Hobart is the country’s second driest capital (after Adelaide) and the South Arm Peninsula is drier still, laying in a rain shadow created by Mt Wellington with dominant westerly wind patterns
Our plan for Arm End was, and remains, to rehabilitate this unique site to create a valuable community asset. Water is critical to this rejuvenation of the landscape and of course, for creating the world-class golf course to support it.
Given there is no reticulated water supply on the Peninsula, many options for water were considered including salt tolerant turf for seawater irrigation, fresh water piped across from Droughty Point and solar energy desalination. All have their benefits and risks/costs but the option ultimately selected has many benefits, not just to the environment but to the local community.
All approvals have been received and work is now underway to build a pipeline from the Blackman’s Bay Water Treatment facility on the western side of the River Derwent to South Arm on eastern side to bring across Class B treated water.
Advantages and Benefits
This has many advantages and benefits:
- It makes use of treated water currently being pumped into the river thereby reducing the impact on the Derwent River Marine Environment.
- Bores draining the water table at Arm End are not required.
- A valuable resource is brought to the South Arm community allowing a consistent water supply for revegetation and landscaping, for growing produce in small or large quantities and enhancing community surrounds.
- The Iron Pot Golf Club and the Course in its beautiful coastal setting can both thrive.
- The landscape surrounding the South Arm RSL Sub-Branch’s magnificent Memorial Park can be softened with greenery.
- Plus potential access to water also increases land value.
Environmentally importantly too:
- Habitats of the critically endangered Spotted Handfish have been identified and will be untouched by the pipeline.
- The pipeline will be constructed using minimal environmental impact methods.
- Full site water demands for Arm End and all other potential users can easily be met.
What is the quality of the water?
The water will be classified as Class B water – irrigation quality water – http://epa.tas.gov.au/Documents/Use_of_Recycled_Water_December_2002.pdf
What is the pipeline route?
Connected into the Blackman’s Bay Treatment Plant, the pipeline will be firmly anchored to the seabed, across the River Derwent, to the northern end of Halfmoon Bay and aligned up Algona Street to South Arm Road. The pipe water pressure will be boosted and then sent both north to Arm End and south to the RSL Community Club and Iron Pot Golf Club. Other users can connect into the pipe along the alignment.
Who can use the water?
The Arm End Recreation Reserve will make the water available to anyone on the South Arm Peninsula.
All users will be required to have an Irrigation Environmental Management Plan (IEMP) and be signed onto the Cooperative Users Management Plan.
How much will the water cost?
The Arm End group is finalising negotiations with TasWater – as such wWater unit rates are still to be confirmed, but will likely be very afforbale given TasWater currently dumps the water into the river. The only cost to users will be pipeline upkeep and maintenance based on a proportional per use scale. Arm End as the major user will pay for most of the operational costs.
Who will regulate the water?
Arm End will seek approvals to set up and manage a co-op plan which outlined responsibilities and terms and conditions for all users. Connected users will be invited to join the group, which will operate under an approved and structured framework . Arm End now has all the complex approvals necessary with Kingsborough and Clarence City Councils, Parks & Wildlife / Crown lands and the EPA..
Why do we need a pipeline?
This is the most sustainable and environmentally and cost-effective way of bringing water to Arm End. We also looked at other water solutions including a pipeline from Droughty Point, we investigated groundwater, desalination, solar/condensation and trucking in the water. The method we are using will use the valuable irrigation suitable water that is currently being wasted into the river.