A Weed cutter bucket is attachment built for cleaning ponds and water courses of the weed that builds up and clogs them up. They have a reciprocating knife/cutter bar fitted to the front edge and are generally made of a open grid of bars so water and fine silt can escape. they cut the weeds off and ca lift the out of the river for disposal. The knifeis similar to a old type mower or a combine header.
They come in various sizes to suit arm mounted mowers (hedge cutters) , excavators (usually long reach types) or suspended from Draglines.