Noise Levels in Riverdale Park, MD | Find Quiet Neighborhoods With Our Sound Map
58 dBA
Average noise across Riverdale Park
Normal conversation an arm’s length away
2,963
Residents above the EPA 55 dBA threshold
52% of Riverdale Park residents
70 dBA
Loudest residential point
Highway traffic 50 ft away
This map shows modeled outdoor noise across Riverdale Park 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 2,963 Riverdale Park residents, or 51.6%, live above that level. By land area, 59.4% of Riverdale Park is above 55 dBA.
Average noise levels for Riverdale Park residents, grouped by direction from the center of Riverdale Park. Western Riverdale Park carries the highest population-weighted average; Northern Riverdale Park carries the lowest. Just 56% of residents in Northern Riverdale Park live in blocks above the EPA's 55 dBA threshold, three-quarters of the share in Western Riverdale Park.
Central Riverdale Park
58.7 dBA · Loud
Normal conversation an arm’s length away
44% of people above 55 dBA
QuietLoud
Eastern Riverdale Park
57.5 dBA · Moderate-loud
Normal conversation an arm’s length away
49% of people above 55 dBA
QuietLoud
Northern Riverdale Park
57.1 dBA · Moderate-loud
Normal conversation an arm’s length away
56% of people above 55 dBA
QuietLoud
Southern Riverdale Park
57.2 dBA · Moderate-loud
Normal conversation an arm’s length away
24% of people above 55 dBA
QuietLoud
Western Riverdale Park
59.3 dBA · Loud
Normal conversation an arm’s length away
76% of people above 55 dBA
QuietLoud
Western Riverdale Park sounds about 16% louder than Northern Riverdale Park to the human ear, a 2.2 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 Gladys Noon Spellman Pkwy do you need to be?
Gladys Noon Spellman Pkwy produces an estimated 59 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
59 dBA
Normal conversation an arm’s length away
165 ft
45 dBA
Quiet suburban street at night
330 ft
37 dBA
Soft rainfall
660 ft
35 dBA
Soft rainfall
¼ mile
35 dBA
Soft rainfall
½ mile
35 dBA
Soft rainfall
Calculated from the model's calibrated attenuation formula. About 22% of Riverdale Park sits under tree canopy (lighter than most cities) and roughly 54% 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 Riverdale Park. 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
Ronald Reagan Washington Ntl (DCA) sits southwest of Riverdale Park. The U.S. Department of Transportation measures aviation noise around this airport directly, 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 45 dBA on the map's Overall layer. Blocks on the opposite side of Riverdale Park, 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 Riverdale Park
The bar chart below shows the share of Riverdale Park residents in each noise band. About 17% of residents live below the EPA's 55 dBA threshold, and roughly 48% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Riverdale Park Compares
Riverdale Park sits the highest among the peer group. Below: how Riverdale Park's average outdoor noise and share of residents above the EPA threshold compare with Cheverly, Calverton, Bladensburg, and Mount Rainier.
Average noise level (dBA)
Riverdale Park's 58.3 dBA pop-weighted average is the highest among the peer group. Maryland as a whole averages 52.3 dBA and the U.S. averages 52.0 dBA. Both are lower than Riverdale Park because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 51.6% of Riverdale Park 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, 59.4% of Riverdale Park's footprint sits above 55 dBA, against a Maryland average of 32.9% and a national average of 28.1%.
What This Means if You're Moving to Riverdale Park
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 Gladys Noon Spellman Pkwy 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 22% of Riverdale Park is under tree cover (lighter than most cities), 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. Ronald Reagan Washington Ntl's approach paths concentrate aviation noise to the southwest. Neighborhoods to the northeast of downtown show no measurable contribution from the airport.
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.
