Mifflin County · lake · 1 acres
Big Flat
Big Flat is a lake in Mifflin County, Pennsylvania. FishableWaters aggregates every stocking record for this water from Pennsylvania'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
Overcast
78°
61°
9 mph
1%
Sat
Overcast
81°
64°
13 mph
17%
Sun
Showers
67°
62°
9 mph
68%
→ pressure steadyStable weather — expect a normal bite.
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
- Poe Lake2.8 mistocked Apr 28, 2026
- Muddy Creek3.7 mi
- Havice Creek4.7 mistocked Apr 23, 2026
- Laurel Run4.4 mi
- Pine Creek5.4 mi
- Treaster Run5.7 mistocked Apr 2, 2026
- Sinking Creek5.5 mistocked Apr 16, 2026
- Elk Creek5.9 mi
Seasons, limits, and rules are the state's call — check the official PA regulations and buy your license before you go. We link the source; we never restate the rules.
Big Flat fishing — FAQ
Do I need a license to fish Big Flat?+
Yes — Pennsylvania 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 Flat?+
Big Flat is a lake in Mifflin County, Pennsylvania. Driving directions and an interactive topo map are on this page.