The US Fish and Wildlife service makes a number of digital spatial data products available to the public for free download. The data…
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GISuser Guide to downloading Free USGS 1:100K DLGs
Digital Line Graphs (DLGs) are digital vector representations of cartographic information derived from USGS maps and related sources. Intermediate-scale DLG’s are derived from…
GISuser Guide to downloading Free 1:250K USGS DEMs
A digital elevation model (DEM) is a digital file consisting of terrain elevations for ground positions at regularly spaced horizontal intervals. The USGS…
The GISuser's Guide to locating and downloading Free USGS data
So, you need to work with USGS data. Perhaps you need DRGs, maybe some DEMs, or maybe even some DOQQs. Before you begin…
Next Generation of Internet Search Engines Enhanced for Location-Based Search
Toronto, ON – NAC Geographic Products (NACGEO) and Metamend have announced that the two companies have reached an agreement in an Internet search engine…
The American Surveyor Magazine – Jan/Feb 2004, Vol.1 No.1 – Table of Contents
Charter Issue Table of Contents 185kb Field of Flags A Civil War battlefield hosts a stirring memorial to the victims of September 11….
The GISuser's Guide to locating and downloading Free USGS data (Part 2)
This feature complements the original article "The GISuser‘s Guide to locating and downloading Free USGS data". It provides the reader with additional information…
LIDAR Data Retrieval Tool (LDART) – Data for Mapping Coastal Topography in the U.S
(January, 2004) LIDAR Data Retrieval Tool (LDART) is a Web-based application that the NOAA Coastal Services Center developed to allow its customers, partners,…
GISuser Looks at Geobase
Through the GeoBase portal, users with an interest in the field of geomatics have access to quality geospatial information at no cost and…
Massive mosaic is product of space-based earth observation
(Hundreds and hundreds of satellite scenes grouped into tiles have been painstakingly pieced together by Natural Resources Canada to create one huge photograph…