Duchesne County · reservoir · 577 acres
Big Sand Wash Reservoir
Stocked 4× on record · Utah DWR
Big Sand Wash Reservoir is a reservoir in Duchesne County, Utah, stocked with Brown Trout, Largemouth Bass, Rainbow Trout and Rainbow Trout — most recently on Jul 16, 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
Overcast
89°
59°
16 mph
10%
Fri
Overcast
94°
64°
21 mph
2%
Sat
Mostly clear
98°
65°
14 mph
1%
↗ pressure risingPost-front rising pressure can slow things down for a day.
Stocking ledger
| — 2026 — | ||||
| Jul 16 | Walleye | 425 | 4.58" | |
| May 21 | Rainbow Trout | 400 | 13.1" | |
| May 19 | Rainbow Trout | 948 | 11.75" | |
| May 18 | Rainbow Trout | 1,120 | 11.6" | |
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 brown trout → · All Utah waters with largemouth bass →
Nearby waters
- Pigeon Water Creek2.8 mi
- Grant Hansen Reservoir Number Three4.6 mi
- Lake Boreham8.6 mi
- Antelope Creek9.4 mi
- Lake Fork River8.9 mistocked Jun 11, 2026
- Browns Draw Reservoir10.4 mistocked May 29, 2026
- Myton City Reservoir9.6 mi
- Benson Creek10.2 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.
Big Sand Wash Reservoir fishing — FAQ
What fish are stocked in Big Sand Wash Reservoir?+
Big Sand Wash Reservoir is stocked with Brown Trout, Largemouth Bass, Rainbow Trout and Rainbow Trout in Duchesne County, Utah, most recently on Jul 16, 2026 by Utah DWR. The full stocking ledger is on this page.
When does Big Sand Wash Reservoir get stocked?+
Going by 4 records since 2026, stocking at Big Sand Wash Reservoir peaks in May. Check this page for the season's scheduled and most recent stockings.
Do I need a license to fish Big Sand Wash Reservoir?+
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 Big Sand Wash Reservoir?+
Big Sand Wash Reservoir is a reservoir in Duchesne County, Utah. Driving directions and an interactive topo map are on this page.
Data: Utah DWR · updated Jul 16, 2026 · checked daily · we publish what agencies publish, nothing else.