Noise Levels in Colonial Manor, Sacramento, CA | Find Quiet Neighborhoods With Our Sound Map
56 dBA
Average noise across Colonial Manor
Quiet office to normal conversation
1,380
Residents above the EPA 55 dBA threshold
54% of Colonial Manor residents
74 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across Colonial Manor 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 1,380 Colonial Manor residents, or 53.8%, live above that level. By land area, 61.8% of Colonial Manor is above 55 dBA.
38.2% below 55 dBA
61.8% above 55 dBA
See how noise in Colonial Manor compares to similar-sized neighborhoods.
Noise by Part of Colonial Manor
Average noise levels for Colonial Manor residents, grouped by direction from the center of Colonial Manor. The highest population-weighted average is in eastern Colonial Manor; the lowest is in western Colonial Manor, where just 32% of residents live in blocks above the EPA's 55 dBA threshold, three-quarters of the share in the loudest section.
Eastern Colonial Manor
59.8 dBA · Loud
Normal conversation an arm’s length away
Central Colonial Manor
59.0 dBA · Loud
Normal conversation an arm’s length away
Northwestern Colonial Manor
53.7 dBA · Moderate-loud
Quiet office to normal conversation
Western Colonial Manor
53.7 dBA · Moderate-loud
Quiet office to normal conversation
To the human ear, noise in eastern Colonial Manor sounds about 53% louder than in western Colonial Manor, 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 74 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
74 dBA
City bus interior
165 ft
60 dBA
Normal conversation an arm’s length away
330 ft
51 dBA
Quiet office to normal conversation
660 ft
43 dBA
Quiet suburban street at night
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 2% of Colonial Manor sits under tree canopy (much lighter than most neighborhoods) and roughly 51% 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 Colonial Manor. 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
Sacramento International (SMF) sits northwest of Colonial Manor. 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 Colonial Manor, particularly to the southeast, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across Colonial Manor
The bar chart below shows the share of Colonial Manor residents in each noise band. About 54% of residents live below the EPA's 55 dBA threshold, and roughly 13% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Colonial Manor Compares
Colonial Manor sits at the louder end of the spectrum. Below: how Colonial Manor's average outdoor noise and share of residents above the EPA threshold compare with Colonial Heights, south-east-sacramento-sacramento-ca, Richmond Grove, and Campus Commons.
Average noise level (dBA)
Colonial Manor's 55.6 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 Colonial Manor because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 53.8% of Colonial Manor 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, 61.8% of Colonial Manor'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 Colonial Manor
- 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 2% of Colonial Manor is under tree cover (much lighter than most neighborhoods), and the dominant land cover is medium-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. Sacramento International's approach paths concentrate aviation noise to the northwest. Neighborhoods to the southeast of downtown show no measurable contribution from the airport.
