Let us know how we can continue to improve access to the USGS topographic map collection. Click the play button below to see some of the new features in action.
Thanks for using topoView! Build — 2. This mapping was done at different levels of detail, in order to support various land use and other purposes. As the years passed, the USGS produced new map versions of each area. The most current map of each area is available from The National Map. TopoView shows the many and varied older maps of each area, and so is especially useful for historical purposes—for example, the names of some natural and cultural features have changed over time, and the historical names can be found on many of these topographic maps.
Skip to main content. Search Search. Mapping, Remote Sensing, and Geospatial Data. Most applications have an option for toggling on map indices showing an outline of all the maps, though you must zoom in to see the lines: Map Locator on the USGS Store -- Search and download free digital maps in GeoPDF format or order paper maps.
Apply Filter. TopoView - Click on any of the round map scale indicators on the right side of the map. The National Map Viewer - Click on the What is a topographic map? The distinctive characteristic of a topographic map is the use of elevation contour lines to show the shape of the Earth's surface. Elevation contours are imaginary lines connecting points having the same elevation on the surface of the land above or below a reference surface, which is usually mean sea level.
Contours make it possible to show the How do I get a full-scale plot of a ,scale 7. There are three ways to get full-scale plots of USGS topographic quadrangle maps, including both Historical Topographic maps produced and US Topo maps produced present. Download the GeoPDF map file and send it to a local printing How current are US Topo maps? US Topo maps are updated on a three-year production cycle maps covering one third of the country are updated each year.
The US Topo production schedule follows the U. This does not include US Topos for Alaska, which are on a different schedule. Are USGS topographic maps copyrighted? All topographic maps produced by the U. Geological Survey USGS are in the public domain and are not copyrighted except for the following three cases that apply only to US Topo maps produced present : Most maps in the period contain commercially licensed road data see note below.
Orthoimages in Alaska are commercially licensed How accurate are US Topo maps, and why don't they have an accuracy statement? US Topo maps are as accurate as the data sources used to make them, but because these sources are many and varied, it is not possible to make a single simple statement that the map as a whole meets a particular level of accuracy. US Topo maps, therefore, do not have a traditional accuracy statement in the map collar. Accuracy information for Can I still get the older topographic maps?
Topographic maps originally published as paper documents between have been scanned and published as the USGS Historical Topographic Map Collection. Historically, USGS topographic maps were made using data from primary sources including direct field observations.
Those maps were compiled, drawn, and edited by hand. By today's standards, those traditional methods are very expensive and time-consuming, and the USGS no longer has funding to make maps that way. A new USGS topographic map series Will eat your battery and might not work so well under thick bush cover. But if you want that buy a proper gps for the back country. Amazing app for 5 bucks. Best money I've spent in this shop.
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