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Aug 28, 2023 · The spacing between contour lines reflects the steepness of the terrain. Closer contour lines indicate steeper slopes, while widely spaced contour lines indicate more gradual slopes. Contour Interval: The contour interval is the difference in elevation between two adjacent contour lines. A smaller contour interval provides more detailed ...
Oct 2, 2019 · The contour interval for the contour lines will be 3 m here. The interval in the contour line generally depends upon (i) The nature of the ground surface, (ii) The scale of the map prepared, and (iii) the purpose of the survey. Horizontal Equivalent. The horizontal equivalent is the horizontal distance between any two continuous contour lines.
Horizontal Equivalent. 1. It is based on vertical levels. Represents horizontal distance. 2. No measurement or scaling is required since the contour levels are indicated on the contour lines. The distance must be measured on the map and converted to actual distance by multiplying with the scale of the map. 3. In a given map the contour interval ...
A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes. [4] The contour interval of a contour map is the difference in elevation between successive contour lines. [5] The gradient of the function is always perpendicular to the contour ...
Aug 31, 2019 · If the topographic map in Figure 3.6 has a fractional scale of 1:12,000 then 1 inch is equal to 12,000 inches or 1000ft; this 1inch = 1000ft equivalency is for the horizontal scale. When we hold a ruler to the y-axis of the topographic profile in Figure 3.6, we see that 0.5 inches = 50ft, which means 1 inch = 100ft on the vertical scale.
Nov 14, 2024 · 5.5 Contour Lines and Intervals. A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line. If the numbers associated with specific ...
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1. Contour lines do not cross each other, divide or split. 2. Closely spaced contour lines represent steep slopes, conversely, contour lines that are spaced far apart represent gentle slopes. 3. Contour lines trend up valleys and form a "V" or a "U" where they cross a stream. On most topographic maps, index contour lines are generally darker ...
