An index contour is typically indicated on a topographic map by a bold line, often labeled with its elevation in feet or meters. These lines are usually spaced at regular intervals, such as every 100 or 500 feet, and help to provide a clear reference for understanding the terrain's elevation changes. In addition to the index contours, intermediate contours may be shown as lighter, thinner lines between the index contours.
An Index Contour
indicated with different kind of contour numbers , which are showed in brown curved lines
A contour line that is bold and labeled is called an index contour line. These lines help to easily identify specific elevations on a topographic map.
The main topographic map rules include contour lines never crossing, contour lines close together represent steep terrain, contour lines spread out represent flat terrain, and elevation is indicated by the contour lines.
Contour lines are typically labeled with their elevation, indicating the vertical distance above a reference point, such as sea level. This allows users to easily determine the elevation profile of the land or terrain represented on a map.
it is a contour line of elevation Control index contour, or just index contour
An Index Contour
A contour interval is the vertical distance between contour lines on a topographic map, representing the change in elevation. An index contour is a heavier contour line that is labeled with the elevation value, to help users quickly identify key elevations on the map.
purples and greens are usally back and whites and grays are usally fronts
Index contour lines are thicker and usually have their elevation labeled. They help users quickly identify key elevations on a topographic map. In contrast, regular contour lines show the shape and elevation of the land but do not have specific labels.
An index contour is a thicker contour line that is labeled with the elevation of that contour. It usually appears every fifth contour line and helps to quickly identify elevation changes on a topographic map. Regular contour lines are thinner and connect points of equal elevation.
A thicker line that has numbers written on it showing the rising or decreasing elevation on a topographic map By Ash Every fifth contour line on a topographic map, usually thicker, used to label elevation.
It makes it easier to count the number of contour lines.
A contour interval is the vertical distance between two contour lines on a map, representing the change in elevation. An index contour is a thicker contour line labeled with the elevation of the line above sea level, typically every fifth contour line. It helps users quickly identify elevation values on a map.
The numbers of contour lines indicate altitude or elevation along that line.
The darker contour lines on map are called index contour lines. Numbers that indicate elevations are often written on these lines.
Two successive index contours would be 10 meters apart on a map with a contour interval of 5 meters. This means that each index contour line represents a change in elevation of 10 meters from the next adjacent line.