This map shows modeled outdoor noise across Granite Springs 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 50 Granite Springs residents, or 3.5%, live above that level. By land area, 7.5% of Granite Springs is above 55 dBA.
See how noise in Granite Springs compares to similar-sized cities.
Noise by Part of Granite Springs
Average noise levels for Granite Springs residents, grouped by direction from the center of Granite Springs. Western Granite Springs carries the highest population-weighted average; Southern Granite Springs carries the lowest. Just 1% of residents in Southern Granite Springs live in blocks above the EPA's 55 dBA threshold, a third of the share in Western Granite Springs.
Central Granite Springs
0% of people above 55 dBA
Eastern Granite Springs
3% of people above 55 dBA
Northern Granite Springs
9% of people above 55 dBA
Southern Granite Springs
1% of people above 55 dBA
Western Granite Springs
6% of people above 55 dBA
Western Granite Springs sounds about 42% louder than Southern Granite Springs to the human ear, a 5.1 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 Mahopac Ave do you need to be?
Mahopac Ave 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 70% of Granite Springs sits under tree canopy (much heavier than most cities) and roughly 3% 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.