Moosehorn Lake (Z-4) fishing
Moosehorn Lake (Z-4) was last stocked on Aug. 17, 2026 with 220 rainbow trout (10.8 in. average), according to the Utah DWR fish stocking report. It is a lake in Duchesne County, Utah. From 2021 to 2026, DWR stocked 23,101 fish here, the 10th most of 258 stocked waters in Duchesne County.
Moosehorn Lake (Z-4) stocking report, last 12 months
| Aug. 17, 2026 | Rainbow trout | 220 | 10.8 in. |
| Aug. 12, 2026 | Rainbow trout | 300 | 10.8 in. |
| July 29, 2026 | Rainbow trout | 301 | 11.0 in. |
| July 21, 2026 | Tiger trout | 206 | 10.6 in. |
| July 20, 2026 | Rainbow trout | 300 | 10.8 in. |
| July 16, 2026 | Rainbow trout | 300 | 10.8 in. |
| July 14, 2026 | Tiger trout | 144 | 11.7 in. |
| July 9, 2026 | Tiger trout | 364 | 10.1 in. |
| July 8, 2026 | Rainbow trout | 301 | 11.0 in. |
| June 29, 2026 | Rainbow trout | 300 | 10.5 in. |
| June 24, 2026 | Rainbow trout | 602 | 9.8 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 Moosehorn Lake (Z-4) stocked?
Based on DWR stocking records, 2021 to 2025. Stocked in 5 of those 5 years.
2025 stocking: 13 records, first on June 17, last on Aug. 20.
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.
Moosehorn Lake (Z-4) stocking profile
- First record in the DWR report: June 12, 2002. Since then DWR has logged 347 stockings here in 25 different years, 130,618 fish in all.
- Species stocked 2021 to 2026, by share of fish: rainbow trout 69% (15,918 fish) and tiger trout 31% (7,183 fish).
- Busiest months in the record: July (45% of records) and August (35% of records).
- Stocked fish averaged 10.4 in. from 2021 to 2026 (per-record averages ranged from 9.2 to 12.9 in.). The yearly average was 9.7 in. in 2021 and 11.2 in. in 2025.
- Fish stocked 2021 to 2026: 23,101, the 10th most of 258 stocked waters in Duchesne County and 211th of 1,068 statewide.
- Nearest other water with a page: Emerald Lake (D-20), 0.7 mi away.
Computed from Utah DWR stocking records (fish counts and average lengths as DWR reports them). Past stocking is history, not a schedule.
Moosehorn Lake (Z-4) stocking history by year
| Year | Records | Fish | Avg. length | Species |
|---|---|---|---|---|
| 2026 | 11 | 3,338 | 10.6 in. | Rainbow trout, Tiger trout |
| 2025 | 13 | 3,656 | 11.2 in. | Tiger trout, Rainbow trout |
| 2024 | 12 | 3,881 | 10.3 in. | Rainbow trout, Tiger trout |
| 2023 | 12 | 4,214 | 10.7 in. | Rainbow trout, Tiger trout |
| 2022 | 13 | 4,151 | 9.7 in. | Rainbow trout, Tiger trout |
| 2021 | 12 | 3,861 | 9.7 in. | Rainbow trout, Tiger trout |
| 2020 | 12 | 4,566 | 9.2 in. | Tiger trout, Rainbow trout |
| 2019 | 13 | 5,344 | 9.9 in. | Rainbow trout, Tiger trout |
| 2018 | 13 | 4,999 | 9.9 in. | Rainbow trout, Tiger trout |
| 2017 | 13 | 5,126 | 10.5 in. | Rainbow trout, Tiger trout |
| 2016 | 18 | 5,206 | 10.4 in. | Tiger trout, Rainbow trout |
| 2015 | 19 | 6,557 | 8.6 in. | Arctic grayling, Tiger trout, Rainbow trout |
| 2014 | 14 | 5,866 | 10.5 in. | Rainbow trout, Tiger trout |
| 2013 | 14 | 4,467 | 9.9 in. | Tiger trout, Rainbow trout |
| 2012 | 20 | 4,998 | 10.5 in. | Tiger trout, Rainbow trout |
| 2011 | 9 | 4,703 | 9.5 in. | Rainbow trout |
| 2010 | 15 | 6,255 | 10.2 in. | Tiger trout, Rainbow trout |
| 2009 | 16 | 6,267 | 10.3 in. | Rainbow trout |
| 2008 | 14 | 6,308 | 10.5 in. | Rainbow trout |
| 2007 | 14 | 6,328 | 10.9 in. | Rainbow trout |
| 2006 | 12 | 5,105 | 10.9 in. | Rainbow trout |
| 2005 | 13 | 5,005 | 10.7 in. | Rainbow trout |
| 2004 | 15 | 8,035 | 8.4 in. | Rainbow trout |
| 2003 | 15 | 6,504 | 10.1 in. | Rainbow trout |
| 2002 | 15 | 5,878 | 9.7 in. | Rainbow trout |
All stocking records 2021 to Sept. 24, 2025 (62)
| Aug. 20, 2025 | Tiger trout | 361 | 11.5 in. |
| Aug. 18, 2025 | Rainbow trout | 253 | 12.9 in. |
| Aug. 5, 2025 | Rainbow trout | 126 | 12.9 in. |
| Aug. 5, 2025 | Rainbow trout | 126 | 12.9 in. |
| July 29, 2025 | Rainbow trout | 319 | 12.4 in. |
| July 21, 2025 | Rainbow trout | 350 | 10.8 in. |
| July 14, 2025 | Rainbow trout | 352 | 10.4 in. |
| July 9, 2025 | Rainbow trout | 350 | 10.8 in. |
| July 7, 2025 | Rainbow trout | 350 | 10.8 in. |
| June 25, 2025 | Tiger trout | 185 | 11.1 in. |
| June 25, 2025 | Tiger trout | 187 | 11.1 in. |
| June 24, 2025 | Rainbow trout | 348 | 10.1 in. |
| June 17, 2025 | Rainbow trout | 349 | 10.6 in. |
| Aug. 14, 2024 | Rainbow trout | 207 | 10.3 in. |
| Aug. 12, 2024 | Tiger trout | 341 | 10.6 in. |
| Aug. 5, 2024 | Rainbow trout | 311 | 10.3 in. |
| July 31, 2024 | Tiger trout | 360 | 10.6 in. |
| July 29, 2024 | Rainbow trout | 322 | 10.3 in. |
| July 23, 2024 | Rainbow trout | 299 | 10.3 in. |
| July 15, 2024 | Tiger trout | 306 | 10.2 in. |
| July 15, 2024 | Rainbow trout | 300 | 10.0 in. |
| July 8, 2024 | Rainbow trout | 325 | 10.0 in. |
| July 2, 2024 | Rainbow trout | 300 | 10.0 in. |
| June 26, 2024 | Tiger trout | 450 | 10.0 in. |
| June 25, 2024 | Rainbow trout | 360 | 11.2 in. |
| Aug. 28, 2023 | Rainbow trout | 301 | 12.1 in. |
| Aug. 21, 2023 | Rainbow trout | 301 | 12.1 in. |
| Aug. 14, 2023 | Rainbow trout | 300 | 11.7 in. |
| Aug. 14, 2023 | Tiger trout | 342 | 9.4 in. |
| Aug. 2, 2023 | Rainbow trout | 301 | 12.1 in. |
| Aug. 1, 2023 | Rainbow trout | 400 | 9.5 in. |
| July 25, 2023 | Rainbow trout | 305 | 12.0 in. |
| July 18, 2023 | Rainbow trout | 301 | 11.3 in. |
| July 18, 2023 | Tiger trout | 304 | 9.2 in. |
| July 10, 2023 | Rainbow trout | 301 | 11.2 in. |
| July 5, 2023 | Tiger trout | 752 | 9.2 in. |
| July 3, 2023 | Rainbow trout | 306 | 11.3 in. |
| Aug. 15, 2022 | Rainbow trout | 300 | 10.0 in. |
| Aug. 8, 2022 | Rainbow trout | 300 | 10.0 in. |
| Aug. 2, 2022 | Tiger trout | 240 | 9.4 in. |
| Aug. 1, 2022 | Rainbow trout | 300 | 10.0 in. |
| July 26, 2022 | Rainbow trout | 300 | 10.0 in. |
| July 19, 2022 | Rainbow trout | 301 | 10.1 in. |
| July 18, 2022 | Tiger trout | 402 | 9.4 in. |
| July 11, 2022 | Rainbow trout | 301 | 10.1 in. |
| July 6, 2022 | Tiger trout | 397 | 9.5 in. |
| July 5, 2022 | Rainbow trout | 306 | 10.1 in. |
| June 27, 2022 | Rainbow trout | 301 | 9.2 in. |
| June 27, 2022 | Tiger trout | 403 | 9.4 in. |
| June 14, 2022 | Rainbow trout | 300 | 9.4 in. |
| Aug. 17, 2021 | Rainbow trout | 301 | 12.1 in. |
| Aug. 16, 2021 | Tiger trout | 240 | 9.2 in. |
| Aug. 2, 2021 | Rainbow trout | 300 | 10.1 in. |
| July 27, 2021 | Rainbow trout | 300 | 10.1 in. |
| July 20, 2021 | Tiger trout | 392 | 9.6 in. |
| July 19, 2021 | Rainbow trout | 312 | 9.3 in. |
| July 12, 2021 | Rainbow trout | 306 | 9.3 in. |
| June 28, 2021 | Rainbow trout | 303 | 9.3 in. |
| June 23, 2021 | Tiger trout | 402 | 9.4 in. |
| June 21, 2021 | Rainbow trout | 300 | 9.3 in. |
| June 9, 2021 | Tiger trout | 405 | 9.4 in. |
| June 9, 2021 | Rainbow trout | 300 | 9.3 in. |
Fishing rules
The 2026 Utah Fishing Guidebook lists no water-specific rules for Moosehorn Lake (Z-4) under that name, so statewide rules apply unless DWR posts a change. Some waters are covered by a group entry (for example a drainage or its tributaries).
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.
Email me when Moosehorn Lake (Z-4) is stocked
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"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.
Moosehorn Lake (Z-4) questions
When is Moosehorn Lake (Z-4) stocked?
DWR does not publish stocking schedules. Past records show Moosehorn Lake (Z-4) was stocked in early to mid June (3 of the last 5 years), late June to early July (5 of the last 5 years), mid to late July (5 of the last 5 years) and early to mid August (5 of the last 5 years). The most recent stocking in the DWR report is dated Aug. 17, 2026.
What fish are in Moosehorn Lake (Z-4)?
Since 2021 DWR has stocked rainbow trout and tiger trout.
What are the fishing limits at Moosehorn Lake (Z-4)?
The 2026 guidebook lists no water-specific rules under this name, so statewide limits apply unless DWR posts a change. See our statewide limits page and check the guidebook.
Stocking: Utah DWR fish stocking report, fetched Sept. 25, 2026. 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.