Our standard solution has been developed for dams. It works best on hard infrastructure that is over 10m wide and more than 100m long. This is simply a guide. For it is a concrete structure, then structures shorter in length would provide enough data, softer structures such as e.g. levees, canals and small embankments usually need to be longer in length to ensure we can achieve enough data points on the structure in order to derive ground motion and vegetation data.