Obtain the NHD as a KML through the NHD Viewer.
#Chrome .kmz viewer download#
It is recommended that you download only the area that you need, then convert it to KML in ArcMap (Step 3).Īfter completing this tutorial, you will be able to: When you download the entire extent of NHD as a KML, Google Earth will run extremely slow. This allows for storing or sending data in one file. What is a KMZ? A KMZ is a group of multiple KML's zipped into one file.
#Chrome .kmz viewer for free#
You can download Google Earth for free here. You will need Google Earth installed on your computer in order to complete this tutorial. If you only want a portion of the NHD, a Subbasin for example, you will need to first download the data as a personal or file geodatabase, and use ArcMap to convert the data to KML. When you download the NHD as a KML from the NHD Viewer, you will receive the nationwide extent. The user will then be able to view any geospatial data with The National Map data themes and basemaps. By uploading a KML to the NHD Viewer, a user can send a url with the information by email to anyone, absolutely free.
Why use a KML? KMLs allow users who are not familiar with GIS to observe geospatial layers in Google Earth or to add their own data to The National Map without having to use a GIS. If you want to view NHD Data in Google Earth or Google Maps, you will need to download it as a KML or convert an NHD Feature Class or Shapefile to KML. What is a KML? KML is keyhole markup language, a scripting language used to display geospatial information in multiple platforms such as Google Earth.
Downloading, Creating, and Uploading KML's
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