High Resolution Layers - Imperviousness

High Resolution Layers (HRL) are raster data with 10m (20m for change layer) and 100m spatial resolution, which are part of the Copernicus Land Monitoring Service. The Imperviousness product contains 3 data sets: Degree of Imperviousness (IMD), Degree of Imperviousness change (IMC), and Degree of Imperviousness change classified (IMCC). Data is created by semi-automatic procedures over satellite imagery every 3 years. You can find technical specifications here: https://land.copernicus.eu/user-corner/technical-library/hrl-imperviousness-technical-document-prod-2015, information on the program at http://land.copernicus.eu.