Permanent opening - shingle removed by a series of hydraulic nozzles

Year proposed



  Not implemented

Location description


Description of option

  The removal of shingle from the opening site, by a series of hydraulic nozzles, was proposed.

Opening, closing, and lake level control description

  Permanent opening.

Maximum discharge

Maintenance/Management description

  "Questionable whether it would function satisfactorily". Shingle drift is not regular and is intensified when there is a heavy southerly gale.

Cost description


Fish passage benefit rating


Potential running impacts or benefits