21 mi · Kolob Reservoir 30 mi · Gunlock Reservoir 30 mi · Quail Creek Reservoir 33 mi · Sand Hollow Reservoir 38 mi · Navajo Lake 41 mi · Yankee Meadow Reservoir 42 mi · Echo Canyon Reservoir 44 mi, NV · Eagle Valley Reservoir 45 mi, NV · Panguitch Lake 48 mi · Paragonah (Red Creek) Reservoir 48 mi
See how Newcastle Reservoir stacks up: best smallmouth bass lakes in Utah · best crappie lakes in Utah · best channel catfish lakes in Utah · best rainbow 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.