Fishing Report
Big Flat Lake Fishing Report
Bartelso, IL
Modeled from National Weather Service data, plus solunar and sun/moon times computed in-house. This is a computed report, not an eyewitness catch report.
38.495623, -89.450023
Est. water temp
76.8°F
v1 estimate from air temperature — not a sensor reading
Species on record
No species on record yet for this lake.
Location
Big Flat Lake · 38.4956, -89.4500
Map data © OpenFreeMap, OpenMapTiles, OpenStreetMap contributors
Nearby
Other lakes nearby
FAQ
Common questions
What fish are in Big Flat Lake?
No fish species have been recorded for Big Flat Lake yet. Check the live conditions to plan a trip on the surrounding water.
When's the best time to fish Big Flat Lake?
No species are modeled for Big Flat Lake yet, so there's no species-specific feeding window to name. The score still gives the light window 25% of its total, an input Bitespan grades "Well supported". Check today's bite forecast for Big Flat Lake to see the best window for current conditions.
Where is Big Flat Lake?
Big Flat Lake is near Bartelso, IL, at 38.4956, -89.4500.
Plan your trip to Big Flat Lake
Get the hour-by-hour bite forecast and the best times to fish Big Flat Lake, scored against live National Weather Service weather for this exact spot — showing what every input contributed and how well the evidence supports it.