Lee erosion
From BAWiki
Definition
Local erosion of a bank section that adjoins in the direction of the flow (leeward) to a section of the shore that is naturally or by structural measures more resistant to erosion.
Competence for Waterways
Local erosion of a bank section that adjoins in the direction of the flow (leeward) to a section of the shore that is naturally or by structural measures more resistant to erosion.