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Nahant SWIM, Inc. - MWRA SEWAGE PLUME
(Updated November, 2008)

The MWRA Sewage Plume (Key for Below) Brown: Initial Dilution Zone (Dark) Plume: 1 Week of Dispersion (Light) Green: Tidal Reach: 1 Tidal Cycle Blue: 120 FT Contour (Light) 150 FT Contour (Medium) 180 FT Contour (Dark) The MWRA Sewage Plume Diagram Courtesy of Kevin Jangaard