Wessex Archaeology was commissioned by the Environment Agency to undertake an archaeological watching brief and recording during the demolition of structures adjacent to the River Avon in Upavon, Wiltshire. From consultation with the Wiltshire Council Assistant Archaeologist, Clare King, the remains of the weir/hatch structure were identified as being of potential historic interest and required an archaeological watching brief during their removal to record and photograph them along with any associated artefacts. In addition to the weir, there was a large levee/bank situated to the north of the weir/hatch structure which was removed as part of works. The levee/bank contained a brick lined culvert at its base linking the upstream and downstream channel, which was also to be removed. During the watching brief three phases of construction were identified in the weir structure during its demolition.The levee and culvert do not appear on any of the available mapping suggesting that they may be a later 20th century creation constructed on the site of an earlier channel, which is depicted in mapping from 1886-1975. This is supported by both the relatively modern nature of the culvert construction materials and the made ground re-deposited river dredged material of the levee construction.