Topographical Atlas of the City of New York showing original water courses and made land (underneath the city grid) by Egbert L.Viele, 1874.
On the map, Minetta Stream runs under Washington Square. Uptown, near First Avenue and 103rd Street, water pools and collects in a large pond. A creek zigzags under the intersection of Broadway and 25th Street.
The map provides information Manhattan builders find indispensable: where former underground streams are; where soil quality might be poor because of erosion; where the island’s original shoreline ends and landfill begins
It is still being used today by many of the city’s structural engineers.
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