A drain forming and/ or clearing apparatus is disclosed. The apparatus has a body (1) adapted to be attachable (6, 8) to a three point linkage of a suitable vehicle, the vehicle having a power take off ("PTO") and a hydraulic system. The body can be raised and lowered by the hydraulic system of the vehicle. A rotor assembly (2) is carried by and extends below the body and is rotated in use about a substantially vertical axis. The rotor is used to create and/or clear a ground channel when rotating and being advanced at least in part below ground level. The rotor is powered from a vehicle PTO connectable drive (9), or a vehicle hydraulic system connectable drive, carried by the body. At the other end of the body from the three point linkage is a ground following assembly (3). The follower assembly extends below the body so as to follow in a channel formed or cleared by the rotor. This helps to smooth out the channel made by the rotor. The rotor has a hub (11) connected to a plurality of blades (13), paddles or vanes outstanding from the hub and with a cant or rake to uplift soil when rotated in one rotational direction. Each blade assembly defines a leading edge with a member that is replaceable. Ties connect and support each blade assembly, each such tie connecting from the outside training edge of one blade to the next. One or more pre-rippers (17) may be attached to the body near the three point linkage to loosen the soil prior to the channel being cleared by the rotor.
