Diamond Fork River fishing
Diamond Fork River was last stocked on June 10, 2026 with 17,564 brown trout (3.2 in. average), according to the Utah DWR fish stocking report. It is a river or stream in Utah County, Utah. From 2021 to 2026, DWR stocked 111,886 fish here, the 3rd most of 58 stocked waters in Utah County.
Diamond Fork River stocking report, last 12 months
| June 10, 2026 | Brown trout | 17,564 | 3.2 in. |
| Nov. 6, 2025 | Cutthroat trout | 6,005 | 3.5 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 Diamond Fork River stocked?
Based on DWR stocking records, 2021 to 2025. Stocked in 5 of those 5 years.
2025 stocking: 2 records, first on May 28, last on Nov. 6.
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.
Diamond Fork River stocking profile
- First record in the DWR report: Sept. 23, 2019. Since then DWR has logged 18 stockings here in 8 different years, 136,562 fish in all.
- Species stocked 2021 to 2026, by share of fish: brown trout 89% (99,333 fish) and cutthroat trout 11% (12,553 fish).
- Busiest months in the record: June (33% of records) and May (17% of records).
- Stocked fish averaged 3.6 in. from 2021 to 2026 (per-record averages ranged from 2.4 to 6.0 in.). The yearly average was 5.2 in. in 2021 and 4.0 in. in 2025.
- Fish stocked 2021 to 2026: 111,886, the 3rd most of 58 stocked waters in Utah County and 55th of 1,068 statewide.
- Nearest other water with a page: Thistle Creek, 5.2 mi away.
Computed from Utah DWR stocking records (fish counts and average lengths as DWR reports them). Past stocking is history, not a schedule.
Diamond Fork River stocking history by year
| Year | Records | Fish | Avg. length | Species |
|---|---|---|---|---|
| 2026 | 1 | 17,564 | 3.2 in. | Brown trout |
| 2025 | 2 | 24,905 | 4.0 in. | Cutthroat trout, Brown trout |
| 2024 | 2 | 21,047 | 3.2 in. | Cutthroat trout, Brown trout |
| 2023 | 3 | 36,608 | 3.2 in. | Brown trout |
| 2022 | 2 | 5,936 | 4.6 in. | Brown trout |
| 2021 | 3 | 5,826 | 5.2 in. | Cutthroat trout, Brown trout |
| 2020 | 4 | 19,665 | 5.1 in. | Rainbow trout, Brown trout |
| 2019 | 1 | 5,011 | 2.5 in. | Cutthroat trout |
All stocking records 2021 to Sept. 24, 2025 (11)
| May 28, 2025 | Brown trout | 18,900 | 4.1 in. |
| Sept. 9, 2024 | Cutthroat trout | 6,032 | 3.0 in. |
| May 9, 2024 | Brown trout | 15,015 | 3.3 in. |
| July 8, 2023 | Brown trout | 10,668 | 2.7 in. |
| June 29, 2023 | Brown trout | 5,940 | 4.9 in. |
| May 4, 2023 | Brown trout | 20,000 | 3.0 in. |
| Sept. 28, 2022 | Brown trout | 2,296 | 3.9 in. |
| June 23, 2022 | Brown trout | 3,640 | 5.0 in. |
| Oct. 13, 2021 | Cutthroat trout | 516 | 2.4 in. |
| June 22, 2021 | Brown trout | 4,860 | 5.5 in. |
| Feb. 4, 2021 | Brown trout | 450 | 6.0 in. |
Fishing rules
The 2026 Utah Fishing Guidebook lists no water-specific rules for Diamond Fork River 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
- Other activities
- Cycling, Hiking, Mountain biking, OHV or 4WD trails, Wildlife watching
- Facilities
- Covered picnic area, Drinking water, Electrical hookups, Fire rings, Picnic tables, Restrooms, Trails/shoreline paths
- Camping
- RV camping
Facility list from DWR Fish Utah. Check with the land manager before you go; facilities close seasonally.
Email me when Diamond Fork River is stocked
Email me when Diamond Fork River 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.
Diamond Fork River questions
When is Diamond Fork River stocked?
DWR does not publish stocking schedules. Past records show Diamond Fork River was stocked in late June (3 of the last 5 years). The most recent stocking in the DWR report is dated June 10, 2026.
What fish are in Diamond Fork River?
DWR lists brown trout as likely catches and cutthroat trout as possible. Since 2021 DWR has stocked brown trout and cutthroat trout.
What are the fishing limits at Diamond Fork River?
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.