This map shows modeled outdoor noise across North Park Riverside 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 1,041 North Park Riverside residents, or 28.5%, live above that level. By land area, 31.2% of North Park Riverside is above 55 dBA.
See how noise in North Park Riverside compares to similar-sized neighborhoods.
Noise by Part of North Park Riverside
Average noise levels for North Park Riverside residents, grouped by direction from the center of North Park Riverside. Southern North Park Riverside carries the highest population-weighted average; Northern North Park Riverside carries the lowest. Just 0% of residents in Northern North Park Riverside live in blocks above the EPA's 55 dBA threshold, a fifth of the share in Southern North Park Riverside.
Central North Park Riverside
33% of people above 55 dBA
Eastern North Park Riverside
12% of people above 55 dBA
Northern North Park Riverside
0% of people above 55 dBA
Southern North Park Riverside
75% of people above 55 dBA
Western North Park Riverside
26% of people above 55 dBA
Southern North Park Riverside sounds about 1063% louder than Northern North Park Riverside to the human ear, a 35.4 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 68 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 5% of North Park Riverside sits under tree canopy (lighter than most neighborhoods) and roughly 40% 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.