Sanpete County · reservoir · 3 acres
Grass Flat Reservoir
Grass Flat Reservoir is a reservoir in Sanpete County, Utah. FishableWaters aggregates every stocking record for this water from Utah's fish & wildlife agency; 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
Partly cloudy
80°
57°
16 mph
4%
Fri
Overcast
82°
62°
12 mph
2%
Sat
Overcast
84°
65°
12 mph
0%
↗ pressure risingPost-front rising pressure can slow things down for a day.
Stocking ledger
No published stocking records yet. This water stays in our books — the ledger begins the hour its state agency publishes a record.
Angler reports
What's biting
No reports yet — be the first
Best bite times
No reports yet
Field notes
No notes yet
Nearby waters
- Slide Lake0.6 mi
- Academy Mill Reservoir0.6 mistocked Jul 14, 2026
- Petes Hole Reservoir1.6 mi
- Soup Bowl1.7 mistocked Jun 16, 2026
- Marys Lake2.8 mi
- Becks Creek2.8 mi
- Grassy Lake3.2 mi
- Blue Lake4.0 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.
Grass Flat Reservoir fishing — FAQ
Do I need a license to fish Grass Flat 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 Grass Flat Reservoir?+
Grass Flat Reservoir is a reservoir in Sanpete County, Utah. Driving directions and an interactive topo map are on this page.