Garfield County, UT
Mammoth Creek
Around here
Around Mammoth Creek
Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US
About this water
Mammoth Creek is in Garfield County, Utah. State records show it stocked 190 times between 2000 and 2026. The most-stocked species are rainbow trout, brown trout and brook trout, with 2 more on record. 63,590 rainbow trout have gone in across 114 releases.
Stocking history
190 recorded stockings
| Date | Species | Number | Size | Hatchery |
|---|---|---|---|---|
| Jun 23, 2026 | Rainbow trout | 242 | 10.5" | — |
| May 20, 2026 | Tiger trout | 500 | 10.2" | — |
| May 18, 2026 | Rainbow trout | 260 | 10.1" | — |
| May 6, 2026 | Brown trout | 3,046 | 3.3" | — |
| Jul 8, 2025 | Rainbow trout | 251 | 10.5" | — |
| Jun 4, 2025 | Tiger trout | 511 | 9.2" | — |
| Jun 4, 2025 | Tiger trout | 1,000 | 3.4" | — |
| May 28, 2025 | Rainbow trout | 252 | 10.2" | — |
| May 28, 2025 | Brown trout | 3,780 | 4.1" | — |
| May 21, 2025 | Tiger trout | 1,020 | 9.9" | — |
| Jul 18, 2024 | Rainbow trout | 260 | 9.8" | — |
| Jun 12, 2024 | Tiger trout · Trout, Tiger Bn-F*Bk-M | 501 | 9.0" | — |
Showing the 12 most recent of 190. Stocking records for Mammoth Creek published by Utah Division of Wildlife Resources. Stocking does not guarantee fish are present. Check current regulations and access before you go. See the full Utah stocking report.
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