Airport Noise Contours

THIS LAYER IS OWNED AND MAINTAINED BY LOS ANGELES COUNTY VIA THE LA COUNTY OPEN DATA PORTAL This layer defines the areas surrounding Los Angeles County airports that are subject to a range of decibel levels in a 24-hour weighted average noise level known as Community Noise Equivalent Level (CNEL). Please click here to see the Los Angeles County Airport Land Use Commission portion of our website for maps and documents. You can also review the following document from the State of California for further information: California Airport Land Use Planning Handbook. Some of the airports, such as LAX, and Burbank, have periodic updates of their noise contours. All airport layers can be seen and interacted with together in our A-NET GIS web mapping application - click here. UPDATE: 6/15/2020 - Long Beach Airport per Quarterly Noise Monitoring Report 1st Quarter 2020.本图层由洛杉矶县通过洛杉矶县开放数据门户（LA County Open Data Portal）所有并维护。本图层用于界定洛杉矶县各机场周边区域，该区域的噪声水平处于以24小时加权平均噪声为基准的分贝区间内，该噪声等级被称为社区等效噪声级（Community Noise Equivalent Level，CNEL）。请点击此处访问本网站下设的洛杉矶县机场土地使用委员会板块，以获取相关地图与文档资料。您亦可查阅加利福尼亚州发布的以下文档以获取更多详细信息：《加利福尼亚机场土地使用规划手册》（California Airport Land Use Planning Handbook）。部分机场（如洛杉矶国际机场（LAX）、伯班克机场）会定期更新其噪声等值线图层。所有机场图层均可在我们的A-NET GIS网络地图应用中统一查看并进行交互操作——请点击此处。更新记录：2020年6月15日——依据2020年第一季度季度噪声监测报告，更新长滩机场相关内容。