![]() ![]() That data was obtained from this useful USGS resource, with all the major basins in the US having data in GPE-ready KML format (basin boundaries, tributaries with their average flows, landuse, etc.). This is mainly for easy visualization of where the Snake River and its affluents are. The network of all streams with an average flow of more than 10 m3/s in the Columbia River basin.Please refer to this post to learn all you need to know about setting and customizing such new placemarks. This video, after several tests, superposed three layers on the satellite images of the land surface: This capability to find the right data could be improved by the recent launch of a dataset search engine by Google. For instance, polygons made of points with geographical coordinates, used to delineate political boundaries or catchments among others, can be found increasingly easily, be it under formats specific to GPE (KML, KMZ), or traditional GIS format such as SHP (shapefile format, which can be imported to GPE with… “File => Import”, I told you it was intuitive). It relies on the increasingly large amounts of geographic data available online. ![]() ![]() GPE is indeed an intuitive way for people that have only a limited experience of geographic information systems (GIS) to put together nice-looking videos in a limited amount of time. Here is the video, produced with instructions from this post from the blog: My goal in using GPE was to set up a short video tour of the reservoirs on the main stem of the Upper Snake River, which has its upper reaches around the Teton Range (WY, USA) before going through much of southern Idaho. This account contains tidbits that I thought others might find useful, but it is not meant to be an unbiased or comprehensive resource. This post is an account of my recent experience with Google Earth Pro (GPE), a free online tool meant to make visualization of geographical information intuitive and accessible. ![]()
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