Big Lake - Visibility (BIG) Air Monitoring Station | Linn County, Oregon | USA

Big Lake - Visibility (BIG) is an air monitoring station located in Linn County, Oregon, United States. The station is operated by the Oregon Department of Environmental Quality and is part of the national air quality monitoring network. It focuses on visibility measurements, which are critical for assessing haze and air clarity in the region. The station operates under the regulatory framework of the US EPA Air Quality System (AQS), which sets standards for criteria pollutants and visibility. While specific parameters measured are not detailed, visibility monitoring typically involves measuring light extinction and particulate matter. The station's siting in a rural area near Big Lake provides representative data for regional air quality assessments. This monitoring station contributes to understanding air quality trends in the Cascade Range region, supporting efforts to protect visibility in scenic areas. The data collected helps inform regulatory decisions and public health advisories. The station's long-term operation ensures continuity in tracking environmental changes.

The Big Lake monitoring station is situated in a forested area of the Oregon Cascades, where air quality is influenced by wildfires, seasonal inversions, and long-range transport of pollutants. Visibility monitoring is key to assessing regional haze and compliance with the Regional Haze Rule. The station's data supports the Interagency Monitoring of Protected Visual Environments (IMPROVE) network, which tracks visibility in Class I areas.