A data tip from NGS – Not exactly free, however, this is a fine resource for viewing data and imagery… National Geographic DataDoors portal (www.natgeodatadoors.com), customers can select the exact area of coverage they want and order National Geographic’s TOPO! maps and i-cubed’s USA Nationwide Prime Imagery on CD-ROM or removable hard drives, or as a download. National Geographic Maps has scanned over 58,000 United States Geological Survey (USGS) quadrangles, color corrected them to create a consistent look and created a seamless map that spans all 50 U.S. states. The TOPO! map data is available at 1:24,000 scale in the continental United States and Hawaii, 1:63,360 scale in Alaska, and 1:100,000 scale in the continental United States. Digital Elevation Model (DEM) data is also available to help visualize vertical terrain and conduct spatial analysis and modeling. DataDoors delivers TOPO! maps and i-cubed imagery in many open formats, including TIF, JPEG, SID and ECW, and supports the selection of projection and data.
Archives for April 17, 2008
This data store isn’t offering up free data, however, it is a fine commercial stopping point for those in search of hard to find International data products (China, Syria, Phillipines, and more). See the following:
Syria Geological Maps 1:200,000
SYRIA 1:200K Geological Maps/Syrian Arab Republic, Ministry of Industry, Department of Geological and Mineral Research; 1963. 19 Total Sheets, Contours 20m
Albania 1:25,000 Scale Topographic Mapping
Albania 1:25,000 (Republika Popullore Socialiste e Shqiperise 1:25,000) / Institutin Topografik te Ushtrise. Tirane : ITU. Contour interval: 10m. 6 colors. 1959-1990, 45x47cm.
Philippines 1:250,000 Scale Topographic Mapping
P.C.G.S. 1:250,000 (S-2500) / National Mapping & Resource Information Authority; Manila, Philippines, 1972-1999. 55 total sheets, 5 col., contours 100m, Transverse Mercator Projection, Clarke Spheroid 1866 Luzon Datum, 73X57 cm
Fugawi Touratel (aimed at hikers and outdoor enthusiasts) allows users to view and print Canadian and US topographic maps from Natural Resources Canada (NRCan) and the United States Geological Survey (USGS). The site contains NRCan maps in 1:50,000 and 1:250,000 scales for all Canadian Provinces, and USGS topographic maps for the USA, including Hawaii and Alaska, at all available scales, including 1:24,000, 1:100,000 and 1:250,000. Also served up are aerials and google maps. Finally, Touratel also offers up a mobile version and is available from Alltel wireless and Sprint. More on this app available in their latest PR