This document details the vegetation classification and mapping which was completed for Saugus Iron Works National Historic Site, It includes a current digital geospatial vegetation database for the park. Six vegetation associations occurred within the park, and these were identified and described in detail. The associations were Northeastern Modified Successional Forest, Reed Canarygrass Eastern Marsh, Reed-grass Tidal Marsh, Cattail Brackish Tidal Marsh, Skunk-cabbage - Orange Jewelweed Seep, and Central Atlantic Freshwater Subtidal River Bed.