New Census data - USA Counties data files

Downloadable data files have been created to accompany the web-based USA Counties. Now users can download directly more than 5,900 data items from the Web site for the United States, the 50 states and the District of Columbia, and all 3,141 counties and county equivalents. Information in USA Counties covers topics such as: age, agriculture, ancestry, banking, building permits, business patterns, crime, earnings, education, elections, employment, government, health, households, housing, income, labor force, manufactures, population, poverty, retail trade, social programs, veterans, vital statistics, water use, and wholesale trade. See http://www.census.gov/support/USACdata.html

New Census data - USA Counties data files

Pennsylvania imagery and more

Need Pennsylvania imagery? See the PASDA website for loads of fine resources and data - See here for imagery download via FTP or web service access (Google earth, ArcIMS). NEed to locate a quad? No worries with this simple quad finder!

Pennsylvania imagery and more

National Geographic DataDoors portal

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.

National Geographic DataDoors portal

Reminder of Free NED Elevation data from USGS

Reminder about the NED elevation dataset... PS: don't waste your $$ and buy it from commercial data repositories... you never know what your getting!! The National Elevation Dataset (NED) is a new raster product assembled by the U.S. Geological Survey. NED is designed to provide National elevation data in a seamless form with a consistent datum, elevation unit, and projection. Data corrections were made in the NED assembly process to minimize artifacts, perform edge matching, and fill sliver areas of missing data. NED has a resolution of one arc-second (approximately 30 meters) for the conterminous United States, Hawaii, Puerto Rico and the island territories and a resolution of two arc-seconds for Alaska. NED data sources have a variety of elevation units, horizontal datums, and map projections. Access NED data from: http://edcsns17.cr.usgs.gov/EarthExplorer/ or http://seamless.usgs.gov/

For info on 10m data availability:

1. Go to the United States viewer on SDDS
2. At the map interface, on the lower right, under Layer, scroll to 1/3 NED Index
3. Click on the layer, then scroll to the bottom and click Refresh Map
4. This will display the areas where 1/3 arc second NED is available

For info on 3M data availability see here

Reminder of Free NED Elevation data from USGS

Google Earth data layers from Nanaimo, BC, Canada

The city of Nanaimo BC, Canada has been very proactive in working with Google Earth and making their data holdings available to users of "Earth". See the following page for some of the data they have made available - see http://earth.nanaimo.ca/data.html

Google Earth data layers from Nanaimo, BC, Canada