Millsite Reservoir fishing
Millsite Reservoir was last stocked on July 21, 2026 with 5,004 splake (2.7 in. average), according to the Utah DWR fish stocking report. It is a 435-acre reservoir in Emery County, Utah, listed by DWR as a State Park. From 2021 to 2026, DWR stocked 117,282 fish here, the 3rd most of 15 stocked waters in Emery County.
Latest fishing report
Fall outlook: crowds thin after Labor Day, and leftover rainbows get more active as the water cools and pressure drops. Expect fair fishing on common 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.
Millsite Reservoir stocking report, last 12 months
| July 21, 2026 | Splake | 5,004 | 2.7 in. |
| May 12, 2026 | Tiger trout | 4,950 | 3.0 in. |
| March 24, 2026 | Rainbow trout | 3,900 | 9.9 in. |
| March 24, 2026 | Rainbow trout | 3,000 | 9.9 in. |
| Oct. 27, 2025 | Cutthroat trout | 3,990 | 2.3 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 Millsite Reservoir stocked?
Based on DWR stocking records, 2021 to 2025. Stocked in 5 of those 5 years.
2025 stocking: 4 records, first on March 6, last on Oct. 27.
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.
Millsite Reservoir stocking profile
- First record in the DWR report: May 7, 2002. Since then DWR has logged 83 stockings here in 21 different years, 587,237 fish in all.
- Species stocked 2021 to 2026, by share of fish: splake 33% (38,617 fish), rainbow trout 31% (36,919 fish), cutthroat trout 23% (27,097 fish) and tiger trout 12% (14,649 fish).
- Busiest months in the record: April (27% of records) and July (23% of records).
- Stocked fish averaged 5.2 in. from 2021 to 2026 (per-record averages ranged from 1.7 to 10.9 in.). The yearly average was 4.8 in. in 2021 and 5.4 in. in 2025.
- Fish stocked 2021 to 2026: 117,282, the 3rd most of 15 stocked waters in Emery County and 51st of 1,068 statewide.
- Nearest other water with a page: Ferron Creek, 3.8 mi away.
Computed from Utah DWR stocking records (fish counts and average lengths as DWR reports them). Past stocking is history, not a schedule.
Millsite Reservoir stocking history by year
| Year | Records | Fish | Avg. length | Species |
|---|---|---|---|---|
| 2026 | 4 | 16,854 | 5.7 in. | Splake, Tiger trout, Rainbow trout |
| 2025 | 4 | 20,027 | 5.4 in. | Cutthroat trout, Splake, Rainbow trout |
| 2024 | 8 | 29,684 | 5.0 in. | Cutthroat trout, Tiger trout, Splake, Rainbow trout |
| 2023 | 5 | 20,114 | 5.0 in. | Cutthroat trout, Splake, Rainbow trout |
| 2022 | 4 | 13,416 | 6.0 in. | Cutthroat trout, Splake, Rainbow trout |
| 2021 | 4 | 17,187 | 4.8 in. | Cutthroat trout, Rainbow trout |
| 2020 | 3 | 11,071 | 6.9 in. | Splake, Rainbow trout |
| 2019 | 4 | 8,327 | 10.2 in. | Cutthroat trout, Rainbow trout |
| 2014 | 3 | 23,158 | 6.6 in. | Rainbow trout, Tiger trout |
| 2013 | 4 | 54,179 | 3.8 in. | Rainbow trout, Cutthroat trout, Splake |
| 2012 | 3 | 17,279 | 7.1 in. | Cutthroat trout, Tiger trout, Rainbow trout |
| 2011 | 4 | 39,792 | 5.6 in. | Cutthroat trout, Rainbow trout, Splake |
| 2010 | 5 | 32,135 | 4.9 in. | Splake, Rainbow trout |
| 2009 | 6 | 46,743 | 3.5 in. | Cutthroat trout, Tiger trout, Rainbow trout |
| 2008 | 5 | 42,506 | 4.1 in. | Tiger trout, Rainbow trout |
| 2007 | 2 | 20,014 | 4.3 in. | Rainbow trout |
| 2006 | 5 | 74,616 | 3.5 in. | Splake, Rainbow trout, Tiger trout |
| 2005 | 4 | 39,987 | 4.4 in. | Rainbow trout |
| 2004 | 2 | 20,112 | 4.0 in. | Rainbow trout |
| 2003 | 2 | 19,991 | 4.1 in. | Rainbow trout |
| 2002 | 2 | 20,045 | 3.9 in. | Rainbow trout |
All stocking records 2021 to Sept. 24, 2025 (24)
| July 23, 2025 | Splake | 10,031 | 3.5 in. |
| March 13, 2025 | Rainbow trout | 2,563 | 10.3 in. |
| March 6, 2025 | Rainbow trout | 3,443 | 10.4 in. |
| Oct. 31, 2024 | Cutthroat trout | 3,976 | 2.2 in. |
| Sept. 27, 2024 | Tiger trout | 1,760 | 5.6 in. |
| July 31, 2024 | Splake | 10,009 | 2.7 in. |
| July 11, 2024 | Tiger trout | 1,496 | 10.9 in. |
| July 11, 2024 | Tiger trout | 1,496 | 10.9 in. |
| April 15, 2024 | Tiger trout | 4,947 | 2.2 in. |
| April 3, 2024 | Rainbow trout | 2,525 | 9.9 in. |
| April 1, 2024 | Rainbow trout | 3,475 | 9.9 in. |
| Oct. 17, 2023 | Cutthroat trout | 4,044 | 2.0 in. |
| June 6, 2023 | Splake | 5,108 | 3.0 in. |
| June 6, 2023 | Splake | 4,959 | 3.3 in. |
| April 10, 2023 | Rainbow trout | 3,013 | 10.0 in. |
| April 10, 2023 | Rainbow trout | 2,990 | 10.0 in. |
| Sept. 26, 2022 | Cutthroat trout | 3,900 | 1.7 in. |
| July 18, 2022 | Splake | 3,506 | 3.6 in. |
| April 5, 2022 | Rainbow trout | 2,218 | 10.2 in. |
| April 5, 2022 | Rainbow trout | 3,792 | 10.3 in. |
| Sept. 28, 2021 | Cutthroat trout | 4,068 | 2.0 in. |
| Sept. 28, 2021 | Cutthroat trout | 7,119 | 2.0 in. |
| April 1, 2021 | Rainbow trout | 2,875 | 9.9 in. |
| April 1, 2021 | Rainbow trout | 3,125 | 9.9 in. |
Fishing rules
The 2026 Utah Fishing Guidebook lists no water-specific rules for Millsite Reservoir 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
- Boating
- Boat ramp
- Camping
- Camp host, Primitive tent camping, RV camping
- Facilities
- Covered picnic area, Electrical hookups, Fire rings, Restrooms, Showers
- Accessible
- Docks, Picnic tables, Restrooms
- Other activities
- Swimming
Facility list from DWR Fish Utah. Check with the land manager before you go; facilities close seasonally.
Email me when Millsite Reservoir is stocked
Email me when Millsite Reservoir 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.
Millsite Reservoir questions
When is Millsite Reservoir stocked?
DWR does not publish stocking schedules. Past records show Millsite Reservoir was stocked in early April (4 of the last 5 years), mid to late July (3 of the last 5 years), late September (3 of the last 5 years) and mid to late October (3 of the last 5 years). The most recent stocking in the DWR report is dated July 21, 2026.
What fish are in Millsite Reservoir?
DWR lists cutthroat trout and rainbow trout as likely catches and splake and tiger trout as possible. Since 2021 DWR has stocked rainbow trout, splake, cutthroat trout and tiger trout.
What are the fishing limits at Millsite Reservoir?
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.