but by now you should be ready to prepare a first class contour map from the plotted spot elevation data. And finally, something a bit more challenging. At the beginning of the war some of the only maps. O 80 OG og pong to OB0 GO 096 o 0 % 11 015 100Ĭhapter 6 Topographic Maps 111 5. The contour interval on a topographic map is the vertical distance between one contour line and the next.
#WHATS A CONTOUR INTERVAL FREE#
010 200 200 20 o 19 Ooo 22 50 Oas 40 50 22 25 025 30 1o. : the vertical distance between the elevations represented by adjacent contour lines on a map Love words You must there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary. Before you begin, remember to survey the data points and decide on the best contour interval. The following two maps (prepared by Hayden Chasteen (Tarrant County Col- lege), and used with permission will allow you to gain further skill in prepar- ing contour maps from raw data. Construct the vertical profile between A-A'. Contour the map using the spot elevations. Use the map and grid below to construct a topographic profile. What is counter interval The vertical separation or elevation difference between contour lines is known as a contour interval. because 5 lines are between two of the numbers that are 500 ft apart which implies 500 divided by 5 that is 100. Read contour intervals with help from an MIT Masters. The counter interval of the map is 100 ft. Use a contour inter- val of 20 feet and interpolate to find the contour lines and construct an appro- priate topographic map. Watch More: Reading contour intervals always requires you to keep a few very specific things in mind. Use the surveyed spot elevation points in the maps below.
What is the approximate total relief in the area? X483 FIGURE 1HĠ8 Chapter 6 Topographic Maps 2. What contour interval is being used here? (Figure 1.H) Label the index contour line. Using the benchmark and a contour interval of 10 feet, label the contour lines. (Figure 1.F) What topographic feature is shown at point X? What topographic feature is shown at point Y ? FIGURE 1.FĬhapter 6 Topographic Maps G.
In this model, the wavy lines are streams. What type of contour feature is shown here? (Figure 1.B) Why are the lines shown closer at one edge? Which direction is uphill? What is the contour interval? 100 X58 FIGURE 1.Bį. (Figure 1.A) What do the extra heavy lines indicate? What are the thinner lines? The index contour interval is The ordinary contour interval is FIGURE 1.A B. Using a contour interval (C.I.) of 20 feet, label each contour. Every sixth contour line has an index contour, which is a.
Using the rules of contour mapping, determine the answers for the examples below. The vertical distance or difference in elevation between contour lines is known as a contour interval. In areas with less accurate or less detailed elevation data, a larger contour interval may be necessary.1. Available data: The quality and availability of elevation data can also affect the choice of contour interval.For example, a map designed for hiking or mountaineering may require a smaller contour interval to provide more detail on the terrain’s slope and relief, while a map designed for general reference may use a larger contour interval to reduce clutter and simplify the map. Purpose of the map: The level of detail required for the map’s purpose can also affect the choice of contour interval.Conversely, in areas with gentle slopes, a larger contour interval can be used. Steepness of the terrain: In areas with steep terrain, a smaller contour interval is necessary to accurately represent the changes in elevation and slope.Scale of the map: As mentioned, maps with smaller scales require larger contour intervals to avoid overcrowding of contour lines and clutter on the map.
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