Rainbow Lake (U-33) fishing
Rainbow Lake (U-33) was last stocked on July 16, 2026 with 2,471 brook trout (3.5 in. average), according to the Utah DWR fish stocking report. It is a lake in Duchesne County, Utah. From 2021 to 2026, DWR stocked 8,106 fish here, the 28th most of 263 stocked waters in Duchesne County.
Recent stockings at Rainbow Lake (U-33)
- July 16, 20262,471 brook trout, 3.5 in. average
- July 15, 2026524 brook trout and 501 tiger trout, 3.8 in. average
- June 26, 2024698 tiger trout, 3.6 in. average
- July 21, 20233,514 brook trout, 3.0 in. average
- July 6, 2022398 tiger trout, 3.7 in. average
- Sept. 21, 20203,496 brook trout, 3.0 in. average
Newest first, from the Utah DWR stocking report. Full stocking history.
Rainbow Lake (U-33) facts
- Last stocked
- July 16, 2026 (117 days ago): 2,471 brook trout
- Stockings in 2026
- 3 (3,496 fish): 2,995 brook trout and 501 tiger trout
- County
- Duchesne County
- Stocked since 2021
- brook trout and tiger trout
- Average size stocked
- 3.3 in. (2021 to 2026)
- County rank
- 28th most fish of 263 stocked waters in Duchesne County since 2021
- Name in DWR report
- RAINBOW L U-33
- Nearest water
- Uinta River, 3.6 mi
- Rules
- Statewide rules (no water-specific entry in the 2026 guidebook)
Rainbow Lake (U-33) stocking report, last 12 months
| July 16, 2026 | Brook trout | 2,471 | 3.5 in. |
| July 15, 2026 | Tiger trout | 501 | 4.0 in. |
| July 15, 2026 | Brook trout | 524 | 3.5 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.
Rainbow Lake (U-33) stocking profile
- First record in the DWR report: July 2, 2003. Since then DWR has logged 12 stockings here in 10 different years, 29,136 fish in all.
- Species stocked 2021 to 2026, by share of fish: brook trout 80% (6,509 fish) and tiger trout 20% (1,597 fish).
- Busiest months in the record: July (83% of records) and June (8% of records).
- Stocked fish averaged 3.3 in. from 2021 to 2026 (per-record averages ranged from 3.0 to 4.0 in.).
- Fish stocked 2021 to 2026: 8,106, the 28th most of 263 stocked waters in Duchesne County and 354th of 1,076 statewide.
- Nearest other water with a page: Uinta River, 3.6 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 Rainbow Lake (U-33) stocked?
Based on DWR stocking records, 2021 to 2025. Stocked in 3 of those 5 years.
Stocking dates moved around from year to year, so no single window repeats in 3 or more of the last 5 years.
DWR does not publish stocking schedules. This is past stocking, not a promise. How we read patterns.
Rainbow Lake (U-33) stocking history by year
| Year | Records | Fish | Avg. length | Species |
|---|---|---|---|---|
| 2026 | 3 | 3,496 | 3.5 in. | Brook trout, Tiger trout |
| 2024 | 1 | 698 | 3.6 in. | Tiger trout |
| 2023 | 1 | 3,514 | 3.0 in. | Brook trout |
| 2022 | 1 | 398 | 3.7 in. | Tiger trout |
| 2020 | 1 | 3,496 | 3.0 in. | Brook trout |
| 2017 | 1 | 3,519 | 2.5 in. | Brook trout |
| 2013 | 1 | 3,531 | 2.6 in. | Brook trout |
| 2010 | 1 | 3,496 | 2.9 in. | Brook trout |
| 2007 | 1 | 3,489 | 2.6 in. | Brook trout |
| 2003 | 1 | 3,499 | 2.5 in. | Brook trout |
All stocking records 2021 to Nov. 10, 2025 (3)
| June 26, 2024 | Tiger trout | 698 | 3.6 in. |
| July 21, 2023 | Brook trout | 3,514 | 3.0 in. |
| July 6, 2022 | Tiger trout | 398 | 3.7 in. |
Fishing rules
No water-specific entry for Rainbow Lake (U-33) 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.
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Rainbow Lake (U-33) questions
When was Rainbow Lake (U-33) last stocked?
The most recent stocking in the DWR report is dated July 16, 2026: 2,471 brook trout.
What fish are in Rainbow Lake (U-33)?
Since 2021 DWR has stocked brook trout and tiger trout.
Stocking: Utah DWR fish stocking report, fetched Nov. 10, 2026. 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.