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.
Recent stockings at Monticello Lake
- July 27, 20261,000 tiger trout, 3.0 in. average
- April 23, 2026980 rainbow trout, 9.9 in. average
- April 8, 20261,020 rainbow trout, 10.1 in. average
- July 17, 20251,005 tiger trout, 3.0 in. average
- June 26, 20251,000 rainbow trout, 10.3 in. average
- April 22, 20251,020 rainbow trout, 10.2 in. average
Newest first, from the Utah DWR stocking report. Full stocking history.
Monticello Lake facts
- Last stocked
- July 27, 2026 (106 days ago): 1,000 tiger trout
- Stockings in 2026
- 3 (3,000 fish): 2,000 rainbow trout and 1,000 tiger trout
- County
- San Juan County
- Size
- 3 acres
- Stocked since 2021
- rainbow trout and tiger trout
- Likely catch (DWR)
- rainbow trout and tiger trout
- Average size stocked
- 7.7 in. (2021 to 2026)
- County rank
- 8th most fish of 16 stocked waters in San Juan County since 2021
- Name in DWR report
- MONTICELLO L
- Nearest water
- Foy Lake, 2.3 mi
- Rules
- Statewide rules (no water-specific entry in the 2026 guidebook)
Latest fishing report
Fall outlook: cooling water should clear out the summer algae, and trout then feed actively to bulk up ahead of winter. DWR expects fair to good rainbow trout fishing with natural baits, lures and flies.
This report is more than 60 days old. Conditions have likely changed.
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 Nov. 10, 2026; newest record dated Nov. 19, 2026. DWR posts stockings after they happen and does not publish schedules.
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 270th of 1,076 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.
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. This is past stocking, not a promise. How we read patterns.
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 Nov. 10, 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
No water-specific entry for Monticello Lake 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
- Accessible
- Restrooms
Facility list from DWR Fish Utah. Check with the land manager before you go; facilities close seasonally.
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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.
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.