Viele was author of a color city map, a "Sanitary & Topographical Map of the City and Island of New York," first published in 1865, and now called the "Viele Map", which shows his survey of the original streams, marshes and coastline of New York City, superimposed over the street grid. The map is still used by modern geotechnical engineers, structural engineers and planners to design the foundations of new buildings and structures in the city.New York Times: The City, "When There Was Water, Water Everywhere". Published: June 11, 2006
