Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/222269 
Year of Publication: 
2020
Citation: 
[Journal:] Hydrological Sciences Journal [ISSN:] 2150-3435 [Volume:] 65 [Issue:] 6 [Publisher:] Taylor & Francis [Place:] Abingdon [Year:] 2020 [Pages:] 1005-1021
Publisher: 
Taylor & Francis, Abingdon
Abstract: 
Droughts can have serious negative impacts on the water quality needed for irrigated agriculture. The Metropolitan region of Chile is a relevant producer of high-value crops and is prone to droughts. Standardized Drought Indices were used to characterize meteorological and hydrological droughts for the period from 1985 to 2015. To understand the relationship between droughts and water quality, we evaluated the correlations between daily discharge and surface water quality observations. The threshold level method was used to compare physicochemical parameters during hydrological drought periods with the Chilean water quality thresholds for agricultural uses. A significant (p < 0.05) negative relationship between discharge and electrical conductivity and major ions was found in most of the basin. Hydrological stations located in irrigation districts exceeded the official thresholds for these parameters during hydrological drought periods seriously threatening irrigated agriculture of the region.
Subjects: 
Mediterranean climate
climate change
meteorological drought
hydrological drought
standardized index
irrigated agriculture
water quality
Persistent Identifier of the first edition: 
Creative Commons License: 
cc-by Logo
Document Type: 
Article
Document Version: 
Published Version

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