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Topographic Maps and Countours

Topographic Maps and Countours Academic Resource Center Topography: The relief features or configuration of an area. *How do we measure it? Contour Lines Contour lines, or isohypses, connect points of equal elevation. Consider a receding water level. Contour Map Characteristics Index Contours are used to label the elevation of the their associated points. Bolded to facilitate reading of the map. Often occur in intervals of five contour lines. Contour Map Characteristics Contour Interval: Horizontal distance between two contours Close together: Steep slope Far apart: Gradual slope Gradual Slope Steep Slope Contour Map Characteristics Valleys: Lines form a V pattern along valleys Vs point upstream; indicating the direction of the stream flow.

Topographic Profiles •Generating profiles: •Draw a line between the two points bounding the desired profile area. •Place a folded sheet of paper along the line.

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