The Contours ended in 1968.
The Contours was created in 1959.
The lines on a topographical map show the contours of the land.
A topographic map would show elevations and contours.
Contours can intersect if you have an overhang. If there is a vertical drop, the contours will touch but not cross one another.
Index contours can be identified by every 5th contour line and also because its darker and heavier
The Contours-1962
The contours of the water table lines are the same as the contours of other topographical lines. The only indication of water tables might be elevation lines but they are not unique to water tables.
answ2. Topographic contours of a large overhang could conceptually overlap, but convention merely prints them as congruent.
Contours and spot heights.
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Contour tillage is when sloping fields are cultivated, there is a danger of erosion. Farmers know about this, and they try to prevent it by contours. This means plouging along the contours.