Monticello Lake fishing
Monticello Lake was last stocked on July 27, 2026 with 1,000 tiger trout (3.0 in. average), according to the Utah DWR fish stocking report. It is a 3-acre lake in San Juan County, Utah. From 2021 to 2026, DWR stocked 15,074 fish here, the 8th most of 16 stocked waters in San Juan County.
Latest fishing report
Fall outlook: cooling water should clear out the summer algae, and trout then feed hard ahead of winter. Expect fair to good rainbow trout fishing on natural baits, lures and flies.
Our summary of the Utah DWR fishing report dated Sept. 4, 2026, in our own words. Read the original on DWR Fish Utah.
Monticello Lake stocking report, last 12 months
| July 27, 2026 | Tiger trout | 1,000 | 3.0 in. |
| April 23, 2026 | Rainbow trout | 980 | 9.9 in. |
| April 8, 2026 | Rainbow trout | 1,020 | 10.1 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 Monticello Lake stocked?
Based on DWR stocking records, 2021 to 2025. Stocked in 5 of those 5 years.
2025 stocking: 3 records, first on April 22, last on July 17.
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.
Monticello Lake stocking profile
- First record in the DWR report: May 13, 2002. Since then DWR has logged 96 stockings here in 25 different years, 93,072 fish in all.
- Species stocked 2021 to 2026, by share of fish: rainbow trout 67% (10,073 fish) and tiger trout 33% (5,001 fish).
- Busiest months in the record: July (32% of records) and June (23% of records).
- Stocked fish averaged 7.7 in. from 2021 to 2026 (per-record averages ranged from 2.5 to 10.9 in.). The yearly average was 10.3 in. in 2021 and 7.9 in. in 2025.
- Fish stocked 2021 to 2026: 15,074, the 8th most of 16 stocked waters in San Juan County and 266th of 1,068 statewide.
- Nearest other water with a page: Foy Lake, 2.3 mi away.
Computed from Utah DWR stocking records (fish counts and average lengths as DWR reports them). Past stocking is history, not a schedule.
Monticello Lake stocking history by year
| Year | Records | Fish | Avg. length | Species |
|---|---|---|---|---|
| 2026 | 3 | 3,000 | 7.7 in. | Tiger trout, Rainbow trout |
| 2025 | 3 | 3,025 | 7.9 in. | Tiger trout, Rainbow trout |
| 2024 | 3 | 3,009 | 7.5 in. | Tiger trout, Rainbow trout |
| 2023 | 4 | 3,003 | 7.5 in. | Rainbow trout, Tiger trout |
| 2022 | 2 | 2,029 | 6.9 in. | Tiger trout, Rainbow trout |
| 2021 | 2 | 1,008 | 10.3 in. | Rainbow trout |
| 2020 | 4 | 3,031 | 7.6 in. | Rainbow trout, Tiger trout |
| 2019 | 4 | 4,030 | 8.5 in. | Tiger trout, Rainbow trout |
| 2018 | 4 | 4,015 | 8.0 in. | Tiger trout, Rainbow trout |
| 2017 | 4 | 3,051 | 7.8 in. | Rainbow trout, Tiger trout |
| 2016 | 4 | 4,002 | 8.4 in. | Tiger trout, Rainbow trout |
| 2015 | 4 | 4,088 | 8.1 in. | Tiger trout, Rainbow trout |
| 2014 | 4 | 4,065 | 7.8 in. | Tiger trout, Rainbow trout |
| 2013 | 4 | 3,967 | 8.0 in. | Tiger trout, Rainbow trout |
| 2012 | 5 | 4,010 | 9.0 in. | Rainbow trout, Tiger trout |
| 2011 | 5 | 4,012 | 9.1 in. | Tiger trout, Rainbow trout |
| 2010 | 5 | 5,004 | 7.9 in. | Tiger trout, Rainbow trout |
| 2009 | 5 | 4,015 | 8.4 in. | Rainbow trout, Tiger trout |
| 2008 | 4 | 4,022 | 8.7 in. | Rainbow trout, Tiger trout |
| 2007 | 5 | 4,018 | 8.9 in. | Tiger trout, Rainbow trout |
| 2006 | 5 | 4,001 | 8.7 in. | Rainbow trout, Tiger trout |
| 2005 | 3 | 5,750 | 7.5 in. | Rainbow trout, Tiger trout |
| 2004 | 5 | 5,861 | 9.0 in. | Tiger trout, Rainbow trout |
| 2003 | 2 | 2,250 | 6.5 in. | Tiger trout, Rainbow trout |
| 2002 | 3 | 4,806 | 9.9 in. | Rainbow trout |
All stocking records 2021 to Sept. 24, 2025 (14)
| July 17, 2025 | Tiger trout | 1,005 | 3.0 in. |
| June 26, 2025 | Rainbow trout | 1,000 | 10.3 in. |
| April 22, 2025 | Rainbow trout | 1,020 | 10.2 in. |
| July 3, 2024 | Tiger trout | 996 | 2.8 in. |
| July 1, 2024 | Rainbow trout | 1,013 | 9.7 in. |
| May 22, 2024 | Rainbow trout | 1,000 | 9.9 in. |
| July 17, 2023 | Rainbow trout | 684 | 9.9 in. |
| June 27, 2023 | Tiger trout | 1,001 | 2.5 in. |
| June 7, 2023 | Rainbow trout | 605 | 10.2 in. |
| May 15, 2023 | Rainbow trout | 713 | 10.0 in. |
| July 12, 2022 | Tiger trout | 999 | 2.8 in. |
| May 16, 2022 | Rainbow trout | 1,030 | 10.9 in. |
| June 17, 2021 | Rainbow trout | 504 | 10.0 in. |
| May 12, 2021 | Rainbow trout | 504 | 10.5 in. |
Fishing rules
The 2026 Utah Fishing Guidebook lists no water-specific rules for Monticello Lake 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.
Access and facilities
- Accessible
- Restrooms
Facility list from DWR Fish Utah. Check with the land manager before you go; facilities close seasonally.
Email me when Monticello Lake is stocked
Email me when Monticello Lake 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.
Monticello Lake questions
When is Monticello Lake stocked?
DWR does not publish stocking schedules. Past records show Monticello Lake was stocked in mid May (3 of the last 5 years), mid to late June (3 of the last 5 years) and mid July (3 of the last 5 years). The most recent stocking in the DWR report is dated July 27, 2026.
What fish are in Monticello Lake?
DWR lists rainbow trout and tiger trout as likely catches. Since 2021 DWR has stocked rainbow trout and tiger trout.
What are the fishing limits at Monticello Lake?
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. 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.