Noise Levels in Ripperdan, CA | Find Quiet Neighborhoods With Our Sound Map
45 dBA
Average noise across Ripperdan
Quiet suburban street at night
24
Residents above the EPA 55 dBA threshold
6% of Ripperdan residents
78 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Ripperdan 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 24 Ripperdan residents, or 5.7%, live above that level. By land area, 2.7% of Ripperdan is above 55 dBA.
97.3% below 55 dBA
2.7% above 55 dBA
See how noise in Ripperdan compares to similar-sized cities.
Noise by Part of Ripperdan
Average noise levels for Ripperdan residents, grouped by direction from the center of Ripperdan. Eastern Ripperdan carries the highest population-weighted average; Northern Ripperdan carries the lowest. Just 0% of residents in Northern Ripperdan live in blocks above the EPA's 55 dBA threshold, a fifth of the share in Eastern Ripperdan.
Central Ripperdan
43.8 dBA · Quiet
Quiet suburban street at night
Eastern Ripperdan
50.4 dBA · Moderate
Quiet office
Northern Ripperdan
38.6 dBA · Quiet
Soft rainfall
Southern Ripperdan
47.7 dBA · Mostly quiet
Quiet office
Western Ripperdan
42.4 dBA · Quiet
Quiet suburban street at night
Eastern Ripperdan sounds about 127% louder than Northern Ripperdan to the human ear, a 11.8 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 State Rte 99 do you need to be?
State Rte 99 produces an estimated 76 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.
At source
76 dBA
City bus interior
165 ft
62 dBA
Busy restaurant
330 ft
55 dBA
Quiet office to normal conversation
660 ft
47 dBA
Quiet office
¼ mile
39 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 0% of Ripperdan sits under tree canopy (much lighter than most cities) and roughly 2% 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.
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Rail Noise
Active freight rail runs through parts of Ripperdan. 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 Ripperdan
The bar chart below shows the share of Ripperdan residents in each noise band. About 100% of residents live below the EPA's 55 dBA threshold, and roughly 0% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Ripperdan Compares
Ripperdan sits at the louder end of the spectrum. Below: how Ripperdan's average outdoor noise and share of residents above the EPA threshold compare with Parkwood, Rolinda, Sharon, and La Vina.
Average noise level (dBA)
Ripperdan's 45.0 dBA pop-weighted average is at the louder end of the spectrum. California as a whole averages 54.0 dBA and the U.S. averages 52.0 dBA. Both are lower than Ripperdan because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 5.7% of Ripperdan residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's more than any of its peer group. Measured by land area instead, 2.7% of Ripperdan'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 Ripperdan
- 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 State Rte 99 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 0% of Ripperdan is under tree cover (much lighter than most cities), and the dominant land cover is cultivated cropland. 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.
