Google Topographic Maps Contour Lines. USGS Contours in Google Earth via KML network link. The source of this contour line that Google has integrated is the digital terrain model initially developed by NASA and continued by the USGS which is known as SRTM-90m.
If you want to have the contour maps as an individual layer eg. Google has just announced the addition of topographic contour lines to their Terrain view in Google Maps. The overlays are georeferenced and then packaged as downloadable KMZ files.
Topographic maps from google earth google earth interface figure displays the direction part of kml scientific diagram usgs topographic maps.
To make topographic maps easier to read every fifth contour line is an index contour. Between transition points of ten 30 40 50 etc add markers where to draw lines. Topographic maps provide a detailed represention of the natural and man-made features of the earths surface. To create overlays you can copy the code underneath the image below and save it as an svg file.
