Young, Adam (2023) St George Irrigation Area – Feasibility and Preliminary design for Stock and Domestic Pipeline. [USQ Project]
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Abstract
The St George Irrigation area, managed by Mallawa Irrigation (MI), currently supplies stock and domestic water to 80 customers via old unlined channels subject to large amounts of seepage and evaporation losses. Mallawa Irrigation Ltd has recently split from Sunwater to form a private irrigation district and has proposed a review of recent modernisation projects completed throughout NSW, VIC, and QLD to identify areas with successful modernisation of existing irrigation channels into full and partial stock and domestic pipeline upgrade to determine if a similar modernisation would be feasible within the St George Irrigation Area. The final aim being to determine grounds for a full-scale feasibility study.
Recently, significant government spending has been put into the modernisation of stock and domestic supply and irrigation channels, but it is difficult to determine the feasibility of such projects for smaller private irrigation districts. This research project aims to bring together key components of success for such projects and highlight how similar works could be adopted within the St George Irrigation Area.
A literature review determined the current standards for estimating evaporation, seepage losses, and water savings. Proposed and completed projects of similar scope were identified to determine, scope of works, costs, water savings, and environmental and socio-economic benefits these projects have had success with. Furthermore, a concept design was proposed to compare against the key factors found in the similar works to determine what a stock and domestic pipeline upgrade would look like for St George Irrigation Area.
The project determines estimation formulas for key channel losses for evaporation and seepage based on recent research. The design of concept pipeline found that similar outcomes could be achieved to those within the case study. Assessment of more similar projects for comparison and use this information to create a concept feasibility design framework for the use of other irrigation areas. Costs for a pipeline within the SGIA would be high due to flat terrain resulting in large diameter pipes and pumping however, feasibility could be achieved if Mallawa Irrigation are willing to cover the cost or if government spending is available.
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| Item Type: | USQ Project |
|---|---|
| Item Status: | Live Archive |
| Faculty/School / Institute/Centre: | Current – Faculty of Health, Engineering and Sciences - School of Engineering (1 Jan 2022 -) |
| Supervisors: | Gillies, Malcolm |
| Qualification: | Bachelor of Engineering (Civil) |
| Date Deposited: | 06 Oct 2025 22:32 |
| Last Modified: | 06 Oct 2025 22:32 |
| Uncontrolled Keywords: | irrigation; water saving |
| URI: | https://sear.unisq.edu.au/id/eprint/53014 |
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