ABOUT: The Habitat Patrol app allows you to detect and visualize land cover changes over a period of time and area of your choice. Draw a polygon with the tool on the left hand side of the screen, and then choose two dates to run the analysis. You will be shown any changes to landcover occurring between those dates, as well as satellite imagery from the beginning and end of the time period.
IMPORTANT: The algorithm powering this app can take quite a while to run. For the best results, polygons should be kept relatively small. Press Shift + Z on any area of the map to zoom in at the appropriate scale. Polygons drawn at this or a smaller scale will yield the best results.
This tool was designed and tested in the continental United States. At this time, results may be less reliable in other geographic regions and environments.