This video
demonstrates how to build a diversion bank with a spillway at its lower end to
safely dispose of the captured water at a stable site where the water will
spread out across the landscape.
In this
example the diversion bank will stop water flowing into gully heads and
therefore stop their continued headwall collapse and retreat upslope. The gully may
require other works further downslope to stop it eroding at other points, such
as battering and check banks.
The positioning of the bank needs to be pegged using a level and staff, and dimensions of the bank
needs to be calculated based on the amount of water expected to be collected. Additional banks may be required further upslope. For more information and technical advice about the required size and spacing of banks, click here or contact your local soil conservation officer. Also, you can order more detailed videos and manuals though the Victoria River District Conservation Association. To contact them, click here.
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