Overview
Coweeta is an air monitoring station in Otto, North Carolina, part of the CASTNET network. It provides long-term data on air quality and atmospheric deposition in the southern Appalachian region.
Coweeta is an air monitoring station located at the USDA Southern Research Station's Coweeta Hydrologic Laboratory near Otto, North Carolina. It operates as part of the Clean Air Status and Trends Network (CASTNET), a national network that measures ambient air quality and atmospheric deposition to assess the effectiveness of air pollution control programs. The station is situated in a rural, forested area of Macon County, providing background air quality data representative of the southeastern United States. The station is operated by Mactec, Inc. under the reporting agency for CASTNET. It collects data on criteria pollutants, including ozone, sulfur dioxide, and nitrogen oxides, as well as meteorological parameters and atmospheric deposition chemistry. CASTNET stations follow standardized EPA protocols for siting, sampling, and quality assurance, ensuring data comparability across the network. The station's last reported sample date was December 24, 2024, indicating ongoing operations. Coweeta's location within the Coweeta Hydrologic Laboratory, a long-term ecological research site, enhances its value for studying interactions between air quality, forest health, and watershed processes. Data from this station support regional air quality assessments, ecosystem impact studies, and regulatory compliance under the Clean Air Act. The station contributes to a broader understanding of atmospheric transport and deposition in the Appalachian region.
Environmental context
The Coweeta station monitors air quality in the southern Appalachian Mountains, an ecologically sensitive region with diverse forests and high rainfall. The area is downwind of major industrial and urban sources, making it important for tracking regional transport of pollutants. CASTNET's focus on atmospheric deposition helps assess impacts on forest ecosystems, including acidification and nutrient cycling. The station's rural siting provides baseline data for evaluating regulatory effectiveness under the EPA's Air Quality System.
Frequently asked questions
The Coweeta air monitoring station is located at the USDA Southern Research Station's Coweeta Hydrologic Laboratory in Otto, North Carolina, USA.
Coweeta is part of the Clean Air Status and Trends Network (CASTNET), which monitors ambient air quality and atmospheric deposition across the United States.
The station measures criteria pollutants such as ozone, sulfur dioxide, and nitrogen oxides, along with meteorological parameters and atmospheric deposition chemistry.
CASTNET provides long-term data used by the EPA to assess the effectiveness of air pollution control programs under the Clean Air Act, including the Acid Rain Program and Regional Haze Rule.
Its location in a rural, forested area of the southern Appalachians provides background air quality data critical for understanding regional pollutant transport and ecosystem impacts.
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