This map shows modeled outdoor noise across Country Club 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 4,612 Country Club residents, or 42.8%, live above that level. By land area, 45.9% of Country Club is above 55 dBA.
See how noise in Country Club compares to similar-sized cities.
Noise by Part of Country Club
Average noise levels for Country Club residents, grouped by direction from the center of Country Club. The highest population-weighted average is in central Country Club; the lowest is in eastern Country Club, where just 30% of residents live in blocks above the EPA's 55 dBA threshold, about half the share in the loudest section.
Central Country Club
70% of people above 55 dBA
Northeastern Country Club
55% of people above 55 dBA
Southeastern Country Club
44% of people above 55 dBA
Western Country Club
32% of people above 55 dBA
Eastern Country Club
30% of people above 55 dBA
To the human ear, noise in central Country Club sounds about 173% louder than in eastern Country Club, a 14.5 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 I-5 do you need to be?
I-5 produces an estimated 78 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 Country Club sits under tree canopy (much lighter than most cities) and roughly 46% 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.