Water waste

When we crossed the Rangitata and Rakaia Rivers last Friday they were in flood, braids joined as the water flowed bank to bank.

The occasional high flow can be good for river health, flushing it out but I don’t think it needed as much as it was getting last week to do that job.

Diverting some of the water at high flow into storage would provide water for recreation and irrigation without doing any harm to the river.

4 Responses to Water waste

  1. LeftRightOut says:

    The occasional high flow can be good for river health, flushing it out but I don’t think it needed as much as it was getting last week to do that job.

    But do you actually know how much is needed to flush the river? Or are you just eyeing up the rivers of gold that Nick Jekyl and Rodney Hyde intend stealing from the people of Canterbury?


  2. homepaddock says:

    LRO – I don’t know the amount, or frequency, needed to flush the river, but I would be surprised if there’s not an expert with a formula.

    No-one is stealing anything from the people of Canterbury – any plans for use of water will have to go through the resource consent process.


  3. Richard says:

    LRO. I can understand your view along with others about the appointment of the ECAN Commissioners- democracy issue. I think of the Commissioners as a positive step because the former entity had reached a stalemate and was not working, at least where water policy is concerned. The sacked Councilors might still be in place if they realized that water is not just a ECAN (Canterbury) issue but a South Island issue- forget territorial boundaries- there is no SI water policy. In sum- I have said this before and elsewhere -that we have too much water on the West Coast, that is wasted and too little in the East where it is needed. Why not channel water through the great divide from West to East and produce power along the way. My premise is not just economic. A water policy and plan would see a marriage between the ecological and economic interests.
    Oh yes, my ancestors are Ngai Tahu. They survived and I am here because they, in their hard daily living to survive did not did not pollute water. They treasured it.


  4. gravedodger says:

    Agree completely richard, there must be several oportunities to bring water that is totally surplus to the needs of the Westcoast eco system, to augment the flows in all the eastern flowing rivers and generate power at the same time. Makes more sense to me than damming a west coast river ie the Mokanui. Of course I am not totally opposed to damming that river but other options could be investigated first.
    For LRO even suggest that curtailing the flushing action of the westerly floods that you, HP, noted in the Rangitata and Rakaia rivers is shallow inane drivel used to support a false philosophy not unlike the deputy asking the sherrif “did you need to shoot that guy so dead”. Unless one has lived with the major flooding of rivers like the Waiau, generated by major rain events in the headwaters when absolutely nothing fell on the droughted lands further east, they probably have no real connection with what they are discussing. When events in the head waters threaten townships such as the seat of my formative years, Waiau, wich will be taken by the power of the river and it is not if but when and If anyone doubts what I say just call into the Hammer Hardware in Waiau and spend some time with Bruce who has watched the river for all of his 80 odd years and he is in no doubt that the river will prevail.
    We cannot control nature but the more successful of our Forebears who have succeded economically have adjusted their behaviour and survived, and wouldnt you just know it they have provided the wealth and democratic freedoms that enable people such as LRO to live and spout drivel such as He/She produced here.
    Yes rivers need flood events to maintain the health of the system but as HP points out, some harvesting can be done for the benefit of progress without having a negative result for the health of the river.


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