Noise Levels in Pleasant Valley, Walnut Creek, CA | Find Quiet Neighborhoods With Our Sound Map
60 dBA
Average noise across Pleasant Valley
Normal conversation an arm’s length away
2,693
Residents above the EPA 55 dBA threshold
84% of Pleasant Valley residents
87 dBA
Loudest residential point
Lawnmower at 1 m
This map shows modeled outdoor noise across Pleasant 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.
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 2,693 Pleasant Valley residents, or 83.9%, live above that level. By land area, 83.7% of Pleasant Valley is above 55 dBA.
16.3% below 55 dBA
83.7% above 55 dBA
See how noise in Pleasant Valley compares to similar-sized neighborhoods.
Noise by Part of Pleasant Valley
Average noise levels for Pleasant Valley residents, grouped by direction from the center of Pleasant Valley. The highest population-weighted average is in northern Pleasant Valley; the lowest is in northeastern Pleasant Valley, where just 61% of residents live in blocks above the EPA's 55 dBA threshold, roughly the same as the share in the loudest section.
Northern Pleasant Valley
73.2 dBA · Loud
City bus interior
Southeastern Pleasant Valley
71.3 dBA · Loud
City bus interior
Central Pleasant Valley
67.0 dBA · Loud
Highway traffic 50 ft away
Western Pleasant Valley
58.0 dBA · Loud
Normal conversation an arm’s length away
Northeastern Pleasant Valley
56.7 dBA · Moderate-loud
Normal conversation an arm’s length away
To the human ear, noise in northern Pleasant Valley sounds about 214% louder than in northeastern Pleasant Valley, a 16.5 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-680 do you need to be?
I-680 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 suburban street at night.
At source
80 dBA
City bus interior
165 ft
66 dBA
Highway traffic 50 ft away
330 ft
59 dBA
Normal conversation an arm’s length away
660 ft
51 dBA
Quiet office
¼ mile
43 dBA
Quiet suburban street at night
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 10% of Pleasant Valley sits under tree canopy (lighter than most neighborhoods) and roughly 62% 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 Pleasant 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.
Airport Noise
San Francisco Bay Oakland International (OAK) sits southwest of Pleasant Valley. The U.S. Department of Transportation models aviation noise around this airport from federal traffic data, and the model uses those federal measurements rather than synthetic predictions.
Blocks under the approach and departure paths carry combined road-plus-aviation noise, with some exceeding 65 dBA on the map's Overall layer. Blocks on the opposite side of Pleasant Valley, particularly to the northeast, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across Pleasant Valley
The bar chart below shows the share of Pleasant Valley residents in each noise band. About 17% of residents live below the EPA's 55 dBA threshold, and roughly 60% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Pleasant Valley Compares
Pleasant Valley sits the highest among the peer group. Below: how Pleasant Valley's average outdoor noise and share of residents above the EPA threshold compare with Northgate Area, Ellis Lake, Downtown Lafayette, and larkey-park-area-walnut-creek-ca.
Average noise level (dBA)
Pleasant Valley's 60.3 dBA pop-weighted average is the highest among the peer group. California as a whole averages 54.0 dBA and the U.S. averages 52.0 dBA. Both are lower than Pleasant Valley because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 83.9% of Pleasant Valley 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, 83.7% of Pleasant 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 Pleasant 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 I-680 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 10% of Pleasant Valley is under tree cover (lighter than most neighborhoods), and the dominant land cover is low-intensity developed land. 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.
- Airport noise is directional. San Francisco Bay Oakland International's approach paths concentrate aviation noise to the southwest. Neighborhoods to the northeast of downtown show no measurable contribution from the airport.
