topographic map
See Also: planimetric map, TLM, topography
[cartography] A map that represents the vertical and horizontal positions of features, showing relief in some measurable form, such as contour lines, hypsometric tints, and relief shading.
Topographic map
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3D Topographic Maps Objective:
Preparation of the digital 3D topographic maps.
Topographic Map Search
The most common question we receive from map users is "Which topo map covers my area of interest?
USA Topographic Maps
Land-cover imagery for the world and detailed topographic maps for the Unites States at various scales.
Get instructions on how to use this map service.
Using a Topographic Map . . .
Tips for understanding contour lines.
When first looking at a topographic map, it may appear somewhat confusing and not very useful.
Topographic map
Topographic maps (Figure 2.4) show the shape of the earth’s surface by contour (elevation) lines.
Topographic Map
1. A map containing contours indicating lines of equal surface elevation (relief), often referred to as topo maps.
topographic map
A map depicting terrain relief showing ground elevation, usually through either contour lines or spot elevations. The map represents the horizontal and vertical positions of the features represented.
Topographic Map A map of land-source features including drainage lines, roads, land marks, and usually relief or elevation.
TOPOGRAPHIC MAPPING
8-63. GPS positioning, whether in the absolute or differential positioning mode, can provide heights (or height differences) of surveyed points.
Topographic maps are detailed two-dimensional representations of the natural and human world. These maps are used for a number of activities.
Topographic maps are usually part of a series of maps, but may be one-off/stand-alone maps.
Understanding Contours ...
topographic map - a reference tool, showing the outlines of selected natural and man-made features of the Earth ...
Topographic Maps and the Concept of Contours
The most widely used surface-shape representation is the topographic map.
Topographic map with isohypses of height
Contours are one of several common methods used to denote elevation or altitude and depth on maps. From these contours, a sense of the general terrain can be determined.
topographic map series, USGS
Stereographic
planar
conformal true direction* ...
topographic map
A topographic map is a map that represents elevations on it.
tributary
A tributary is a stream or river that flows into a larger river.
Topographic map at any scale which includes contour lines. (Compare with Planimetric Map.)
Conventional Map
Map produced and manitained by traditional [manual] cartographic methods.
Topographic maps are drawn in such a way as to show the natural landforms and man-made features (the topography) of a portion of the surface of the earth and are thus distinct from planimetric maps.
Topographic Mapping Initiatives (NR Can)
TMLS
Ministry of Lands, Survey and Natural Resources (Tonga); Terrestrial mobile LIDAR scanning ...
A topographic map with a close-up
An orthophoto map image of stands at Pack Forest
A 3-D visualization of Pack Forest's landform
Stand age classes from 1995 for Pack Forest
Culvert locations in part of Pack Forest.
The topographic map view provides section lines and other reference marks that might be clearer than on the aerial photos.
Free Topographic Maps
University of Oregon Library System State Directory ...
A familiar topographic map demonstrates a vocabulary of 2.5 dimensional symbols.
CMA (1980) Topographic Map 1:25000 Bedulluck (8727-IV-N). Bathurst, New South Wales: Central Mapping Authority.
CMA (1990) Topographic Map 1:25000 Murrumbateman Dyeline. Bathurst, New South Wales: Central Mapping Authority.
A contour or topographic map first is scanned, and the image is saved in a raster image file format such as TIFF or JPEG.
Beaman, W. M. Topographic Mapping. Washington, DC: U. S. Geol. Survey Bull. 788-E, p. 167, 1928.
Birdseye, C. H. Formulas and Tables for the Construction of Polyconic Projections. U. S. Geological Survey, Bulletin 809, 1929.
An Adobe file format readable with free software (Acrobat Reader) photogrammetry Use of aerial photographs to produce planimetric and topographic maps of the earth`s surface and of features of the built environment.
It may be applied to topographic maps, also termed "mother maps" that are used in the construction of other types of maps by the addition of particular data.
Topographic Map:
A map that shows the change in elevation over a geographic area through the use of contour lines. The contour lines trace points of equal elevation across the map. See also: contour line and contour map.
Topography: ...
The Bonne projection played a significant role in 19th century larger-scale topographic mapping using ellipsoidal formulas. This began with its adoption in France after efforts by Bonne in 1802.
It is important to realize that topographic maps are drawn and geodetic positions are defined with respect to a horizontal datum (also referred to as geodetic datum or reference datum).
5-minute topographic maps. From these maps, elevation is sampled every 30 m. Vertical accuracy varies from 7 m to 15 m. DEMs derived from the 7.5-minute topographic maps are available for about 50% of the U.S. as of 1993.
The most widespread use of photogrammetry is in the construction and revision of topographic maps. The US Geological Survey (USGS) relies on photogrammetric techniques to produce and update its topographic map series.
Topographic maps show the shape of land surface with contour lines; the actual shape of the land can be seen only in the mind's eye.
Once very popular for large-scale topographic maps, the "Bonne" pseudoconic projection has generally fallen in disuse, been usually replaced by transverse Mercator maps. Although named after the French R.
Topographic Map Symbols - Fundamentals of Topographic Maps from the USGS
USGS GIS Intro - Introduction to GIS from the USGS
USGS SDTS - Get up to speed with the SDTS data format with this material from the USGS ...
Grid data sets come from many sources: remote sensing devices, converted topographic maps, interpolated point data, conversion from vector features, and derived from other features (through distance, proximity, and density calculations, for instance).
Photogrammetry uses aerial photographs to produce planimetric and topographic maps of the earth's surface and of features of the built environment.
Figure 1e. USGS scanned, rectified topographic map called a digital raster graphic (DRG).
Figure 1f. USGS digital orthophoto quadrangle (DOQ).
Figure 2. USGS geologic map.
While a fixed value for water on a topographic map works in traditional mapping contexts it's insufficient in most analytical applications.
DRG (Digital Raster Graphics) - A scanned image of USGS topographic maps. The purpose of DTG is to provide a backdrop on which other digital data (e.g. vector data from DLG) can be overlaid.
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Navigation over land or water,
Producing topographic maps,
Planning and building highways, pipelines and other major engineering projects,
Mining and funneling operations, and
Building construction ...
Digital Vector products are representations of major topographic map features with attributed point, line and region/area data.
The Hungarian DTM was made by utilising the topographic maps of Hungary, and has the resolution of 500m × 500m on the plane of the Hungarian Unified Projection System, which corresponds to approximately 25" × 16".
Developed by CYRA Technologies, Bentley CloudWorx delivers immediate results, enabling you to easily visualize and work with point cloud data, create accurate as-builts and topographic maps and check proposed designs against existing site conditions ...
planimetric data - Data about features on the Earth surface that are represented only by their correct horizontal position. Distinguished from a topographic map by the omission of relief in a measurable form.
Mapping Agency Solution - provides essential tools for automating quality control and streamlining all stages of data and map production for creation of local, regional and national topographic map products.
Universal Transverse Mercator. This is a projection system based upon the Transverse Mercator projection. It is frequently used for the production of topographic maps and for georeferencing satellite images (Walker 1993).
VPF ...
A very useful resource for retrieving latitude and longitude (including minutes and seconds) for a specific place or point of interest (even libraries and parks) in the U.S. Also provides the name of the 7.5' USGS topographic map for that point.
Universal Transverse Mercator (UTM)
A nearly worldwide coordinate projection system using north and east distance measurements from reference point(s). UTM is the primary coordinate system used on U.S. Geological Survey topographic maps.
The sensor also has the capability to produce full scene stereo images which can be used to create topographic maps.
Examples are topographic maps, road maps, weather maps.
Map Projection: A method of representing the earth's three-dimensional surface as a flat two-dimensional surface.
 See also: Map, Information, Mapping, Geographic, Survey
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