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- 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.
www.usgs.gov/faqs/how-accurate-are-us-topo-maps-and-why-dont-they-have-accuracy-statementHow accurate are US Topo maps, and why don't they have an ...
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Are US Topo Maps accurate?
Are USGS maps accurate?
How are USGS topographic maps made?
Are GPS elevations based on a USGS map?
The orthoimage layer in US Topo maps is derived from images of the National Agriculture Imagery Program (NAIP). The production of these images is well controlled; they have an accuracy of 6 meters (~20 feet) or better.
- The National Map Viewer
A dynamic map showing 3DEP 1-meter DEM availability for the...
- The National Map
The geographic information available from The National Map...
- The National Map Viewer
- TNM Data Delivery Home Page.
- List of Datasets in The National Map.
- More TNM Applications & Tools.
- TNM Web Services List.
The geographic information available from The National Map includes boundaries, elevation, geographic names, hydrography, land cover, orthoimagery, structures, and transportation.
The U.S. Geological Survey hosts topoView, an interactive database of the survey’s topographic maps. The map is searchable by address, and clicking on any point on the map brings up topographic maps of the area dating back to 1879. Map results can be narrowed further using scale and date filters.
This resource is a comprehensive, nationwide listing of known high-accuracy topographic data, including lidar and IfSAR, and bathymetric data, including NOAA hydrographic surveys, multibeam data, and bathymetric lidar.
We've added the US Topo series to topoView, giving users access to over 3 million downloadable files from 2009 to the present day. The US Topo series is a latest generation of topographic maps modeled on the USGS historical 7.5-minute series (created from 1947-1992).
Jul 18, 2024 · A nationwide listing of known publicly available high-accuracy topographic and bathymetric source elevation data for the United States and its territories. The inventory provides a single resource for information about all known completed and in-progress broad-area public domain elevation data.