A topo map of New York, USA Data: USGS GMTED2010, Hydro1k, HydroSHEDS HydroLAKES STL was originally generated from a 500m resolution DEM and decimated with a 0.1 ratio to make it easier to transfer online. As a result, the smallest detail on the map in real life is approximately 5000 m horizontally and 500 m vertically. 1:2500000 horizontal scale 1:500000 vertical scale USA Contiguous Lambert Conformal Conic 7.5 arc second GMTED downscaled to 500m using cubic Streams and lakes lowered by 0.5 mm