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Yarnauwi Farm

~ Fleurieu Peninsula, South Australia

Yarnauwi Farm

Category Archives: waterways

Hitting the surf: Measuring dam capacity

05 Monday Aug 2013

Posted by Joel in diy, planning, waterways

≈ 1 Comment

Tags

planning, seasons, water, waterways, winter

IMG_2869With our dam now full, one task that’s been on our list since summer is to calculate its approximate capacity to aid with planning our watering infrastructure. We found a couple of possible methods: the Western Australian Department of Agriculture has a very thorough approach, while the Victorian Department of Primary Industries offers a rougher option. We opted for the Victorian method, not least because it offered a chance for us to take our very patriotic inflatable adventure craft out onto the pond.

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After the rain: erosion control after 6 months

11 Tuesday Jun 2013

Posted by Joel in diy, ecology, regeneration, waterways

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Tags

ecology, erosion, kangaroos, revegetation, soil, trees, water, waterways, winter

IMG_2573

A Juncus seed head on one of the ridgelines.

With a landscape scarred with a history of erosion, and soil associations that the CSIRO SoilMapp discusses in the most nervous of tones, we’d been apprehensive about this season’s heavy rains. After two days of constant downpours, the water sat on the surface, filled every hollow and started to run in strange new flow patterns along the most unexpected of ridgelines. Neighbours told us they hadn’t seen rain like that for some years, and that erosion headcuts had been reawakened all through the surrounding valleys.

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Zephyr Creek before and after: now with less car bodies and more trees!

It was a relief to see that our improvised erosion control strategies (use local materials; slow water flow with rock, fallen timber or mulch; always work on contour; get plants in the ground) had all worked to some degree. Indeed, areas where we had made an intervention, however minor, fared much better than areas without. After the dryness of summer it was unexpectedly thrilling to see water flow, vegetation spring up around the branches we stacked across drainage lines, and most of all, creek banks where we’d removed car bodies didn’t slump and be carried off into the neighbouring paddock.

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Trees, cheese and breeze

10 Monday Jun 2013

Posted by sophie in ecology, regeneration, waterways

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Tags

ecology, erosion, kangaroos, revegetation, trees, waterways

IMG_2532_2

Last weekend we got in the first of (hopefully) many rounds of tree plantings. The ground was soaked after a full two days of rain, the clay soft and pliable, perfect for slipping in the planned 250 trees in several exposed areas of the property where rubbish extraction has opened the now-cleared banks up to more erosion. A team of weather-trusting family and friends came along for the adventure, some planting trees for the first time, others professional tree planters. Continue reading →

The ethics of junk clearing and erosion control

26 Friday Apr 2013

Posted by Joel in diy, regeneration, waterways

≈ 1 Comment

Tags

erosion, permaculture, planning, reuse, revegetation, soil, trees, water, waterways, winter

We’re celebrating the clean-up of what we call Zephyr Creek, after the 1960s Ford that was wedged at the bottom of the gully. Through the work of a local metal removalist, and a bit of time scrabbling in the mud, most of the major rubbish from the creek has been extracted. Inspired by the amazing work on rainwater harvesting and riparian restoration of Brad Lancaster and organisations like the Quivera Coalition, we’ve implemented our own rustic brand of erosion control. It’s not too pretty, but it is inexpensive (free, in fact) to build and maintain, uses available resources and is easy to alter depending on its effectiveness.

IMG_2179IMG_2247IMG_2400– Going, going, gone!

After clearing the rubbish from the creek, we used an A-Frame to measure and mark the contours at two points in the steep bank. We hammered stakes at regular intervals, then built up leaky terraces using scrap construction timber from the gully itself and fallen tree branches. Some of the loose soil promptly settled behind the barriers, and in a few weeks will be planted out with indigenous plants to further stabilise the area.

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Junk mining: one tonne gone…

17 Sunday Feb 2013

Posted by Joel in diy, regeneration, waterways

≈ 4 Comments

Tags

ecology, erosion, recycling, reuse, revegetation, soil, waste, water, waterways

If anyone asks, we're "agisting ponies". This terrifying rocking horse oversees one of the rubbish piles.

If anyone asks, we’re “agisting ponies”. This terrifying rocking horse oversees one of the rubbish piles.

As we’ve noted in our curated collection of farm-found rubbish, the largely idyllic setting of the property masks a narrow badland of erosion gullies repopulated with human trash. It’s bizarre sifting through it, a process of contemporary archaeology that often strays towards the forensic as we imagine the human story behind the array of objects gradually becoming swallowed beneath sediment and phalaris grass.

Work in progress (17/2/12)

Work in progress (17/2/12).

One of our missions is to clear the large rubbish from the gullies, increasing their habitat value and allowing us to more effectively address erosion and revegetation, while also allowing for the reuse and recycling of the accumulated items. On a blazing February morning, we helped a local scrap dealer begin to extract recyclable metal from one of the most dramatically eroded gullies. In an hour and a half we had well over a tonne of metal, in the form of a deep freeze (packed with coral, rainbow-coloured aquarium stones and empty tins of bourbon and cola), two washing machines, an electric oven and stove, a motorbike, three BMX bikes, an exercise bike, venetian blinds, chook wire, corrugated iron, steel tubing, downpipes, engine parts, metal drums, wheel rims and homemade farm machinery. Continue reading →

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