This map shows modeled outdoor noise across Glide 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 137 Glide residents, or 6.2%, live above that level. By land area, 6.2% of Glide is above 55 dBA.
See how noise in Glide compares to similar-sized cities.
Noise by Part of Glide
Average noise levels for Glide residents, grouped by direction from the center of Glide. The highest population-weighted average is in northwestern Glide; the lowest is in southeastern Glide, where just 2% of residents live in blocks above the EPA's 55 dBA threshold, about two-thirds of the share in the loudest section.
Northwestern Glide
3% of people above 55 dBA
Northeastern Glide
3% of people above 55 dBA
Southeastern Glide
2% of people above 55 dBA
To the human ear, noise in northwestern Glide sounds about 15% louder than in southeastern Glide, a 2.0 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 Oregon Route 138 do you need to be?
Oregon Route 138 produces an estimated 58 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 22% of Glide sits under tree canopy (about average for cities) and roughly 6% 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.