NYC open data repository, distributing geospatial and tabular data. Download links to datasets are available by clicking on the red About button on the far right of the data view and scrolling down to the Attachments section.
INFRASTRUCTURE
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GIS datasets and CAD files representing assessment parcels, streets, contours, and topographic features. Also includes orthorectified aerial image of entire city.
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Interactive mapping of infrastructure, Population and Health. Includes historical road network data, sewers, industrial expanse, etc. For online version see http://mercator.geog.utoronto.ca/georia/mapping.htm
Shorelines for 1881, 1890, 1906, and… Read more.