CL Deposition and Data


Access the relevant website and a step-by-step guide for using the website.

National Critical Loads Database (NCLD)

Lichens & Air Quality Database (USFS)

NADP TDep (Total Deposition) Maps

CMAQ

CASTNET


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(This website cannot be embedded)

Step-by-step instructions

    1. Go to https://www.epa.gov/castnet
    2. Go to Download data and select – “CASTNET Data” – https://www.epa.gov/castnet/download-data
    3. On this page you can download “Pre-package data files” on this FTP site – https://gaftp.epa.gov/castnet/CASTNET_Outgoing/data/
    4. Or Use the download tool to select data and download the selections:
    a. Select by Date, EPA Regions, state-county, Agency, SiteID, and Active/Incative
    b. Download data:
    i. Filter Pack Concentrations
    ii. Meteorological data
    iii. Ozone
    iv. Trace gas
    v. Total deposition – Annual (at the site)
    5. Click Export Table for the data