Optimal dynamic water allocation: Irrigation extractions and environmental tradeoffs in the Murray River, Australia
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Chu, Hoang Long; Stewardson, Mike; Kompas, Thomas; Grafton, Quentin
Description
A key challenge in managing semiarid basins, such as in the Murray-Darling in Australia, is to balance the trade-offs between the net benefits of allocating water for irrigated agriculture, and other uses, versus the costs of reduced surface flows for the environment. Typically, water planners do not have the tools to optimally and dynamically allocate water among competing uses. We address this problem by developing a general stochastic, dynamic programming model with four state variables (the...[Show more]
dc.contributor.author | Chu, Hoang Long | |
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dc.contributor.author | Stewardson, Mike | |
dc.contributor.author | Kompas, Thomas | |
dc.contributor.author | Grafton, Quentin | |
dc.date.accessioned | 2015-12-10T23:36:29Z | |
dc.identifier.issn | 0043-1397 | |
dc.identifier.uri | http://hdl.handle.net/1885/70155 | |
dc.description.abstract | A key challenge in managing semiarid basins, such as in the Murray-Darling in Australia, is to balance the trade-offs between the net benefits of allocating water for irrigated agriculture, and other uses, versus the costs of reduced surface flows for the environment. Typically, water planners do not have the tools to optimally and dynamically allocate water among competing uses. We address this problem by developing a general stochastic, dynamic programming model with four state variables (the drought status, the current weather, weather correlation, and current storage) and two controls (environmental release and irrigation allocation) to optimally allocate water between extractions and in situ uses. The model is calibrated to Australia's Murray River that generates: (1) a robust qualitative result that "pulse" or artificial flood events are an optimal way to deliver environmental flows over and above conveyance of base flows; (2) from 2001 to 2009 a water reallocation that would have given less to irrigated agriculture and more to environmental flows would have generated between half a billion and over 3 billion U.S. dollars in overall economic benefits; and (3) water markets increase optimal environmental releases by reducing the losses associated with reduced water diversions. | |
dc.publisher | American Geophysical Union | |
dc.rights | Author/s retain copyright | |
dc.source | Water Resources Research | |
dc.subject | Keywords: Australia; Baseflows; Dynamic programming model; Economic benefits; Environmental flow; Environmental release; Flood event; In-situ; Irrigated agriculture; Murray River; Optimal dynamics; State variables; Surface flow; Water allocations; Water diversions; | |
dc.title | Optimal dynamic water allocation: Irrigation extractions and environmental tradeoffs in the Murray River, Australia | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 47 | |
dc.date.issued | 2011 | |
local.identifier.absfor | 079901 - Agricultural Hydrology (Drainage, Flooding, Irrigation, Quality, etc.) | |
local.identifier.ariespublication | f2965xPUB2236 | |
local.type.status | Published Version | |
local.contributor.affiliation | Grafton, R Quentin, College of Asia and the Pacific, ANU | |
local.contributor.affiliation | Chu, Hoang Long, College of Asia and the Pacific, ANU | |
local.contributor.affiliation | Stewardson, Mike, University of Melbourne | |
local.contributor.affiliation | Kompas, Thomas, College of Asia and the Pacific, ANU | |
local.bibliographicCitation.issue | 6 | |
local.bibliographicCitation.startpage | W00G08 | |
local.bibliographicCitation.lastpage | 13 | |
local.identifier.doi | 10.1029/2010WR009786 | |
local.identifier.absseo | 970114 - Expanding Knowledge in Economics | |
dc.date.updated | 2016-02-24T08:23:47Z | |
local.identifier.scopusID | 2-s2.0-79960049177 | |
local.identifier.thomsonID | 000292397700003 | |
dcterms.accessRights | Open Access | |
Collections | ANU Research Publications |
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