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| Hughes, Neal. |
| It is commonly noted that Australian water rights, specifically those prevailing within the Murray-Darling Basin, represent a significant departure from hydrological reality (see for example Young and McColl 2009). Where water rights depart from the physical realities of water supply networks, water use and water trade decisions may result in external effects and associated allocative inefficiency. This paper examines how a more exclusive set of water property rights based around the concept of capacity sharing (Dudley and Musgrave 1988) might be defined and implemented in complex regulated river systems. In particular, the paper considers how the capacity sharing concept might be generalised to accommodate complex water supply systems (e.g. with multiple... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2010 |
URL: http://purl.umn.edu/59087 |
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| Hughes, Neal. |
| The ABARE (now ABARES) survey of irrigation farms in the Murray–Darling Basin began in 2006–07 and provides a comprehensive farm-level panel dataset, which, to date, has seen limited econometric analysis (Ashton et al. 2009). At present, three complete years of irrigation survey data are available: 2006–07, 2007–08 and 2008–09. In each year, approximately 850 farms are sampled. As with the ABARES broadacre surveys, the irrigation survey is a rotating (unbalanced) panel dataset. This study makes use of the irrigation survey data to estimate production functions at both the farm and enterprise (crop/livestock activity) level. In addition to the traditional categories of input use (land, labour, capital and materials), the study incorporates measures of water... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2011 |
URL: http://purl.umn.edu/100564 |
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| Hughes, Neal. |
| The intertemporal management of irrigation water involves a consumption-storage decision, where the benefits of using water today are evaluated against the uncertain benefits of storing water for future use. Traditionally in Australia, state governments have centrally managed the major water storages: making decisions on water allocations given prevailing storage levels. However, in practice there are a number of factors which may prevent a centralised approach from achieving an optimal allocation of water. This paper considers in detail two decentralised approaches to storage management: carryover rights and capacity sharing. This paper also presents a quantitative analysis of storage management, involving the application of a stochastic dynamic... |
| Tipo: Conference Paper or Presentation |
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| Ano: 2009 |
URL: http://purl.umn.edu/47642 |
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| Hughes, Neal; Lawson, Kenton; Davidson, Alistair; Jackson, Tom; Sheng, Yu. |
| This study introduces two advances to the aggregate productivity index methodology typically employed by ABARES. First, it accounts for the effects of climate variability on measured productivity by matching spatial climate data to individual farms in the ABARES farm surveys database. Second, a farm-level production frontier estimation technique is employed to facilitate the decomposition of productivity change into several key components, including technical change and technical efficiency change. The study makes use of farm-level data from the ABARES Australian agricultural and grazing industries survey database. An unbalanced panel dataset is constructed containing 13 430 observations (4255 farms) over the period 1977–78 to 2007–08. Spatial climate... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Productivity Analysis. |
| Ano: 2011 |
URL: http://purl.umn.edu/100563 |
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| Hughes, Neal; Hafi, Ahmed; Goesch, Tim; Brownlowe, Nathan. |
| Australian urban water utilities face a significant challenge in designing appropriate demand management and supply augmentation policies in the presence of increasing water scarcity and uncertainty over future dam inflows. This paper considers the design of optimal demand management and supply augmentation policies for urban water. In particular, scarcity pricing is considered as a potential alternative to the predominant demand management policy of water restrictions. A stochastic dynamic programming model of an urban water market is developed based on data from the Australian Capital Territory. The model involves an explicit consideration of uncertainty via a probability distribution over dam inflows. Given a specification of the demand and supply for... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Public Economics; Resource /Energy Economics and Policy; Risk and Uncertainty. |
| Ano: 2008 |
URL: http://purl.umn.edu/6005 |
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