The Rotary Ditch Cleaner GR 70 is a hydraulically driven machine that can be fitted to a GreenTec Scorpion Reach Arm or excavator. It is a highly efficient machine for cleaning smaller ditches and streams. The sludge and weeds are removed and thrown up on the cliff. The GR 70 has a working width of 2'2" and only requires 18.5 gpm.