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CONFLICTS. “there is not enough water in the system to do everything we want”. Key knowledge and skills. Conflict over water use Importance of water as a resource Factors affecting the patterns of water use. Enough for everyone?. Water in the basin can be classified as:. Scarce Finite
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CONFLICTS “there is not enough water in the system to do everything we want”
Key knowledge and skills • Conflict over water use • Importance of water as a resource • Factors affecting the patterns of water use
Water in the basin can be classified as: • Scarce • Finite • ……. It is also a versatile resource, required to meet the needs of: • Economic • Domestic • Environmental • Recreational • Cultural • Aesthetics For those within and beyond the basin
Maintaining a healthy river environment • Wetlands • Floodplains • Wildlife • Vegetation
Providing reliable water supplies • Irrigation • Domestic needs • Industry • Mining • Recreation • HEP
Reduce impacts of flooding & ensure water is available during dry periods • Regulated • Storage • Dams • weirs
Conflict since 1851 • When the Murray became the border between NSW and Victoria • Exacerbated between 2002 – 2010 during the drought
How might conflicts arise? • Differing views and needs • One state vs another • Cities vs Rural • Environmental managers vs irrigators • Small farms vs big farms • Downstream vs up stream
Environmental flows • Concerns that if more water is returned to the river, less will be available for agriculture. • This will lead to loss of Jobs • Millions of dollars in economic growth • Decline of small towns
Users needs • Irrigators need to know how much water will be available so that they can plant their crops. • Tourist industry needs to know that there will be enough water to attract visitors • Environmentalists want “water for the river” • Residents in towns want enough water for every day use
Needs not always compatible • Irrigators and domestic users want to extract water from the river • while tourist operators, fishers and environmental managers want to keep it for the river
location • Depending on where a person is located may affect their perception of water use • SA is located at the end of the basin, and is the most dependent state
Factors contributing to conflicts over water use • Large number of stakeholders with varying needs • Water is unevenly distributed • Dams, weirs and channels provide irrigation water to regions were agriculture would otherwise not be possible • Between 1996 and 2006, the number of farm dams in the basin increased by 37% • The amount of water stored in them increased by 48% • Estimated to have reduced the flow by 450 GL
Factors contributing to conflict • Attitudes have changed regarding conservation and the need to supply environmental flows to the rivers • Australia’s growing population • River flows through 4 states and 1 territory • A number of LGA’s • Government organisations and NGO’s involved in allocating and managing water resources
Water has been over allocated in some regions • ½ the basins surface water management areas have been developed beyond 100% of sustainable water yield • Another third have exceeded 70% of sustainable yield
The cap • Limits the amount of water that can be extracted from the river
Regulated flows • Before development of the basin, the river mouth experienced drought like flows 5 years in every 100 • With water being extracted at 1994 levels these low flows were being experienced 61 years in 100 • If extractions were to continue at a similar rate, it is estimated this figure would rise to 74 years
Water extractions • From the basins rivers have continued to increase