Prepared and published by the National Imagery and Mapping Agency. Depths shown by isolines and soundings. "From Brazilian charts to 1996." "Copyright 1997 by the United States Government. No copyright claimed under Title 17 U.S.C." "Soundings in meters." Includes source diagram. Map No. 24320. This map is part of a collection of scanned and georeferenced nautical charts produced by the National Geospatial-Intelligence Agency (NGA). United States. National Imagery and Mapping Agency. (1997). Brazil--north coast, Amazon Estuary, Ilha de Maracá to Ilha do Machadinho (Raster Image). LandInfo. Available at: https://purl.stanford.edu/sz265dm9875 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.