Deep Lake (Manti Mountains) fishing
Deep Lake (Manti Mountains) was last stocked on Sept. 10, 2026 with 2,002 arctic grayling (1.8 in. average), according to the Utah DWR fish stocking report. It is a 4.6-acre lake in Sanpete County, Utah. From 2021 to 2026, DWR stocked 16,663 fish here, the 25th most of 71 stocked waters in Sanpete County.
Recent stockings at Deep Lake (Manti Mountains)
- Sept. 10, 20262,002 arctic grayling, 1.8 in. average
- June 30, 2026476 brook trout, 2.7 in. average
- Aug. 15, 20251,440 rainbow trout and 800 tiger trout, 8.4 in. average
- July 2, 2025300 brook trout, 3.2 in. average
- July 9, 20242,100 rainbow trout, 10.8 in. average
- July 1, 2024727 brook trout, 2.7 in. average
Newest first, from the Utah DWR stocking report. Full stocking history.
Deep Lake (Manti Mountains) facts
- Last stocked
- Sept. 10, 2026 (61 days ago): 2,002 arctic grayling
- Stockings in 2026
- 2 (2,478 fish): 2,002 arctic grayling and 476 brook trout
- County
- Sanpete County
- Size
- 4.6 acres
- Stocked since 2021
- rainbow trout, brook trout, arctic grayling and tiger trout
- Likely catch (DWR)
- brook trout and rainbow trout
- Average size stocked
- 7.8 in. (2021 to 2026)
- County rank
- 25th most fish of 71 stocked waters in Sanpete County since 2021
- Name in DWR report
- DEEP L
- Nearest water
- Upper WPA Pond (Manti Mountains), 0.5 mi
- Rules
- Statewide rules (no water-specific entry in the 2026 guidebook)
Deep Lake (Manti Mountains) stocking report, last 12 months
| Sept. 10, 2026 | Arctic grayling | 2,002 | 1.8 in. |
| June 30, 2026 | Brook trout | 476 | 2.7 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.
Deep Lake (Manti Mountains) stocking profile
- First record in the DWR report: June 12, 2002. Since then DWR has logged 68 stockings here in 25 different years, 61,310 fish in all.
- Species stocked 2021 to 2026, by share of fish: rainbow trout 69% (11,550 fish), brook trout 14% (2,311 fish), arctic grayling 12% (2,002 fish) and tiger trout 5% (800 fish).
- Busiest months in the record: July (41% of records) and June (37% of records).
- Stocked fish averaged 7.8 in. from 2021 to 2026 (per-record averages ranged from 1.8 to 10.9 in.). The yearly average was 10.3 in. in 2021 and 7.8 in. in 2025.
- Fish stocked 2021 to 2026: 16,663, the 25th most of 71 stocked waters in Sanpete County and 254th of 1,076 statewide.
- Nearest other water with a page: Upper WPA Pond (Manti Mountains), 0.5 mi away.
- Other water with this name: Deep Lake in Sevier County, 41 mi away. DWR lists them as separate waters (DWR water ids VI444 and VI498).
Computed from Utah DWR stocking records (fish counts and average lengths as DWR reports them). Past stocking is history, not a schedule.
When is Deep Lake (Manti Mountains) stocked?
Based on DWR stocking records, 2021 to 2025. Stocked in 5 of those 5 years.
2025 stocking: 3 records, first on July 2, last on Aug. 15.
DWR does not publish stocking schedules. This is past stocking, not a promise. How we read patterns.
Deep Lake (Manti Mountains) stocking history by year
| Year | Records | Fish | Avg. length | Species |
|---|---|---|---|---|
| 2026 | 2 | 2,478 | 2.0 in. | Arctic grayling, Brook trout |
| 2025 | 3 | 2,540 | 7.8 in. | Rainbow trout, Tiger trout, Brook trout |
| 2024 | 3 | 2,827 | 8.7 in. | Rainbow trout, Brook trout |
| 2023 | 2 | 2,406 | 8.9 in. | Rainbow trout, Brook trout |
| 2022 | 3 | 3,310 | 8.6 in. | Brook trout, Rainbow trout |
| 2021 | 4 | 3,102 | 10.3 in. | Brook trout, Rainbow trout |
| 2020 | 2 | 2,610 | 8.6 in. | Brook trout, Rainbow trout |
| 2019 | 2 | 2,048 | 9.7 in. | Brook trout, Rainbow trout |
| 2018 | 3 | 2,673 | 8.5 in. | Brook trout, Rainbow trout |
| 2017 | 4 | 2,298 | 9.4 in. | Brook trout, Rainbow trout |
| 2016 | 3 | 2,306 | 10.0 in. | Rainbow trout, Brook trout |
| 2015 | 3 | 2,106 | 11.8 in. | Rainbow trout |
| 2014 | 4 | 2,216 | 10.2 in. | Rainbow trout |
| 2013 | 2 | 2,512 | 9.8 in. | Rainbow trout |
| 2012 | 2 | 1,759 | 9.5 in. | Rainbow trout |
| 2011 | 1 | 1,760 | 10.0 in. | Rainbow trout |
| 2010 | 2 | 2,503 | 8.7 in. | Brook trout, Rainbow trout |
| 2009 | 3 | 2,305 | 9.3 in. | Brook trout, Rainbow trout |
| 2008 | 2 | 2,002 | 9.5 in. | Rainbow trout |
| 2007 | 3 | 2,500 | 8.6 in. | Tiger trout, Brook trout, Rainbow trout |
| 2006 | 3 | 2,691 | 8.7 in. | Brook trout, Rainbow trout |
| 2005 | 4 | 2,219 | 10.2 in. | Brook trout, Rainbow trout |
| 2004 | 4 | 3,429 | 7.7 in. | Brook trout, Rainbow trout |
| 2003 | 2 | 2,511 | 8.9 in. | Rainbow trout |
| 2002 | 2 | 2,199 | 9.2 in. | Rainbow trout |
All stocking records 2021 to Nov. 10, 2025 (15)
| Aug. 15, 2025 | Rainbow trout | 1,440 | 10.9 in. |
| Aug. 15, 2025 | Tiger trout | 800 | 3.9 in. |
| July 2, 2025 | Brook trout | 300 | 3.2 in. |
| July 9, 2024 | Rainbow trout | 1,600 | 10.8 in. |
| July 9, 2024 | Rainbow trout | 500 | 10.8 in. |
| July 1, 2024 | Brook trout | 727 | 2.7 in. |
| July 17, 2023 | Rainbow trout | 2,106 | 9.8 in. |
| July 6, 2023 | Brook trout | 300 | 2.6 in. |
| July 14, 2022 | Brook trout | 306 | 3.0 in. |
| June 30, 2022 | Rainbow trout | 1,502 | 9.1 in. |
| June 30, 2022 | Rainbow trout | 1,502 | 9.1 in. |
| June 29, 2021 | Brook trout | 202 | 2.8 in. |
| June 17, 2021 | Rainbow trout | 400 | 10.8 in. |
| June 15, 2021 | Rainbow trout | 1,250 | 10.8 in. |
| June 15, 2021 | Rainbow trout | 1,250 | 10.8 in. |
Fishing rules
No water-specific entry for Deep Lake (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
Facility list from DWR Fish Utah. Check with the land manager before you go; facilities close seasonally.
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Deep Lake (Manti Mountains) questions
When is Deep Lake (Manti Mountains) stocked?
DWR does not publish stocking schedules. Past records show Deep Lake (Manti Mountains) was stocked in early July (3 of the last 5 years). The most recent stocking in the DWR report is dated Sept. 10, 2026.
What fish are in Deep Lake (Manti Mountains)?
DWR lists brook trout and rainbow trout as likely catches. Since 2021 DWR has stocked rainbow trout, brook trout, arctic grayling 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.