Garfield County · stream · order 5 river · ~77 cfs typical
Mammoth Creek
Stocked 4× on record · Utah DWR
Mammoth Creek is a stream in Garfield County, Utah, stocked with Brook Trout, Brown Trout, Brown Trout and Cutthroat Trout - Bonneville — most recently on Jun 23, 2026. FishableWaters aggregates every stocking record for this water from Utah DWR; the latest schedule and today's bite windows are above.
Best days this week
Days near a new or full moon tend to fish best.
Today's bite windows
Conditions, next 3 days
Today
Mostly clear
87°
54°
14 mph
1%
Fri
Mostly clear
92°
61°
13 mph
1%
Sat
Overcast
94°
64°
15 mph
0%
↗ pressure risingPost-front rising pressure can slow things down for a day.
Stocking ledger
| — 2026 — | ||||
| Jun 23 | Rainbow Trout | 242 | 10.54" | |
| May 20 | Tiger Trout | 500 | 10.19" | |
| May 18 | Rainbow Trout | 260 | 10.12" | |
| May 6 | Brown Trout | 3,046 | 3.28" | |
Angler reports
What's biting
No reports yet — be the first
Best bite times
No reports yet
Field notes
No notes yet
All Utah waters with brook trout → · All Utah waters with brown trout →
Nearby waters
- Limestone Creek1.2 mi
- Spring Branch2.5 mi
- Asay Creek3.3 mistocked Jun 12, 2026
- West Fork Asay Creek4.5 mi
- Castle Creek5.7 mi
- Pass Creek6.5 mi
- Wilson Creek6.6 mi
- Dry Lake7.0 mi
Seasons, limits, and rules are the state's call — check the official UT regulations and buy your license before you go. We link the source; we never restate the rules.
Mammoth Creek fishing — FAQ
What fish are stocked in Mammoth Creek?+
Mammoth Creek is stocked with Brook Trout, Brown Trout, Brown Trout and Cutthroat Trout - Bonneville in Garfield County, Utah, most recently on Jun 23, 2026 by Utah DWR. The full stocking ledger is on this page.
When does Mammoth Creek get stocked?+
Going by 4 records since 2026, stocking at Mammoth Creek peaks in May. Check this page for the season's scheduled and most recent stockings.
Do I need a license to fish Mammoth Creek?+
Yes — Utah requires a fishing license. Buy one from the state and check current seasons and limits before you go; both are linked on this page.
Where is Mammoth Creek?+
Mammoth Creek is a stream in Garfield County, Utah. Driving directions and an interactive topo map are on this page.
Data: Utah DWR · updated Jun 23, 2026 · checked daily · we publish what agencies publish, nothing else.