WETLAND RESTORATION ON PRIVATE LAND CASE STUDY 4: CASHMORE DISTRICT

This is the fourth of our early works case studies, where we review a trial sandbag structure installed at Cashmore.

This project involved the installation of a temporary sandbag weir in an artificial drain on a private property near Portland, in far south-western Victoria. The temporary weir was constructed using sandbags made from geo-textile material placed to form a weir wall and overflow sill within the existing drainage channel. The trial sandbag structure is designed to function as a drainage regulation weir, where water flowing out of the drainage channel is retained to promote pooling of the backwater into the natural wetland depression located directly upstream. In this instance, the landholder was interested in restoring the natural wetland area – noting that this area had become much drier since the construction of the drain – as the wetland area itself was considered to be of marginal value for agricultural purposes.

The temporary sandbag weir was installed in early June, prior to the above average July rains in that district, being completed by the landholder, members from a local landcare group and Nature Glenelg Trust.  The weir structure has been designed to recreate a 4 hectare wetland area by restricting drainage outflows by up to 60 cm within the existing drainage channel.  NGT’s Lachlan Farrington put together a short summary of the action, which can be viewed below:

Temporary trial weir structures provide both Nature Glenelg Trust and the landholders we work with, with an inexpensive and low risk approach to trialing wetland restoration measures. Once the functionality of the structure and its wetland restoration impact have been assessed by both parties – under real conditions – a permanent structure can be designed and installed according to a set of agreed criteria. In this way, trial structures can provide a valuable (no-obligation) first step, along the path to providing lasting, self-sustaining and effective wetland restoration solutions in the region.

Trial structures are not necessary at every site, but are a good option for people who are tentative about making the leap to a permanent structure, without having the opportunity to see what the potential inundation effect will be first under a range of settings and conditions. If you are interested in having a wetland restoration trial undertaken on your property, please contact us here.

This Case Study is the fourth in a series to illustrate wetland restoration in practice, delivered through Nature Glenelg Trust’s Wetland Restoration Program on Private Land and funded by the Australian Government.

  • Mt Vandyke fundraiser off to a solid start! June 10, 2021
    It has been almost 2 weeks since we launched the new NGT fundraiser for Mt Vandyke, and the great news is that thanks to the generosity of some wonderful early supporters, we have already made a big dent in the land purchase loan! As of today, 36 different donors have so far contributed just over $20,000 ...
  • World Environment Day 2021 – NGT interview with Rod Sparks on ABC South East June 10, 2021
    On last Saturday, the 6th June, I caught up with Rod Sparks in the Mt Gambier ABC studio for a wide-ranging chat about wetland restoration, environmental change in our region and NGT’s latest big news – the Mt Vandyke restoration project in western Victoria – to celebrate World Environment Day 2021. Somewhat fittingly, the theme for ...
  • Walker Swamp & Mt Vandyke updates – NGT interview with Gavin McGrath on ABC South West June 10, 2021
    The dark colour form of the Eastern Quoll: a species we are now planning to return to the far South West at Mt Vandyke.Earlier this week, on Wednesday the 9th of June, I caught up with Gavin McGrath from ABC Ballarat and South West Victoria for another ‘good ole’ chat, as we do once in ...
  • Announcing… Mount Vandyke – NGT’s new restoration trial in the heart of Cobboboonee National Park May 28, 2021
    For any readers who have previously completed the stretch of the Great South West Walk through the Cobboboonee forest, you might recall that not long after you leave the Fitzroy Camp, a small in-lying parcel of private farmland suddenly appears, situated on a volcanic peak in the middle of the National Park.The forest stretch ...
  • You can help us secure the future of NGT’s 8th Restoration Reserve – Mount Vandyke May 28, 2021
    On two occasions since NGT began back in 2012, we have asked our wonderful supporters to chip in towards important land purchases – successfully contributing to the creation of two of our Reserves – Mt Burr Swamp in 2016 and Walker Swamp in 2018. Our third land purchase fundraiser is for Mount Vandyke, traditionally known as ...
  • NGT welcomes Bec, Tom and Leah to the team! May 28, 2021
    In some fantastic recent news, I am pleased to be able to report that NGT has welcomed Bec Sheldon, Tom Sheehan and Leah Kemp to our team. Matching the geography of our work, they are spread around south-eastern Australia! Bec is based in Hobart and now working part-time for NGT as a Senior Wetland Ecologist. She ...
  • The assessment of Moulting Lagoon and the Apsley Marshes continues, with a visit to Long Point May 28, 2021
    This update is to let NGT newsletter readers know that our work on the east coast of Tassie continues. With our first project update soon to be sent out to landholders and community members by email, if any NGT newsletter subscribers know this part of Tassie well, and may have observations or insights to share ...
  • Taking a closer look at the eco-hydrology of the upper Wannon River in the Grampians National Park May 28, 2021
    Thanks to a recent grant funding announcement by the Australian Government, in July NGT will commence a 3 year investigation – to be led by NGT”s Dr Greg Kerr – where we will take a closer look at the ecology and hydrology of the upper Wannon River in the southern Grampians. For any readers who ...
  • Wind, water and vegetation are reshaping the Long Swamp restoration site at Nobles Rocks May 28, 2021
    The restoration of Long Swamp has been quite a journey, and nearly two years on from the completion of final major restoration works at Long Swamp, natural coastal processes have taken over and are reshaping the dunes around the project site. The restoration works of 2019 involved pumping around 500 cubic metres of sand over our ...
  • NGT and the Glenelg Hopkins CMA – working together for biodiversity outcomes in South West Victoria May 28, 2021
    I recently had the privilege of meeting with my counterpart at the Glenelg Hopkins CMA, CEO Adam Bester, and we signed the new partnership statement between our organisations.The GHCMA’s Adam Bester (left) with NGT’s Mark Bachmann (right). Photo: Liz MechamDespite a few differences in how our organisations operate – given that NGT sits outside ...

Click here for the full list of project related blogs

No Comments

Sorry, the comment form is closed at this time.

X