Noise Levels in North Great River, NY | Find Quiet Neighborhoods With Our Sound Map
54 dBA
Average noise across North Great River
Quiet office to normal conversation
484
Residents above the EPA 55 dBA threshold
13% of North Great River residents
79 dBA
Loudest residential point
City bus interior
This map shows modeled outdoor noise across North Great River 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 484 North Great River residents, or 12.8%, live above that level. By land area, 20.2% of North Great River is above 55 dBA.
79.8% below 55 dBA
20.2% above 55 dBA
See how noise in North Great River compares to similar-sized cities.
Noise by Part of North Great River
Average noise levels for North Great River residents, grouped by direction from the center of North Great River. Southern North Great River carries the highest population-weighted average; Western North Great River carries the lowest. Just 11% of residents in Western North Great River live in blocks above the EPA's 55 dBA threshold, three-quarters of the share in Southern North Great River.
Central North Great River
54.4 dBA · Moderate-loud
Quiet office to normal conversation
Eastern North Great River
55.5 dBA · Moderate-loud
Quiet office to normal conversation
Northern North Great River
51.4 dBA · Moderate
Quiet office to normal conversation
Southern North Great River
59.5 dBA · Loud
Normal conversation an arm’s length away
Western North Great River
51.2 dBA · Moderate
Quiet office to normal conversation
Southern North Great River sounds about 78% louder than Western North Great River to the human ear, a 8.3 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 79 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
79 dBA
City bus interior
165 ft
65 dBA
Busy restaurant
330 ft
57 dBA
Normal conversation an arm’s length away
660 ft
49 dBA
Quiet office
¼ mile
41 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 54% of North Great River sits under tree canopy (heavier than most cities) and roughly 16% 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 North Great River. 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
Long Island Macarthur (ISP) sits northeast of North Great River. 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 55 dBA on the map's Overall layer. Blocks on the opposite side of North Great River, particularly to the southwest, show no measurable aviation contribution. Use the Aviation toggle on the map above to isolate the airport's footprint.
How Noise Is Distributed Across North Great River
The bar chart below shows the share of North Great River residents in each noise band. About 55% of residents live below the EPA's 55 dBA threshold, and roughly 19% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How North Great River Compares
North Great River sits at the quieter end of the spectrum. Below: how North Great River's average outdoor noise and share of residents above the EPA threshold compare with Islandia, West Sayville, Blue Point, and Brightwaters.
Average noise level (dBA)
North Great River's 54.3 dBA pop-weighted average is at the quieter end of the spectrum. New York as a whole averages 55.4 dBA and the U.S. averages 52.0 dBA. Both are lower than North Great River because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 12.8% of North Great River residents live in blocks where outdoor levels exceed the EPA's 55 dBA threshold. That's fewer than any of its peer group. Measured by land area instead, 20.2% of North Great River's footprint sits above 55 dBA, against a New York average of 30.9% and a national average of 28.1%.
What This Means if You're Moving to North Great River
- 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 54% of North Great River is under tree cover (heavier than most cities), and the dominant land cover is low-density developed open space. 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. Long Island Macarthur's approach paths concentrate aviation noise to the northeast. Neighborhoods to the southwest of downtown show no measurable contribution from the airport.
