Yearns Reservoir (Manti Mountains) fishing
Yearns Reservoir (Manti Mountains) was last stocked on Oct. 15, 2026 with 1,400 tiger trout (11.3 in. average), according to the Utah DWR fish stocking report. It is a 3-acre reservoir in Sanpete County, Utah. From 2021 to 2026, DWR stocked 36,441 fish here, the 7th most of 71 stocked waters in Sanpete County.
Recent stockings at Yearns Reservoir (Manti Mountains)
- Oct. 15, 20261,400 tiger trout, 11.3 in. average
- Aug. 3, 2026615 rainbow trout, 10.7 in. average
- June 1, 2026903 rainbow trout and 359 tiger trout, 10.0 in. average
- May 20, 20261,003 rainbow trout, 9.0 in. average
- May 12, 20261,000 rainbow trout and 504 tiger trout, 9.8 in. average
- April 21, 2026999 tiger trout and 999 rainbow trout, 9.2 in. average
Newest first, from the Utah DWR stocking report. Full stocking history.
Yearns Reservoir (Manti Mountains) facts
- Last stocked
- Oct. 15, 2026 (26 days ago): 1,400 tiger trout
- Stockings in 2026
- 9 (7,782 fish): 4,520 rainbow trout and 3,262 tiger trout
- County
- Sanpete County
- Size
- 3 acres
- Stocked since 2021
- rainbow trout and tiger trout
- Likely catch (DWR)
- rainbow trout
- Average size stocked
- 10.4 in. (2021 to 2026)
- County rank
- 7th most fish of 71 stocked waters in Sanpete County since 2021
- Name in DWR report
- YEARNS RES
- Nearest water
- Six Mile Creek, 2.8 mi
- Rules
- Statewide rules (no water-specific entry in the 2026 guidebook)
Yearns Reservoir (Manti Mountains) stocking report, last 12 months
| Oct. 15, 2026 | Tiger trout | 1,400 | 11.3 in. |
| Aug. 3, 2026 | Rainbow trout | 615 | 10.7 in. |
| June 1, 2026 | Tiger trout | 359 | 10.1 in. |
| June 1, 2026 | Rainbow trout | 903 | 9.9 in. |
| May 20, 2026 | Rainbow trout | 1,003 | 9.0 in. |
| May 12, 2026 | Tiger trout | 504 | 9.3 in. |
| May 12, 2026 | Rainbow trout | 1,000 | 10.0 in. |
| April 21, 2026 | Tiger trout | 999 | 8.6 in. |
| April 21, 2026 | Rainbow trout | 999 | 9.8 in. |
Source: Utah DWR fish stocking report. Stocking data fetched Nov. 10, 2026; newest record dated Nov. 19, 2026. DWR posts stockings after they happen and does not publish schedules.
Yearns Reservoir (Manti Mountains) stocking profile
- First record in the DWR report: May 23, 2002. Since then DWR has logged 191 stockings here in 25 different years, 172,985 fish in all.
- Species stocked 2021 to 2026, by share of fish: rainbow trout 77% (28,138 fish) and tiger trout 23% (8,303 fish).
- Busiest months in the record: June (37% of records) and May (30% of records).
- Stocked fish averaged 10.4 in. from 2021 to 2026 (per-record averages ranged from 6.8 to 12.3 in.). The yearly average was 10.5 in. in 2021 and 11.3 in. in 2025.
- Fish stocked 2021 to 2026: 36,441, the 7th most of 71 stocked waters in Sanpete County and 146th of 1,076 statewide.
- Nearest other water with a page: Six Mile Creek, 2.8 mi away.
Computed from Utah DWR stocking records (fish counts and average lengths as DWR reports them). Past stocking is history, not a schedule.
When is Yearns Reservoir (Manti Mountains) stocked?
Based on DWR stocking records, 2021 to 2025. Stocked in 5 of those 5 years.
2025 stocking: 8 records, first on April 16, last on Sept. 11.
DWR does not publish stocking schedules. This is past stocking, not a promise. How we read patterns.
Yearns Reservoir (Manti Mountains) stocking history by year
| Year | Records | Fish | Avg. length | Species |
|---|---|---|---|---|
| 2026 | 9 | 7,782 | 9.9 in. | Tiger trout, Rainbow trout |
| 2025 | 8 | 6,158 | 11.3 in. | Tiger trout, Rainbow trout |
| 2024 | 8 | 7,005 | 10.2 in. | Tiger trout, Rainbow trout |
| 2023 | 8 | 7,502 | 10.4 in. | Tiger trout, Rainbow trout |
| 2022 | 4 | 3,778 | 10.6 in. | Tiger trout, Rainbow trout |
| 2021 | 4 | 4,216 | 10.5 in. | Rainbow trout |
| 2020 | 6 | 6,521 | 9.8 in. | Rainbow trout |
| 2019 | 7 | 5,696 | 10.2 in. | Rainbow trout |
| 2018 | 9 | 7,026 | 10.1 in. | Rainbow trout |
| 2017 | 6 | 7,014 | 9.4 in. | Rainbow trout |
| 2016 | 9 | 7,048 | 10.3 in. | Rainbow trout |
| 2015 | 11 | 7,031 | 11.1 in. | Rainbow trout |
| 2014 | 12 | 7,101 | 9.9 in. | Rainbow trout |
| 2013 | 11 | 7,156 | 11.0 in. | Rainbow trout |
| 2012 | 13 | 7,874 | 9.9 in. | Rainbow trout |
| 2011 | 5 | 7,049 | 9.8 in. | Rainbow trout |
| 2010 | 7 | 7,999 | 9.9 in. | Rainbow trout |
| 2009 | 6 | 7,999 | 11.2 in. | Rainbow trout |
| 2008 | 6 | 8,001 | 9.7 in. | Rainbow trout |
| 2007 | 7 | 8,006 | 9.9 in. | Rainbow trout |
| 2006 | 7 | 5,499 | 10.3 in. | Rainbow trout |
| 2005 | 5 | 5,505 | 10.4 in. | Rainbow trout |
| 2004 | 5 | 7,004 | 10.0 in. | Rainbow trout |
| 2003 | 5 | 7,007 | 10.1 in. | Rainbow trout |
| 2002 | 13 | 10,008 | 9.3 in. | Rainbow trout |
All stocking records 2021 to Nov. 10, 2025 (32)
| Sept. 11, 2025 | Tiger trout | 375 | 11.9 in. |
| Aug. 20, 2025 | Rainbow trout | 1,020 | 11.1 in. |
| June 12, 2025 | Tiger trout | 390 | 10.2 in. |
| June 12, 2025 | Rainbow trout | 989 | 10.0 in. |
| May 21, 2025 | Tiger trout | 504 | 10.9 in. |
| May 21, 2025 | Rainbow trout | 892 | 12.3 in. |
| April 16, 2025 | Rainbow trout | 994 | 11.9 in. |
| April 16, 2025 | Rainbow trout | 994 | 11.9 in. |
| July 10, 2024 | Tiger trout | 500 | 10.9 in. |
| July 10, 2024 | Rainbow trout | 700 | 10.8 in. |
| July 10, 2024 | Rainbow trout | 300 | 9.4 in. |
| June 3, 2024 | Rainbow trout | 998 | 10.6 in. |
| May 20, 2024 | Rainbow trout | 1,501 | 10.4 in. |
| May 20, 2024 | Tiger trout | 500 | 9.7 in. |
| May 8, 2024 | Tiger trout | 504 | 10.1 in. |
| May 8, 2024 | Rainbow trout | 2,002 | 9.9 in. |
| July 13, 2023 | Tiger trout | 998 | 11.1 in. |
| July 10, 2023 | Rainbow trout | 1,005 | 9.4 in. |
| June 22, 2023 | Rainbow trout | 999 | 9.2 in. |
| May 30, 2023 | Tiger trout | 500 | 10.3 in. |
| May 30, 2023 | Rainbow trout | 1,500 | 10.8 in. |
| May 18, 2023 | Rainbow trout | 1,000 | 10.8 in. |
| May 18, 2023 | Tiger trout | 500 | 10.2 in. |
| May 18, 2023 | Rainbow trout | 1,000 | 10.8 in. |
| Oct. 17, 2022 | Tiger trout | 270 | 6.8 in. |
| June 10, 2022 | Rainbow trout | 999 | 11.2 in. |
| June 1, 2022 | Rainbow trout | 1,007 | 11.0 in. |
| May 11, 2022 | Rainbow trout | 1,502 | 10.6 in. |
| June 30, 2021 | Rainbow trout | 750 | 10.8 in. |
| June 2, 2021 | Rainbow trout | 750 | 10.8 in. |
| May 5, 2021 | Rainbow trout | 1,221 | 10.4 in. |
| April 29, 2021 | Rainbow trout | 1,495 | 10.3 in. |
Fishing rules
No water-specific entry for Yearns Reservoir (Manti Mountains) in the 2026 guidebook: statewide limits apply unless a group entry (such as a drainage) covers it.
From the 2026 Utah Fishing Guidebook, in our own words. Rules can change mid-year: check wildlife.utah.gov/guidebooks before fishing.
Access and facilities
- Other activities
- Hiking, OHV or 4WD trails, Wildlife watching
- Facilities
- Drinking water, Fire rings, Picnic tables, Restrooms
- Camping
- Primitive tent camping, RV camping
Facility list from DWR Fish Utah. Check with the land manager before you go; facilities close seasonally.
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Yearns Reservoir (Manti Mountains) questions
When is Yearns Reservoir (Manti Mountains) stocked?
DWR does not publish stocking schedules. Past records show Yearns Reservoir (Manti Mountains) was stocked in mid May (3 of the last 5 years), early June (3 of the last 5 years) and mid to late June (3 of the last 5 years). The most recent stocking in the DWR report is dated Oct. 15, 2026.
What fish are in Yearns Reservoir (Manti Mountains)?
DWR lists rainbow trout as likely catches. Since 2021 DWR has stocked rainbow trout and tiger trout.
Stocking: Utah DWR fish stocking report, fetched Nov. 10, 2026. Size, program, species and facilities: DWR Fish Utah. Location: Utah DWR, USGS NHD. Rules: 2026 Utah Fishing Guidebook. Page built Nov. 10, 2026. Found an error? Tell us. Verify rules with DWR before fishing.