Hiawatha, IA Noise Levels
Hiawatha, IA: what the federal noise map shows
At Hiawatha, IA, road, rail and aircraft noise all fall below the 45 dB(A) floor BTS's national map can distinguish from silence. That's the reading at Hiawatha's Census-defined center point, not any one street, BTS's map is a live raster, not a per-address service.
Where Hiawatha ranks
Hiawatha is one of 8,515 places in this dataset with no measurable transportation noise at all, too quiet to rank on loudness. About 7,347 people live there, making it the 3,935th largest place in this dataset.
Your street may differ from Hiawatha's reading
For a single house or lot in Hiawatha rather than the town-wide figure above, BTS's own map is the same free source, queried directly.
More on how this number was built
For exactly which federal dataset feeds Hiawatha's figure, see the methodology guide. The guide to reading a quiet result explains what "no measurable noise" actually means at Hiawatha.