Mostly dense waterweed (Egeria densa) which is an aquatic weed native to Brazil but introduced to Australia for home aquariums and ponds. It grows as underwater mass with stems up to 1.5m long and really inhibits the flow of water.
Not so much in NSW. We are part of an irrigation scheme that has a 3000km network of channels that service 2400 farms over 750,000ha. Any areas where seepage is a concern the channels are clay lined. In Victoria there has been some channel lining recently with plastic sheeting but at $400,000/km it is a very expensive. They have lined about 1,000kms to date but there are big concerns about safety (when someone or an animal fall into channel they can’t get out) and on-going maintenance costs.
![[Farm-ily]](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivuDYSq5EPweb5CZ7W8NcUY4_T4lFZkLVN0DwbOwni4ZXBAAOxDyJGxvLd_RDakNspup1Q0RZBYzARRIbF_c4gb9v6EaIzJSk32VP4vEm1C7UkUYZFoueUzhGZvdTeK207GRyMDOZSIzE/s1028/76.+May+2021+Blog.jpg)
Looks like a big job. What weed type predominates?
ReplyDeleteMostly dense waterweed (Egeria densa) which is an aquatic weed native to Brazil but introduced to Australia for home aquariums and ponds. It grows as underwater mass with stems up to 1.5m long and really inhibits the flow of water.
Deleteon a whole different scale to me weeding the garden.................
ReplyDeletewished I had some of that water.........
Aren't they supposed to be lined and covered?
ReplyDeleteNot so much in NSW. We are part of an irrigation scheme that has a 3000km network of channels that service 2400 farms over 750,000ha. Any areas where seepage is a concern the channels are clay lined. In Victoria there has been some channel lining recently with plastic sheeting but at $400,000/km it is a very expensive. They have lined about 1,000kms to date but there are big concerns about safety (when someone or an animal fall into channel they can’t get out) and on-going maintenance costs.
DeleteThat must be a never ending job! Have a good day Diane
ReplyDeleteOnce again, you captured such beautiful light in this shot.
ReplyDeleteLovely light, but the job could take awhile. I hope it is the Water Boards responsibility.
ReplyDeleteYes it is!! I would not like to be paying for this excavators bill. It is a slow job, but not all the channels need doing, only some sections.
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