 By 2005 all commercial netting had been eliminated from the Earn.The section of the river between Comrie and St Fillans forms part of a national scenic area (NSA), one of 40 such areas in Scotland which are defined so as to identify areas of exceptional scenery and to ensure its protection by restricting certain forms of development.The River Earn NSA covers 3,108 ha, all of which lies within Perth and Kinross.