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1. Streamflow droughts aggravated by human activities despite management

Author

Landdegradatie en aardobservatie, Landscape functioning, Geocomputation and Hydrology, Van Loon, Anne F., Rangecroft, Sally, Coxon, Gemma, Werner, Micha, Wanders, Niko, Di Baldassarre, Giuliano, Tijdeman, Erik, Bosman, Marianne, Gleeson, Tom, Nauditt, Alexandra, Aghakouchak, Amir, Breña-Naranjo, Jose Agustin, Cenobio-Cruz, Omar, Costa, Alexandre Cunha, Fendekova, Miriam, Jewitt, Graham, Kingston, Daniel G., Loft, Jessie, Mager, Sarah M., Mallakpour, Iman, Masih, Ilyas, Maureira-Cortés, Héctor, Toth, Elena, Van Oel, Pieter, Van Ogtrop, Floris, Verbist, Koen, Vidal, Jean Philippe, Wen, Li, Yu, Meixiu, Yuan, Xing, Zhang, Miao, Van Lanen, Henny A.J., Landdegradatie en aardobservatie, Landscape functioning, Geocomputation and Hydrology, Van Loon, Anne F., Rangecroft, Sally, Coxon, Gemma, Werner, Micha, Wanders, Niko, Di Baldassarre, Giuliano, Tijdeman, Erik, Bosman, Marianne, Gleeson, Tom, Nauditt, Alexandra, Aghakouchak, Amir, Breña-Naranjo, Jose Agustin, Cenobio-Cruz, Omar, Costa, Alexandre Cunha, Fendekova, Miriam, Jewitt, Graham, Kingston, Daniel G., Loft, Jessie, Mager, Sarah M., Mallakpour, Iman, Masih, Ilyas, Maureira-Cortés, Héctor, Toth, Elena, Van Oel, Pieter, Van Ogtrop, Floris, Verbist, Koen, Vidal, Jean Philippe, Wen, Li, Yu, Meixiu, Yuan, Xing, Zhang, Miao, and Van Lanen, Henny A.J.

Published
2022

2. Streamflow droughts aggravated by human activities despite management

Author

Van Loon, Anne F., Rangecroft, Sally, Coxon, Gemma, Werner, Micha, Wanders, Niko, Di Baldassarre, Giuliano, Tijdeman, Erik, Bosman, Marianne, Gleeson, Tom, Nauditt, Alexandra, Aghakouchak, Amir, Brena-Naranjo, Jose Agustin, Cenobio-Cruz, Omar, Costa, Alexandre Cunha, Fendekova, Miriam, Jewitt, Graham, Kingston, Daniel G., Loft, Jessie, Mager, Sarah M., Mallakpour, Iman, Masih, Ilyas, Maureira-Cortes, Hector, Toth, Elena, Van Oel, Pieter, Van Ogtrop, Floris, Verbist, Koen, Vidal, Jean-Philippe, Wen, Li, Yu, Meixiu, Yuan, Xing, Zhang, Miao, Van Lanen, Henny A. J., Van Loon, Anne F., Rangecroft, Sally, Coxon, Gemma, Werner, Micha, Wanders, Niko, Di Baldassarre, Giuliano, Tijdeman, Erik, Bosman, Marianne, Gleeson, Tom, Nauditt, Alexandra, Aghakouchak, Amir, Brena-Naranjo, Jose Agustin, Cenobio-Cruz, Omar, Costa, Alexandre Cunha, Fendekova, Miriam, Jewitt, Graham, Kingston, Daniel G., Loft, Jessie, Mager, Sarah M., Mallakpour, Iman, Masih, Ilyas, Maureira-Cortes, Hector, Toth, Elena, Van Oel, Pieter, Van Ogtrop, Floris, Verbist, Koen, Vidal, Jean-Philippe, Wen, Li, Yu, Meixiu, Yuan, Xing, Zhang, Miao, and Van Lanen, Henny A. J.

Abstract

Human activities both aggravate and alleviate streamflow drought. Here we show that aggravation is dominant in contrasting cases around the world analysed with a consistent methodology. Our 28 cases included different combinations of human-water interactions. We found that water abstraction aggravated all drought characteristics, with increases of 20%-305% in total time in drought found across the case studies, and increases in total deficit of up to almost 3000%. Water transfers reduced drought time and deficit by up to 97%. In cases with both abstraction and water transfers into the catchment or augmenting streamflow from groundwater, the water inputs could not compensate for the aggravation of droughts due to abstraction and only shift the effects in space or time. Reservoir releases for downstream water use alleviated droughts in the dry season, but also led to deficits in the wet season by changing flow seasonality. This led to minor changes in average drought duration (-26 to +38%) and moderate changes in average drought deficit (-86 to +369%). Land use showed a smaller impact on streamflow drought, also with both increases and decreases observed (-48 to +98%). Sewage return flows and pipe leakage possibly counteracted the effects of increased imperviousness in urban areas; however, untangling the effects of land use change on streamflow drought is challenging. This synthesis of diverse global cases highlights the complexity of the human influence on streamflow drought and the added value of empirical comparative studies. Results indicate both intended and unintended consequences of water management and infrastructure on downstream society and ecosystems.

Published
2022
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3. Streamflow droughts aggravated by human activities despite management

Author

Van Loon, Anne F, primary, Rangecroft, Sally, additional, Coxon, Gemma, additional, Werner, Micha, additional, Wanders, Niko, additional, Di Baldassarre, Giuliano, additional, Tijdeman, Erik, additional, Bosman, Marianne, additional, Gleeson, Tom, additional, Nauditt, Alexandra, additional, Aghakouchak, Amir, additional, Breña-Naranjo, Jose Agustin, additional, Cenobio-Cruz, Omar, additional, Costa, Alexandre Cunha, additional, Fendekova, Miriam, additional, Jewitt, Graham, additional, Kingston, Daniel G, additional, Loft, Jessie, additional, Mager, Sarah M, additional, Mallakpour, Iman, additional, Masih, Ilyas, additional, Maureira-Cortés, Héctor, additional, Toth, Elena, additional, Van Oel, Pieter, additional, Van Ogtrop, Floris, additional, Verbist, Koen, additional, Vidal, Jean-Philippe, additional, Wen, Li, additional, Yu, Meixiu, additional, Yuan, Xing, additional, Zhang, Miao, additional, and Van Lanen, Henny A J, additional

Published
2022
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5. An upstream–downstream/observation–model approach to quantify the human influence on drought.

Author

Kingston, Daniel G., Mager, Sarah M., Loft, Jessie, and Underwood, Greg

Subjects
DROUGHTS, DROUGHT management, WATER management, STREAMFLOW, CLIMATE change, WATER shortages
Abstract

Disentangling the meteorological and human drivers of drought is a critical challenge. A key difficulty is identifying natural conditions against which human impacts can be analysed. Here, a combination of approaches is used: a hydrological model is developed for an upstream unmodified location and is then applied to a downstream site subject to irrigation-related abstractions: i.e. an upstream–downstream/observation–model approach. The relative importance of climate change is also investigated. The study location (the Lindis River, New Zealand) has a continental climate, and the lower river frequently runs dry during summer. Output from the hydrological model indicates that despite the warm and dry summer conditions there is a substantial influence of abstractions on Lindis River low flows – without abstractions, dewatering would likely be rare rather than regular. Increases in precipitation associated with climate change could reduce the occurrence of dewatering, but this eventuality will be strongly influenced by water management strategy. [ABSTRACT FROM AUTHOR]

Published
2021
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