This map shows modeled outdoor noise across Flowerdale at 100-meter resolution, combining road, aviation, and rail sources. Green areas measure below 45 dBA. Orange and red exceed the EPA's 55 dBA outdoor threshold linked to long-term health effects. Use the layer toggles to view each source on its own or all together.
What the numbers sound like
- 30 dBAWhisper
- 40 dBASoft rainfall
- 45 dBAQuiet suburban street at night
- 50 dBAQuiet office
- 55 dBAEPA outdoor threshold: light traffic 100 ft away
- 60 dBANormal conversation an arm's length away
- 65 dBABusy restaurant
- 70 dBAHighway traffic 50 ft away
- 80 dBACity bus interior
Population Above the EPA Outdoor Threshold
The EPA's 55 dBA outdoor reference level is a common benchmark for residential noise exposure, especially for activity interference, annoyance, and long-term community noise concerns. About 5 Flowerdale residents, or 1.8%, live above that level. By land area, 5.6% of Flowerdale is above 55 dBA.
See how noise in Flowerdale compares to similar-sized cities.
Noise by Part of Flowerdale
Average noise levels for Flowerdale residents, grouped by direction from the center of Flowerdale. Southern Flowerdale carries the highest population-weighted average; Western Flowerdale carries the lowest. Just 0% of residents in Western Flowerdale live in blocks above the EPA's 55 dBA threshold, a fifth of the share in Southern Flowerdale.
Northern Flowerdale
0% of people above 55 dBA
Southern Flowerdale
7% of people above 55 dBA
Western Flowerdale
0% of people above 55 dBA
Southern Flowerdale sounds about 145% louder than Western Flowerdale to the human ear, a 12.9 dBA gap. Every 10 dBA roughly doubles perceived loudness. Within any of these directions, two homes a quarter mile apart can still differ by 10 or more dBA depending on how close they sit to a major highway.
How far back from Coley Rd do you need to be?
Coley Rd produces an estimated 57 dBA at its loudest centerline points. Noise drops logarithmically with distance, with the exact rate depending on what's between you and the road. Tree cover, walls, terrain, and pavement type all matter. At roughly a quarter mile back, traffic fades into the noise level of a soft rainfall.
Calculated from the model's calibrated attenuation formula. About 6% of Flowerdale sits under tree canopy (lighter than most cities) and roughly 0% is impervious surface like pavement and rooftops. Both are folded into the per-place decay rate above. Heavier canopy pulls noise down faster with distance; impervious surfaces slow the drop.