Mammoth Creek
Utah DWR logged 0 trout stocking dates at Mammoth Creek in 2026 so far, 0 fish in all. The latest was on Jun 4, 2025. Utah DWR lists it as “Mammoth Cr”.
Utah DWR data pulled . Latest record in the Utah DWR data for any water: Nov 4, 2026.
Mammoth Creek in numbers
- fish stocked in 2026, through Nov 6
- 0
- by the same date in 2025
- 2,020
- in all of 2025
- 2,020
Every stocking record
Counts include small fish (fingerlings) as well as catchable trout; the average length tells them apart. Every trout release Utah DWR lists for this water in the last two years, newest first, then yearly totals since 2021. Average length is the figure DWR gives for each batch.
| Date | Species | Fish | Avg. length |
|---|---|---|---|
| Jun 4 | Tiger trout1,000 fish | 1,000 | 3.35 in |
| May 21 | Tiger trout1,020 fish | 1,020 | 9.93 in |
| Date | Species | Fish | Avg. length |
|---|---|---|---|
| Sep 11 | Cutthroat trout8,066 fish | 8,066 | 1.87 in |
| Year | Stocking dates | Fish |
|---|---|---|
| 2025 | 2 | 2,020 |
| 2023 | 1 | 8,066 |
| 2022 | 2 | 12,871 |
| 2021 | 5 | 23,520 |
Trout stocked each year
2026 is outlined because the year is not over. The tallest full year is yellow.
What is stocked here
| Species | Fish | Share |
|---|---|---|
| Cutthroat trout | 40,635 | 87% |
| Tiger trout | 5,842 | 13% |
No single map point is given for this water in the USGS names database, so no map is shown.
Also in Iron County: Woods Pond, Brian Head Pond, Leigh Hill Reservoir, Yankee Meadow Reservoir, Forebay Pond, Newcastle Reservoir, Parowan Pond, Paragonah Reservoir.
Source: DWR fish stocking report, Utah Division of Wildlife Resources. Pulled . Check the agency and the current fishing rules before you go.