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There has been renewed interest in the performance, functionality, and sustainability of traditional small-scale storage interventions (check dams, farm bunds and tanks) used within semi-arid regions for the improvement of local water security and landscape preservation. The Central Groundwater Board of India is encouraging the construction of such interventions for the alleviation of water scarcity and to improve groundwater recharge. It is important for water resource management to understand the hydrological effect of these interventions at the basin scale. The quantification of small-scale interventions in hydrological modelling is often neglected, especially in large-scale modelling activities, as data availability is low and their hydrological functioning is uncertain. A version of the Global Water Availability Assessment (GWAVA) water resources model was developed to assess the impact of interventions on the water balance of the Cauvery Basin and two smaller sub-catchments. Model results demonstrate that farm bunds appear to have a negligible effect on the average annual simulated streamflow at the outlets of the two sub-catchments and the basin, whereas tanks and check dams have a more significant and time varying effect. The open water surface of the interventions contributed to an increase in evaporation losses across the catchment. The change in simulated groundwater storage with the inclusion of interventions was not as significant as catchment-scale literature and field studies suggest. The model adaption used in this study provides a step-change in the conceptualisation and quantification of the consequences of small-scale storage interventions in large- or basin-scale hydrological models.
Robyn Horan; Pawan Wable; Veena Srinivasan; Helen Baron; Virginie Keller; Kaushal Garg; Nathan Rickards; Mike Simpson; Helen Houghton-Carr; H. Rees. Modelling Small-Scale Storage Interventions in Semi-Arid India at the Basin Scale. Sustainability 2021, 13, 6129 .
AMA StyleRobyn Horan, Pawan Wable, Veena Srinivasan, Helen Baron, Virginie Keller, Kaushal Garg, Nathan Rickards, Mike Simpson, Helen Houghton-Carr, H. Rees. Modelling Small-Scale Storage Interventions in Semi-Arid India at the Basin Scale. Sustainability. 2021; 13 (11):6129.
Chicago/Turabian StyleRobyn Horan; Pawan Wable; Veena Srinivasan; Helen Baron; Virginie Keller; Kaushal Garg; Nathan Rickards; Mike Simpson; Helen Houghton-Carr; H. Rees. 2021. "Modelling Small-Scale Storage Interventions in Semi-Arid India at the Basin Scale." Sustainability 13, no. 11: 6129.
Recently, there has been renewed interest in the performance and functionality of traditional small-scale storage interventions (check dams, farm bunds and tanks) used across India for the improvement of local water security. The Central Groundwater Board of India is encouraging the construction of such interventions for the alleviation of water scarcity. It is of critical importance to understand the hydrological effect of these interventions at basin scales to maximise their effectiveness. The quantification of small-scale interventions in hydrological modelling is often neglected, especially in large-scale modelling exercises. A bespoke version of the GWAVA model was developed to assess the impact of interventions on the water balance of the Cauvery Basin and two smaller sub-catchments. Model results demonstrate that farm bunds appear to have a negligible effect on the estimated average annual streamflow at the outlets of the two sub-catchments and the basin whereas tanks and check dams have a more significant effect. Interventions generally were found to increase evaporation losses across the catchment. The model adaption used in this study provides a step-change in the conceptualisation and quantification of the consequences of small-scale storage interventions in large- or basin-scale hydrological models.
Robyn Horan; Pawan S Wable; Veena Srinivasan; Helen Elizabeth Baron; Virginie Keller; Kaushal K K Garg; Nathan Rickards; Mike Simpson; Helen Houghton-Carr; Gwyn Rees. Modelling Small-scale Storage Interventions at the Basin Scale. 2021, 1 .
AMA StyleRobyn Horan, Pawan S Wable, Veena Srinivasan, Helen Elizabeth Baron, Virginie Keller, Kaushal K K Garg, Nathan Rickards, Mike Simpson, Helen Houghton-Carr, Gwyn Rees. Modelling Small-scale Storage Interventions at the Basin Scale. . 2021; ():1.
Chicago/Turabian StyleRobyn Horan; Pawan S Wable; Veena Srinivasan; Helen Elizabeth Baron; Virginie Keller; Kaushal K K Garg; Nathan Rickards; Mike Simpson; Helen Houghton-Carr; Gwyn Rees. 2021. "Modelling Small-scale Storage Interventions at the Basin Scale." , no. : 1.
Recently, there has been renewed interest in the performance, functionality, and sustainability of traditional small-scale storage interventions (check dams, farm bunds and tanks) used across India for the improvement of local water security. The Central Groundwater Board of India is en-couraging the construction of such interventions for the alleviation of water scarcity. It is of critical importance to understand the hydrological effect of these interventions at basin scales to maximise their effectiveness. The quantification of small-scale interventions in hydrological modelling is often neglected, especially in large-scale modelling exercises. A bespoke version of the GWAVA model was developed to assess the impact of interventions on the water balance of the Cauvery Basin and two smaller sub-catchments. Model results demonstrate that farm bunds appear to have a negligible effect on the estimated average annual simulated streamflow at the outlets of the two sub-catchments and the basin whereas tanks and check dams have a more significant effect. In-terventions generally were found to increase evaporation losses across the catchment. The model adaption used in this study provides a step-change in the conceptualisation and quantification of the consequences of small-scale storage interventions in large- or basin-scale hydrological models.
Robyn Horan; Pawan Wable; Veena Srinivasan; Helen Baron; Virginie D. J. Keller; Kaushal K. Garg; Nathan Rickards; Mike Simpson; Helen Houghton-Carr; Gwyn Rees. Modelling Small-scale Storage Interventions in Semi-Arid India at the Basin Scale. 2021, 1 .
AMA StyleRobyn Horan, Pawan Wable, Veena Srinivasan, Helen Baron, Virginie D. J. Keller, Kaushal K. Garg, Nathan Rickards, Mike Simpson, Helen Houghton-Carr, Gwyn Rees. Modelling Small-scale Storage Interventions in Semi-Arid India at the Basin Scale. . 2021; ():1.
Chicago/Turabian StyleRobyn Horan; Pawan Wable; Veena Srinivasan; Helen Baron; Virginie D. J. Keller; Kaushal K. Garg; Nathan Rickards; Mike Simpson; Helen Houghton-Carr; Gwyn Rees. 2021. "Modelling Small-scale Storage Interventions in Semi-Arid India at the Basin Scale." , no. : 1.
Robyn HORANiD; Pawan S Wable; Veena Srinivasan; Helen Elizabeth BaroniD; Virginie Keller; Kaushal K K Garg; Nathan RickardsiD; Mike Simpson; Helen Houghton-CarriD; Gwyn ReesiD. Modelling Small-scale Storage Interventions at the Basin Scale. 2020, 1 .
AMA StyleRobyn HORANiD, Pawan S Wable, Veena Srinivasan, Helen Elizabeth BaroniD, Virginie Keller, Kaushal K K Garg, Nathan RickardsiD, Mike Simpson, Helen Houghton-CarriD, Gwyn ReesiD. Modelling Small-scale Storage Interventions at the Basin Scale. . 2020; ():1.
Chicago/Turabian StyleRobyn HORANiD; Pawan S Wable; Veena Srinivasan; Helen Elizabeth BaroniD; Virginie Keller; Kaushal K K Garg; Nathan RickardsiD; Mike Simpson; Helen Houghton-CarriD; Gwyn ReesiD. 2020. "Modelling Small-scale Storage Interventions at the Basin Scale." , no. : 1.
The Narmada river basin is a highly regulated catchment in central India, supporting a population of over 16 million people. In such extensively modified hydrological systems, the influence of anthropogenic alterations is often underrepresented or excluded entirely by large-scale hydrological models. The Global Water Availability Assessment (GWAVA) model is applied to the Upper Narmada, with all major dams, water abstractions and irrigation command areas included, which allows for the development of a holistic methodology for the assessment of water resources in the basin. The model is driven with 17 Global Circulation Models (GCMs) from the Coupled Model Intercomparison Project Phase 5 (CMIP5) ensemble to assess the impact of climate change on water resources in the basin for the period 2031–2060. The study finds that the hydrological regime within the basin is likely to intensify over the next half-century as a result of future climate change, causing long-term increases in monsoon season flow across the Upper Narmada. Climate is expected to have little impact on dry season flows, in comparison to water demand intensification over the same period, which may lead to increased water stress in parts of the basin.
Nathan Rickards; Thomas Thomas; Alexandra Kaelin; Helen Houghton-Carr; Sharad K. Jain; Prabhash K. Mishra; Manish K. Nema; Harry Dixon; Mohammed M. Rahman; Robyn Horan; Alan Jenkins; Gwyn Rees. Understanding Future Water Challenges in a Highly Regulated Indian River Basin—Modelling the Impact of Climate Change on the Hydrology of the Upper Narmada. Water 2020, 12, 1762 .
AMA StyleNathan Rickards, Thomas Thomas, Alexandra Kaelin, Helen Houghton-Carr, Sharad K. Jain, Prabhash K. Mishra, Manish K. Nema, Harry Dixon, Mohammed M. Rahman, Robyn Horan, Alan Jenkins, Gwyn Rees. Understanding Future Water Challenges in a Highly Regulated Indian River Basin—Modelling the Impact of Climate Change on the Hydrology of the Upper Narmada. Water. 2020; 12 (6):1762.
Chicago/Turabian StyleNathan Rickards; Thomas Thomas; Alexandra Kaelin; Helen Houghton-Carr; Sharad K. Jain; Prabhash K. Mishra; Manish K. Nema; Harry Dixon; Mohammed M. Rahman; Robyn Horan; Alan Jenkins; Gwyn Rees. 2020. "Understanding Future Water Challenges in a Highly Regulated Indian River Basin—Modelling the Impact of Climate Change on the Hydrology of the Upper Narmada." Water 12, no. 6: 1762.