Show simple item record Botter, G Basso, S Porporato, A Rodriguez-Iturbe, I Rinaldo, A 2011-06-21T17:26:24Z 2010-06-01
dc.identifier.citation Water Resources Research, 2010, 46 (6)
dc.identifier.issn 0043-1397
dc.description.abstract A novel approach is proposed to estimate the natural streamflow regime of a river and to assess the extent of the alterations induced by dam operation related to anthropogenic (e.g., agricultural, hydropower) water uses in engineered river basins. The method consists in the comparison between the seasonal probability density function (pdf) of observed streamflows and the purportedly natural streamflow pdf obtained by a recently proposed and validated probabilistic model. The model employs a minimum of landscape and climate parameters and unequivocally separates the effects of anthropogenic regulations from those produced by hydroclimatic fluctuations. The approach is applied to evaluate the extent of the alterations of intra-annual streamflow variability in a highly engineered alpine catchment of north-eastern Italy, the Piave river. Streamflows observed downstream of the regulation devices in the Piave catchment are found to exhibit smaller means/modes, larger coefficients of variation, and more pronounced peaks than the flows that would be observed in the absence of anthropogenic regulation, suggesting that the anthropogenic disturbance leads to remarkable reductions of river flows, with an increase of the streamflow variability and of the frequency of preferential states far from the mean. Some structural limitations of management approaches based on minimum streamflow requirements (widely used to guide water policies) as opposed to criteria based on whole distributions are also discussed. Copyright © 2010 by the American Geophysical Union.
dc.language.iso en_US en_US
dc.relation.ispartof Water Resources Research
dc.relation.isversionof 10.1029/2009WR008523
dc.title Natural streamflow regime alterations: Damming of the Piave river basin (Italy)
dc.title.alternative en_US
dc.type Journal Article
dc.description.version Version of Record en_US 2010-6-26 en_US
duke.description.endpage W06522 en_US
duke.description.issue en_US
duke.description.startpage W06522 en_US
duke.description.volume 46 en_US
dc.relation.journal Water Resources Research en_US
pubs.issue 6
pubs.organisational-group /Duke
pubs.organisational-group /Duke/Nicholas School of the Environment
pubs.organisational-group /Duke/Nicholas School of the Environment/Environmental Sciences and Policy
pubs.organisational-group /Duke/Pratt School of Engineering
pubs.organisational-group /Duke/Pratt School of Engineering/Civil and Environmental Engineering
pubs.publication-status Published
pubs.volume 46

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