Economic impacts of NSW water sharing plan rules on irrigated agriculture: a case study of Coopers Creek

A water sharing plan is a legal document prepared under the Water Management Act 2000 (WMA) inNew South Wales (NSW). It establishes the rules for sharing water between the environment andentitlement holders, with the goal of simultaneously protecting water dependant ecosystems andproviding certainty for water users. In NSW 49 water sharing plans have commenced to date andanother 40 plans are due to be commenced within next two years covering all surface andgroundwater systems. The WMA requires that due consideration be given to the socio-economicimpacts of the water sharing rules during preparation and mid-term reviews of the plans.This paper presents the framework used to undertake socio-economic assessment of the impacts ofwater sharing rules and a case study of impact assessment. The NSW Office of Water (the Office) hasused a staged methodological framework that is consistent with the socio-economic assessmentguidelines for river, groundwater and water management committees developed by the IndependentAdvisory Committee on Socio-economic Analysis (IACSEA 1998). This framework is simple, relevantand cost effective. The case study presents socio-economic impact assessment of water sharingrules of the Coopers Creek Water Sharing Plan that commenced in 2004.The results of the case study indicate that the proposed rules could have significant negative orpositive impacts on regional irrigated production and employment. This shows that proposals forenvironmental gains may result in substantial economic losses to the irrigators.