Newcastle Reservoir fishing
Newcastle Reservoir was last stocked on Sept. 21, 2026 with 5,000 rainbow trout (9.6 in. average), according to the Utah DWR fish stocking report. It is a reservoir in Iron County, Utah. From 2021 to 2026, DWR stocked 139,731 fish here, the most of 23 stocked waters in Iron County.
Latest fishing report
Fall outlook: water is low but boats can still launch. Smallmouth have fished good to excellent and should stay active, and trout should improve as it cools, with rainbows stocked in fall. Wipers bite best at dawn, dusk and night on shiner or crayfish imitations. Catfish to 5 pounds reported; crappie are establishing.
Illegally stocked largemouth bass and bluegill are confirmed here; moving fish into Utah waters is against the law.
Our summary of the Utah DWR fishing report dated Aug. 18, 2026, in our own words. Read the original on DWR Fish Utah.
Newcastle Reservoir stocking report, last 12 months
| Sept. 21, 2026 | Rainbow trout | 2,500 | 9.6 in. |
| Sept. 21, 2026 | Rainbow trout | 2,500 | 9.6 in. |
| Oct. 2, 2025 | Rainbow trout | 4,060 | 7.5 in. |
| Sept. 30, 2025 | Rainbow trout | 8,120 | 7.5 in. |
| Sept. 24, 2025 | Rainbow trout | 8,178 | 7.5 in. |
Source: Utah DWR fish stocking report. Stocking data fetched Sept. 25, 2026; newest record dated Sept. 23, 2026. DWR posts stockings after they happen and does not publish schedules.
When is Newcastle Reservoir stocked?
Based on DWR stocking records, 2021 to 2025. Stocked in 5 of those 5 years.
2025 stocking: 6 records, first on July 2, last on Oct. 2.
DWR does not publish stocking schedules. Patterns are based on past stocking records and are not a promise of future stocking. Weather, water conditions and hatchery supply change plans. How we read patterns.
Newcastle Reservoir stocking profile
- First record in the DWR report: March 12, 2002. Since then DWR has logged 142 stockings here in 25 different years, 908,978 fish in all.
- Species stocked 2021 to 2026, by share of fish: rainbow trout 78% (109,514 fish), wiper 11% (15,600 fish), channel catfish 7% (9,338 fish), brown trout 3% (4,238 fish) and black crappie 1% (1,041 fish).
- Busiest months in the record: October (25% of records) and September (25% of records).
- Stocked fish averaged 6.5 in. from 2021 to 2026 (per-record averages ranged from 1.9 to 9.7 in.). The yearly average was 5.8 in. in 2021 and 6.4 in. in 2025.
- Fish stocked 2021 to 2026: 139,731, the most of 23 stocked waters in Iron County and 43rd of 1,068 statewide.
- Nearest other water with a page: Willow Spring Pond, 11.7 mi away.
Computed from Utah DWR stocking records (fish counts and average lengths as DWR reports them). Past stocking is history, not a schedule.
Newcastle Reservoir stocking history by year
| Year | Records | Fish | Avg. length | Species |
|---|---|---|---|---|
| 2026 | 2 | 5,000 | 9.6 in. | Rainbow trout |
| 2025 | 6 | 29,595 | 6.4 in. | Rainbow trout, Wiper, Brown trout |
| 2024 | 3 | 23,203 | 6.6 in. | Rainbow trout, Wiper, Black crappie |
| 2023 | 3 | 22,022 | 6.4 in. | Rainbow trout, Wiper |
| 2022 | 9 | 30,312 | 6.7 in. | Rainbow trout, Channel catfish, Wiper |
| 2021 | 6 | 29,599 | 5.8 in. | Rainbow trout, Channel catfish, Wiper |
| 2020 | 5 | 25,901 | 7.3 in. | Rainbow trout, Wiper |
| 2019 | 2 | 25,606 | 7.2 in. | Rainbow trout |
| 2018 | 2 | 21,769 | 7.3 in. | Rainbow trout |
| 2017 | 3 | 22,007 | 6.5 in. | Rainbow trout, Wiper |
| 2016 | 3 | 24,429 | 6.6 in. | Rainbow trout, Wiper |
| 2015 | 3 | 24,028 | 6.9 in. | Rainbow trout, Wiper |
| 2014 | 5 | 21,725 | 7.8 in. | Rainbow trout, Wiper |
| 2013 | 4 | 181,490 | 1.3 in. | Rainbow trout, Wiper |
| 2012 | 7 | 21,142 | 8.0 in. | Rainbow trout, Wiper |
| 2011 | 3 | 118,632 | 1.6 in. | Rainbow trout, Wiper |
| 2010 | 5 | 24,296 | 7.1 in. | Rainbow trout, Wiper |
| 2009 | 5 | 22,641 | 7.3 in. | Rainbow trout |
| 2008 | 11 | 39,221 | 6.7 in. | Rainbow trout, Wiper |
| 2007 | 11 | 41,313 | 6.7 in. | Cutthroat trout, Rainbow trout, Wiper |
| 2006 | 5 | 29,029 | 3.2 in. | Cutthroat trout, Wiper, Rainbow trout |
| 2005 | 14 | 34,528 | 6.7 in. | Rainbow trout, Wiper, Cutthroat trout |
| 2004 | 11 | 36,527 | 6.6 in. | Rainbow trout, Tiger trout, Cutthroat trout |
| 2003 | 9 | 33,941 | 6.9 in. | Rainbow trout, Cutthroat trout |
| 2002 | 5 | 21,022 | 6.4 in. | Rainbow trout, Cutthroat trout |
All stocking records 2021 to Sept. 24, 2025 (24)
| Sept. 16, 2025 | Wiper | 2,999 | 2.4 in. |
| July 30, 2025 | Wiper | 2,000 | 2.6 in. |
| July 2, 2025 | Brown trout | 4,238 | 5.5 in. |
| Sept. 25, 2024 | Rainbow trout | 20,002 | 7.0 in. |
| July 17, 2024 | Wiper | 2,160 | 2.0 in. |
| May 13, 2024 | Black crappie | 1,041 | 8.4 in. |
| Sept. 20, 2023 | Rainbow trout | 8,769 | 6.8 in. |
| Sept. 14, 2023 | Rainbow trout | 11,258 | 6.8 in. |
| Aug. 2, 2023 | Wiper | 1,995 | 2.5 in. |
| Oct. 5, 2022 | Rainbow trout | 5,100 | 7.1 in. |
| Oct. 4, 2022 | Rainbow trout | 7,446 | 7.1 in. |
| Oct. 3, 2022 | Rainbow trout | 7,480 | 7.1 in. |
| Sept. 13, 2022 | Channel catfish | 2,337 | 3.1 in. |
| July 27, 2022 | Wiper | 2,000 | 1.9 in. |
| May 11, 2022 | Channel catfish | 2,000 | 5.3 in. |
| Feb. 18, 2022 | Rainbow trout | 2,051 | 9.5 in. |
| Feb. 18, 2022 | Rainbow trout | 949 | 9.7 in. |
| Feb. 18, 2022 | Rainbow trout | 949 | 9.7 in. |
| Oct. 6, 2021 | Rainbow trout | 6,760 | 7.2 in. |
| Oct. 6, 2021 | Rainbow trout | 1,408 | 7.0 in. |
| Oct. 6, 2021 | Rainbow trout | 3,872 | 7.0 in. |
| Oct. 5, 2021 | Rainbow trout | 8,112 | 7.2 in. |
| Sept. 16, 2021 | Channel catfish | 5,001 | 4.0 in. |
| Aug. 12, 2021 | Wiper | 4,446 | 2.2 in. |
Fishing rules
- Wiper limit: 2.
Rules summarized in our own words from the 2026 Utah Fishing Guidebook. DWR can change rules mid-year: check the current guidebook and its updates at wildlife.utah.gov/guidebooks before fishing. See statewide limits.
Access and facilities
- Other activities
- OHV or 4WD trails, Swimming, Wildlife watching
- Facilities
- Restrooms
- Boating
- Boat ramp, Hand launch
- Camping
- Primitive tent camping
Facility list from DWR Fish Utah. Check with the land manager before you go; facilities close seasonally.
Email me when Newcastle Reservoir is stocked
Email me when Newcastle Reservoir shows up in the DWR stocking report. Alerts start once we switch on email; your choices are saved now.
"Was stocked" alerts come from new rows in the DWR stocking report. "Often stocked around now" heads-ups come from past stocking records only. DWR does not publish stocking schedules, so a heads-up is never a promise. We store your email only for these alerts; ask us to delete it at [email protected]. Privacy.
Newcastle Reservoir questions
When is Newcastle Reservoir stocked?
DWR does not publish stocking schedules. Past records show Newcastle Reservoir was stocked in mid to late July (3 of the last 5 years), mid September (4 of the last 5 years) and early October (3 of the last 5 years). The most recent stocking in the DWR report is dated Sept. 21, 2026.
What fish are in Newcastle Reservoir?
DWR lists rainbow trout and smallmouth bass as likely catches and black crappie, channel catfish, green sunfish and wiper as possible. Since 2021 DWR has stocked rainbow trout, wiper, channel catfish, brown trout and black crappie.
Are there special fishing rules at Newcastle Reservoir?
Yes. The 2026 Utah Fishing Guidebook lists rules for this water, summarized on this page. Check the guidebook and DWR updates before fishing.
Stocking: Utah DWR fish stocking report, fetched Sept. 25, 2026. Size, program, species and facilities: DWR Fish Utah. Location: Utah DWR, USGS NHD. Rules: 2026 Utah Fishing Guidebook. Page built Sept. 24, 2026. Found an error? [email protected]. Verify rules with DWR before fishing.