This map shows modeled outdoor noise across College Grandview District 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 1,191 College Grandview District residents, or 47.5%, live above that level. By land area, 55.4% of College Grandview District is above 55 dBA.
See how noise in College Grandview District compares to similar-sized neighborhoods.
Noise by Part of College Grandview District
Average noise levels for College Grandview District residents, grouped by direction from the center of College Grandview District. Southern College Grandview District carries the highest population-weighted average; Northern College Grandview District carries the lowest. Just 23% of residents in Northern College Grandview District live in blocks above the EPA's 55 dBA threshold, a third of the share in Southern College Grandview District.
Central College Grandview District
46% of people above 55 dBA
Eastern College Grandview District
48% of people above 55 dBA
Northern College Grandview District
23% of people above 55 dBA
Southern College Grandview District
76% of people above 55 dBA
Western College Grandview District
52% of people above 55 dBA
Southern College Grandview District sounds about 34% louder than Northern College Grandview District to the human ear, a 4.2 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 do you need to be?
produces an estimated 65 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 19% of College Grandview District sits under tree canopy (about average for neighborhoods) and roughly 35% 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.