Noise Levels in Scotts Valley, CA | Find Quiet Neighborhoods With Our Sound Map
51 dBA
Average noise across Scotts Valley
Quiet office to normal conversation
3,218
Residents above the EPA 55 dBA threshold
21% of Scotts Valley residents
80 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Scotts Valley 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.
Overall
Road
Rail
Aviation
Click the map to explore
35 dBa55 dBa (EPA limit)90+ dBa
3545557090
Quietest (dBA)Loudest
Colorblind friendlyoff
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 3,218 Scotts Valley residents, or 21.2%, live above that level. By land area, 28.1% of Scotts Valley is above 55 dBA.
Average noise levels for Scotts Valley residents, grouped by direction from the center of Scotts Valley. Eastern Scotts Valley carries the highest population-weighted average; Western Scotts Valley carries the lowest. Just 17% of residents in Western Scotts Valley live in blocks above the EPA's 55 dBA threshold, about half the share in Eastern Scotts Valley.
Central Scotts Valley
51.2 dBA · Moderate
Quiet office to normal conversation
19% of people above 55 dBA
QuietLoud
Eastern Scotts Valley
54.5 dBA · Moderate-loud
Quiet office to normal conversation
36% of people above 55 dBA
QuietLoud
Northern Scotts Valley
50.1 dBA · Moderate
Quiet office
14% of people above 55 dBA
QuietLoud
Southern Scotts Valley
52.4 dBA · Moderate
Quiet office to normal conversation
22% of people above 55 dBA
QuietLoud
Western Scotts Valley
48.4 dBA · Mostly quiet
Quiet office
17% of people above 55 dBA
QuietLoud
Eastern Scotts Valley sounds about 53% louder than Western Scotts Valley to the human ear, a 6.1 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 do you need to be?
produces an estimated 80 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 quiet office.
At source
80 dBA
City bus interior
165 ft
69 dBA
Highway traffic 50 ft away
330 ft
62 dBA
Busy restaurant
660 ft
55 dBA
Quiet office to normal conversation
¼ mile
48 dBA
Quiet office
½ mile
42 dBA
Quiet suburban street at night
Calculated from the model's calibrated attenuation formula. About 39% of Scotts Valley sits under tree canopy (about average for cities) and roughly 25% 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.
-->
Rail Noise
Active freight rail runs through parts of Scotts Valley. For most blocks the rail-only contribution is small. Combined road-plus-rail noise rarely exceeds road noise on its own. The exceptions are the handful of blocks within roughly a quarter mile of the right-of-way during pass-through hours.
Use the Rail toggle on the map above to isolate rail's contribution from road and aviation.
How Noise Is Distributed Across Scotts Valley
The bar chart below shows the share of Scotts Valley residents in each noise band. About 79% of residents live below the EPA's 55 dBA threshold, and roughly 8% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Scotts Valley Compares
Scotts Valley sits at the quieter end of the spectrum. Below: how Scotts Valley's average outdoor noise and share of residents above the EPA threshold compare with Aptos, Soquel, Capitola, and Rio del Mar.
Average noise level (dBA)
Scotts Valley's 51.3 dBA pop-weighted average is at the quieter end of the spectrum. California as a whole averages 54.0 dBA and the U.S. averages 52.0 dBA. Both are lower than Scotts Valley because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 21.2% of Scotts Valley residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's in the middle of its peer group. Measured by land area instead, 28.1% of Scotts Valley's footprint sits above 55 dBA, against a California average of 36.0% and a national average of 28.1%.
What This Means if You're Moving to Scotts Valley
Distance from highways matters more than the neighborhood name. Two homes in the same zip code can differ by 20 dBA if one sits 100 meters from and the other 500 meters away. The model captures this at 100-meter resolution, so noise exposure changes block by block.
Tree canopy can help reduce modeled noise exposure. Roughly 39% of Scotts Valley is under tree cover (about average for cities), and the dominant land cover is evergreen forest. Both are measured from federal USDA Forest Service and USGS satellite imagery at 30-meter resolution. Streets with 60% or higher canopy show 3 to 5 dBA lower noise than comparable streets with bare ground or pavement, which is why the per-place decay rate above already accounts for it.
Sources & Methodology
The BestNeighborhood noise model is calibrated against nearly one million federal ground-truth measurements across four states. Road noise is computed from segment-level federal traffic data and propagated outward using physics-based acoustic decay, with attenuation rates that depend on the surrounding land cover.
All inputs are published federal datasets. Block-level noise is computed by combining road, rail, and aviation sound sources in the energy domain, the same physics used in professional environmental noise assessments. Read the full methodology.
