Fishing Report
Bismark Reservoir Fishing Report
Mammoth, MT
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.
45.607850, -112.053358
Est. water temp
46.7°F
v1 estimate from air temperature — not a sensor reading
Species on record
No species on record yet for this lake.
Location
Bismark Reservoir · 45.6079, -112.0534
Map data © OpenFreeMap, OpenMapTiles, OpenStreetMap contributors
Nearby
Other lakes nearby
FAQ
Common questions
What fish are in Bismark Reservoir?
No fish species have been recorded for Bismark Reservoir yet. Check the live conditions to plan a trip on the surrounding water.
When's the best time to fish Bismark Reservoir?
No species are modeled for Bismark 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 Bismark Reservoir to see the best window for current conditions.
Where is Bismark Reservoir?
Bismark Reservoir is near Mammoth, MT, at 45.6079, -112.0534.
Plan your trip to Bismark Reservoir
Get the hour-by-hour bite forecast and the best times to fish Bismark Reservoir, scored against live National Weather Service weather for this exact spot — showing what every input contributed and how well the evidence supports it.