A topographic map is a detailed and accurate illustration of man-made and natural features on the ground such as roads, railways, power transmission lines, contours, elevations, rivers, lakes and geographical names. The topographic map is a two-dimensional representation of the Earth’s three-dimensional landscape.
Topographic maps are a detailed record of a land area, giving geographic positions and elevations for both natural and man-made features. They show the shape of the land the mountains, valleys, and plains by means of brown contour lines (lines of equal elevation above sea level).
Whenever you’re in a remote or unfamiliar area, a topographic map and compass are a must. Topographic maps are created from aerial photographs and reveal the contours of the land, including hills, ridges, and valleys, as well as lakes, rivers, creeks, trails, and roads. Contour lines show the elevation of the ground.
A topographical map is one that shows the physical features of the land. Besides just showing landforms such as mountains and rivers, the map also shows the elevation changes of the land. Elevation is shown using contour lines. Contour lines next to each other will represent different elevations.
Slope and topography describe the shape and relief of the land. Topography is a measurement of elevation, and slope is the percent change in that elevation over a certain distance. Topography may be measured with lines that connect points representing the same elevation; these are called topographic contours.
Topographic maps have many multiple uses in the present day: any type of geographic planning or large-scale architecture; earth sciences and many other geographic disciplines; mining and other earth-based endeavours; civil engineering and recreational uses such as hiking and orienteering.
Who uses topography maps? Hikers, campers, snow skiers, city and county planners, the Fish and Wildlife Service, Forest Service, miners, loggers, highway planners and construction workers, travelers, surveyors, geologists, engineers, and scientists are just a few of the people who use topographic maps.
One side of a contour line is uphill and one is downhill. Contour lines close to form a circle (or run off the side of the map ). The area inside the circle is almost always higher than the contour line. Contour lines are drawn close together on steep ground and farther apart on flat ground.
Topographic Map. shows the surface features, or topography of Earth or a certain area.
The production of these images is well controlled; they have an accuracy of 6 meters (~20 feet) or better. The match between US Topo vector layers and the orthoimage layer is generally very good, evidence that the maps meet traditional accuracy standards for most feature classes in most areas.
Uses – Topographic maps have multiple uses in the present day: any type of geographic planning or large-scale architecture; earth sciences and many other geographic disciplines; mining and other earth-based endeavours (such as planning and constructing ponds); and recreational uses such as hiking or, in particular,
Topographic Map Legend and Symbols Brown lines – contours ( note that intervals vary) Black lines – roads, railroads, trails, and boundaries. Red lines – survey lines (township, range, and section lines) Blue areas – streams and solid is for larger bodies of water. Green areas – vegetation, typically trees or dense foliage.
Topography is defined as the formations on the crust of the Earth, including mountains, valleys, and canyons. The presence of mountains can contribute to an area, such as a desert, getting little rainfall. Mountains cause hot air to cool, which means less water can be held in the air.
Topographic Mapping Elements for Digital Map Products contour lines. contour related text. spot elevations. spot elevation related text.
Topography Types Karst Topography. Karst topography describes the distinct landscape that is made when underlying rocks dissolve or change shape. Mountain Topography. Topographical maps show landforms such as hills and mountains. Vegetation, Elevation and Glaciers.