Earth Science » Sea Level http://www.safeschoolciap.org Sat, 10 Dec 2011 06:22:32 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 The Basics of Reading Elevation Data http://www.safeschoolciap.org/the-basics-of-reading-elevation-data http://www.safeschoolciap.org/the-basics-of-reading-elevation-data#comments Thu, 24 Dec 2009 08:13:58 +0000 Admin http://www.safeschoolciap.org/?p=136 It is relatively easy to read elevation data, as long as you become familiar with a few of the key terms and rules. Highway construction

Elevation: In terms of land, this refers to the distance in relation to sea level. Contour lines: These invisible lines connect points of equal elevation to each other. They are essential to understanding elevation data. They show bands of elevation, as well as spot elevation on a map.

Hachures: Hachures are marks pointing downwards and are found on contour lines. These marks indicate a depression in elevation. The first rule is sometimes called the rule of V’s.

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