This map shows modeled outdoor noise across Westhaven Trails 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 1,621 Westhaven Trails residents, or 47.7%, live above that level. By land area, 43.5% of Westhaven Trails is above 55 dBA.
See how noise in Westhaven Trails compares to similar-sized neighborhoods.
Noise by Part of Westhaven Trails
Average noise levels for Westhaven Trails residents, grouped by direction from the center of Westhaven Trails. The highest population-weighted average is in southeastern Westhaven Trails; the lowest is in southwestern Westhaven Trails, where just 25% of residents live in blocks above the EPA's 55 dBA threshold, about two-thirds of the share in the loudest section.
Southeastern Westhaven Trails
45% of people above 55 dBA
Central Westhaven Trails
39% of people above 55 dBA
Southwestern Westhaven Trails
25% of people above 55 dBA
To the human ear, noise in southeastern Westhaven Trails sounds about 27% louder than in southwestern Westhaven Trails, a 3.4 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 64 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 34% of Westhaven Trails sits under tree canopy (much heavier than most neighborhoods) and roughly 34% 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.