Table of Contents
How do you find the elevation of a contour line?
You can figure out the elevation of any point by finding the nearest labeled line, counting the number of lines above or below it, multiplying by the contour interval, and adding or subtracting the result from the nearest marked contour line. The more closely spaced the contour lines, the steeper the slope.
What is a Hachure mark on a topographic map?
Contour lines that show a depression, crater, or sinkhole on a map are represented by dashed lines (hachure marks) on the inside of a contour line. The elevation of the first depression contour is the same as the nearest regular contour line.
What is the elevation of the intermediate contour line?
Contour lines (thinner lines) between index contours are called intermediate contour lines. In the map shown below, the elevation difference between index lines is 100 meters. The elevation difference or vertical distance between two adjacent contour lines would be 20 meters (100 : 5 = 20).
How do you find elevation?
How to find elevation on Google Maps in a web browser
- Type your location into the search bar on the left side.
- Click the “Menu” bar, which is next to the search bar and is represented by the three horizontal lines in the top-left.
- Hit “Terrain” to show topography and elevation.
What do Hachure lines or Hachure marks indicate on a contour map?
instead short dashes called hachures are used to indicate depression. Hachures are drawn perpendicular to the contour line that loops around a depression.
What do Hachure lines represent on a topographic map?
As the use of shading became systematized during the eighteenth and nineteenth centuries, French cartographers referred to these shading lines as “hachures.” Hachures represent the slope of the land—the more gentle the slope, the fewer the lines—and the absence of line indicates flat terrain.
What are Hachure marks used for?
Hachures (/ˈhæʃʊərz/) are an older mode of representing relief. They show orientation of slope, and by their thickness and overall density they provide a general sense of steepness.