Fishing Report
Big Flat Reservoir Fishing Report
Marysvale, UT
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.
38.441149, -112.061046
Est. water temp
68.6°F
v1 estimate from air temperature — not a sensor reading
Species on record
No species on record yet for this lake.
Location
Big Flat Reservoir · 38.4411, -112.0610
Map data © OpenFreeMap, OpenMapTiles, OpenStreetMap contributors
Nearby
Other lakes nearby
FAQ
Common questions
What fish are in Big Flat Reservoir?
No fish species have been recorded for Big Flat Reservoir yet. Check the live conditions to plan a trip on the surrounding water.
When's the best time to fish Big Flat Reservoir?
No species are modeled for Big Flat Reservoir 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 Reservoir to see the best window for current conditions.
Where is Big Flat Reservoir?
Big Flat Reservoir is near Marysvale, UT, at 38.4411, -112.0610.
Plan your trip to Big Flat Reservoir
Get the hour-by-hour bite forecast and the best times to fish Big Flat Reservoir, scored against live National Weather Service weather for this exact spot — showing what every input contributed and how well the evidence supports it.