Sustaining Water Use in the Murray Darling Basin

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Sustaining Water Use in the Murray Darling Basin

  1. 1. Case Study: The Murray-Darling Basin <ul><li>Sustaining water use </li></ul>
  2. 2. Water Restrictions <ul><li>Governments may impose strict limits on the use of water at various times </li></ul><ul><li>Restrictions have flexibility of different levels and fines associated with non-compliance </li></ul><ul><li>South Australia Water Restrictions </li></ul><ul><li>However, restrictions are difficult to enforce </li></ul>
  3. 3. Drip Irrigation and Trickle Tapes <ul><li>Provides water near the base of the plant. </li></ul><ul><li>Reduces loss of water to evaporation. </li></ul><ul><li>Requires slower flow of water. </li></ul><ul><li>Difficult & costly to install in large paddocks </li></ul>
  4. 4. Sub-surface irrigation <ul><li>Below the surface watering reduces evaporation </li></ul><ul><li>Roots of plants / crops get water quicker </li></ul><ul><li>Very costly to install the larger the area as the surface has to be cleared </li></ul>
  5. 5. Water Tanks <ul><li>New homes in South Australia must be built with water tanks </li></ul><ul><li>Government cash incentives for people to install water tasks </li></ul><ul><li>Good way of collecting freshwater that otherwise goes to waste </li></ul><ul><li>Cost is significant to some families </li></ul>
  6. 6. Using Greywater <ul><li>Using water that has already had one use. </li></ul><ul><li>Dependent on people’s commitment and habits </li></ul><ul><li>Some greywater cannot be used without treatment </li></ul>
  7. 7. Garden water savings <ul><li>Grow native drought tolerant vegetation as opposed to exotic species </li></ul><ul><li>Many think native Australian plants are not as attractive a traditional European garden </li></ul>
  8. 8. Home water savings <ul><li>Many different ways to save water in the home </li></ul><ul><li>Depends on people making the effort to change their ways </li></ul>
  9. 9. To sum up... <ul><li>Home use can cut water but this isn’t where most water is used </li></ul><ul><li>Some saving can be made in agriculture but needs to be enforced. Are we growing the right crops in the Murray-Darling Basin? </li></ul><ul><li>Significant efforts need to be made in cutting water use in industry. </li></ul>
  10. 10. Conclusion <ul><li>Water usage in the Murray-Darling Basin is unsustainable. </li></ul><ul><li>More water is being taken from the system than is being replaced. </li></ul><ul><li>Efforts are being made to be more sustainable but each has its disadvantages. </li></ul><ul><li>Currently, the economic benefit of exploitation outweighs environmental consideration. </li></ul>
  11. 11. Essay Question <ul><li>Describe and evaluate the sustainability of freshwater resource usage with reference to a case study. </li></ul>

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