Aerial survey of channels under way
Goulburn-Murray Water has advised landowners that a lowflying helicopter will be checking drained G-MW channels in the Shepparton, Murray Valley and Central Goulburn irrigation areas.
G-MW customer infrastructure and assets manager Marc Lon Ho Kee said the helicopter operator Australian Aerial Mapping Group would check channels for leaks and seepage, and additional weed and silt build up.
‘‘The images captured during the survey will help us plan future maintenance works to ensure the ongoing efficient delivery of water to our customers’ properties via our irrigation delivery network,’’ he said.
The operator will use Light Detection and Ranging, a remote sensing method that uses light in the form of a pulsed laser to capture information.
The data will be used by G-MW to:
Check the channel waterway profile;
Check bank (height and width);
Model water flow that will then be used to identify channel capacity issues and help prioritise maintenance; and
Identify silt build up. Mr Lon Ho Kee said the aerial survey was being done now as the channels had been drained to carry out spraying of the noxious weed arrowhead with the herbicide Arsenal Xpress
condition during the irrigation off-season (May 15 to August 15).
‘‘We would like to take this opportunity to remind everyone living by the channels that have been sprayed that they should not use water from the channels for domestic purposes or stock or vegetation watering before August 15,’’ he said.
G-MW has written to all landholders living along the channels advising them of the spraying and aerial programs.