construction and refurbishment of earthen irrigation channel banks

- gates provide a better deterrent to unwanted public access12.21.5 Areas where Protective Fencing may not be Required13/08/02 19:20The need for longitudinal fencing should be considered on an individual channeland farm type basis.In some circumstances fencing along both sides of a channel may not be required; ie- low stock numbers- no likely problems caused by soil types- no access track- when the channel passes through orchards or cropping areas- when damage is unlikely from farming practices, ie use as a headland, traffic way,rubbish dump or source of fill material12.21.6 Proven PracticeWhere significant damage to channel banks can occur, best practice is considered tobe physical separation using post and wire longitudinal fencing along both sides ofthe channel tenure boundary. Several types of fencing are available. The two mostcommonly used with stock are described in Table 12-15.The standard of fencing should be based on such factors as the existing standards offarm fencing, stocking types and rates and the availability of continual energy forelectric fences.12.21.7 Other options to Protective FencingAnother option to fencing to prevent damage to channels from stock is to introducea policy, such as fining farmers who damage channel banks. An awareness raisingprogram, eg advertisements on television and local newspapers will informlandowners of the costs to the irrigation authority in repairing channels and alsoinform them of the material consequences to them if they continue to allow stock onchannels.A policy approach can work well as a deterrent. Goulburn-Murray Water has apolicy of charging individual landowners for repairs to works damaged by stock.12.21.8 Decision CriteriaAn economic evaluation / risk assessment of fencing as compared with not fencingshould be carried out.12.21.9 Specifications and PlansThe specification used for fencing in Goulburn-Murray Water is attached.Construction and Refurbishment of Earthen Channel Banks August 2002 - Edition 1.0 12-58