

Are you sure that https://www.openstreetmap.org/way/1184891353 is a groyne? Is it really matching description at https://wiki.openstreetmap.org/wiki/Tag:man%20made=groyne ?

I am unsure how to interpret aerial imagery but it does not look at all like "A rigid structure built from a shoreline or riverbank that interrupts water flow and limits the movement of sediment"

What you tried to map here?
