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.
Recent stockings at Millsite Reservoir
- July 21, 20265,004 splake, 2.7 in. average
- May 12, 20264,950 tiger trout, 3.0 in. average
- March 24, 20266,900 rainbow trout, 9.9 in. average
- Oct. 27, 20253,990 cutthroat trout, 2.3 in. average
- July 23, 202510,031 splake, 3.5 in. average
- March 13, 20252,563 rainbow trout, 10.3 in. average
Newest first, from the Utah DWR stocking report. Full stocking history.
Millsite Reservoir facts
- Last stocked
- July 21, 2026 (112 days ago): 5,004 splake
- Stockings in 2026
- 4 (16,854 fish): 6,900 rainbow trout, 5,004 splake and 4,950 tiger trout
- County
- Emery County
- Size
- 435 acres
- DWR program
- State Park
- Stocked since 2021
- rainbow trout, splake, cutthroat trout and tiger trout
- Likely catch (DWR)
- cutthroat trout and rainbow trout
- Average size stocked
- 5.2 in. (2021 to 2026)
- County rank
- 3rd most fish of 15 stocked waters in Emery County since 2021
- Name in DWR report
- MILLSITE RES
- Nearest water
- Ferron Creek, 3.8 mi
- Rules
- Statewide rules (no water-specific entry in the 2026 guidebook)
Latest fishing report
Fall outlook: summer crowds begin to thin after Labor Day, leaving plenty of rainbow trout that should become even more active as temperatures cool and fishing pressure drops. DWR expects rainbow trout to be abundant, with fair fishing, particularly as the water cools. Popular flies, lures and baits should all catch fish.
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.
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. |
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.
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 52nd of 1,076 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.
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. This is past stocking, not a promise. How we read patterns.
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 Nov. 10, 2025 (25)
| Oct. 27, 2025 | Cutthroat trout | 3,990 | 2.3 in. |
| 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
No water-specific entry for Millsite Reservoir 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
- 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.
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"Often stocked around now" heads-ups come from past records only, never a promise. We use your email only for these alerts. 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.
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.