Fishing Report
Upper Flat Lake Fishing Report
Brussels, 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.
39.009771, -90.567897
Est. water temp
73°F
v1 estimate from air temperature — not a sensor reading
Species on record
No species on record yet for this lake.
Location
Upper Flat Lake · 39.0098, -90.5679
Map data © OpenFreeMap, OpenMapTiles, OpenStreetMap contributors
Nearby
Other lakes nearby
FAQ
Common questions
What fish are in Upper Flat Lake?
No fish species have been recorded for Upper Flat Lake yet. Check the live conditions to plan a trip on the surrounding water.
When's the best time to fish Upper Flat Lake?
No species are modeled for Upper 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 Upper Flat Lake to see the best window for current conditions.
Where is Upper Flat Lake?
Upper Flat Lake is near Brussels, IL, at 39.0098, -90.5679.
Plan your trip to Upper Flat Lake
Get the hour-by-hour bite forecast and the best times to fish Upper 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.