Noise Levels in Holgate Avenue Historic District, Defiance, OH | Find Quiet Neighborhoods With Our Sound Map
56 dBA
Average noise across Holgate Avenue Historic District
Quiet office to normal conversation
1,276
Residents above the EPA 55 dBA threshold
56% of Holgate Avenue Historic District residents
104 dBA
Loudest residential point
Power saw
This map shows modeled outdoor noise across Holgate Avenue Historic District 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 1,276 Holgate Avenue Historic District residents, or 56.1%, live above that level. By land area, 59.4% of Holgate Avenue Historic District is above 55 dBA.
Average noise levels for Holgate Avenue Historic District residents, grouped by direction from the center of Holgate Avenue Historic District. Western Holgate Avenue Historic District carries the highest population-weighted average; Northern Holgate Avenue Historic District carries the lowest. Just 36% of residents in Northern Holgate Avenue Historic District live in blocks above the EPA's 55 dBA threshold, about half the share in Western Holgate Avenue Historic District.
Central Holgate Avenue Historic District
56.3 dBA · Moderate-loud
Normal conversation an arm’s length away
63% of people above 55 dBA
QuietLoud
Eastern Holgate Avenue Historic District
57.1 dBA · Moderate-loud
Normal conversation an arm’s length away
74% of people above 55 dBA
QuietLoud
Northern Holgate Avenue Historic District
51.4 dBA · Moderate
Quiet office to normal conversation
36% of people above 55 dBA
QuietLoud
Southern Holgate Avenue Historic District
54.8 dBA · Moderate-loud
Quiet office to normal conversation
49% of people above 55 dBA
QuietLoud
Western Holgate Avenue Historic District
67.6 dBA · Loud
Highway traffic 50 ft away
84% of people above 55 dBA
QuietLoud
Western Holgate Avenue Historic District sounds about 207% louder than Northern Holgate Avenue Historic District to the human ear, a 16.2 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 Quality Dr do you need to be?
Quality Dr produces an estimated 55 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
55 dBA
Quiet office to normal conversation
165 ft
41 dBA
Quiet suburban street at night
330 ft
35 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 14% of Holgate Avenue Historic District sits under tree canopy (about average for neighborhoods) and roughly 45% 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 Holgate Avenue Historic District. 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 Holgate Avenue Historic District
The bar chart below shows the share of Holgate Avenue Historic District residents in each noise band. About 44% of residents live below the EPA's 55 dBA threshold, and roughly 12% live in blocks above 60 dBA. Long-term exposure in that range is linked to elevated stress hormones and cardiovascular risk.
How Holgate Avenue Historic District Compares
Holgate Avenue Historic District sits the highest among the peer group. Below: how Holgate Avenue Historic District's average outdoor noise and share of residents above the EPA threshold compare with Bryan Downtown Historic District, fountain-city-historic-district-bryan-oh, downtown-bluffton-bluffton-oh, and downtown-bowling-green-bowling-green-oh.
Average noise level (dBA)
Holgate Avenue Historic District's 55.8 dBA pop-weighted average is the highest among the peer group. Ohio as a whole averages 51.1 dBA and the U.S. averages 52.0 dBA. Both are lower than Holgate Avenue Historic District because most of either area is rural land away from major roads.
Share of residents above 55 dBA
About 56.1% of Holgate Avenue Historic District 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, 59.4% of Holgate Avenue Historic District's footprint sits above 55 dBA, against a Ohio average of 26.4% and a national average of 28.1%.
What This Means if You're Moving to Holgate Avenue Historic District
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 Quality Dr 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 14% of Holgate Avenue Historic District is under tree cover (about average for 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.
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.
