Listed here are files in various formats to use as a reference for deciding which marks to recover. These files are derived from the NGS datasheets. You may use the format that best suits your needs and usage, but please note that the KML and SHP files are the most robust file types because they have more information in them and they contain useable hyperlinks to the LATEST NGS datasheets.
Included are two types of files that can be used in Google Earth - a KML file and a GPX file. The KML file is an Keyhole Markup Language file that displays symbols and has attributes for features. This file can be used in Google Earth GPX is a format that works in Google Earth, but which does not contain as rich an information packet. The GPX files however can be uploaded into GPS devices to serve as a navigation aide to finding points in the field.
Google Earth is a free desktop product for that displays aerial imagery and other GIS data on a desktop computer. Google Earth puts a planet's worth of imagery and other geographic information right on your desktop. One downloads the Google Earth program and installs it on one's machine. Then one may add their own data (such as KML file of NGS points) to see those data in their place on the earth.
These files are to support the mark recovery program to find and report the condition of pre-existing NGS points for the entire state of Montana. These NGS points are grouped by MARLS chapter for organizational purposes. Displaying the NGS points in Google Earth helps to visually understand the location, terrain, built environment, and access for the control points, and is helpful as a planning tool for deciding which points to go look for, where to find them, and how to get to them.
GPX - to use in a GPS and Google Earth
KML - to use in Google Earth
SHP - to use in ArcGIS (and other applications that support shapefiles)
The shapefiles also contain the hyperlink to the NGS datasheets.