What the ground does, drawn as lines of equal height. Contours, spot elevations, a benchmark and a drainage swale — and why the lines bunch together where the hill is steep.
What this sheet shows you
How to read a contour: every point on one line is the same height
Why contours crowd on steep ground and spread out on flat ground
The difference between an index contour and an intermediate one
Why a benchmark and a stated vertical datum come before any elevation
That a topographic survey makes no boundary determination at all
This is a teaching drawing of a fictional parcel. The licence number is blank
and the seal reads NO. 00000, so nothing here is a recordable
document or a surveyor's certification.