Contour Lines vs. Reality. As reliable as a topographic map might be, it can’t reveal every detail of the terrain. A 20-foot-high cliff or a 30-foot deep ditch could exist between two 40-foot ...

The contour lines and elevation markings in Google Maps can be hard to understand. If you're trying to get a sense of how steep the incline of a trail is before hiking it, the 3D view can help.

And, see an example of overlay USGS topo maps and a GPS track to illustrate a hike, ... How to plot my X,Y,Z co ordinates in new contour line in google maps. Haider says. March 18, ...

A topo map is an eagle’s-eye illustration of the land, with differences in elevation shown via contour lines. (Typically, every fifth line is darker and marked with the elevation.) ...

Contour lines join areas of equal height and are shown in orange on an Ordnance Survey (OS) map. The number written on the contour line shows the height above sea level in metres.

You can find a topographic map of your land from the United States Geological Survey (USGS). The lines on these maps are at set elevations, and closer lines mean steeper slopes. Planting parallel to ...