Bottom characteristic map of the approaches to New York Harbor by "United States Hydrographical Office" as published in Matthew Fontaine Maury's Wind

Bottom characteristic map of the approaches to New York Harbor by “United States Hydrographical Office” as published in Matthew Fontaine Maury’s Wind and Current Charts for 1858. Data from United States Coast Survey. Note there is no expression of Hudson Canyon below the continental shelf break although the channel of the Ice Age Hudson River is clearly shown.

Photo Category: Exploration - Maps