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Scientist-Hydrology Email: R.Nune@cgiar.org Phone: +91 40 30713358 |
Research Papers:
2021 |
Impact of raised beds on surface runoff and soil loss in Alfisols and Vertisols. Kaushal K.Garg, KH Anantha, Sreenath Dixit, Rajesh Nune, Akuraju Venkataradha, Pawan Wable, Nagaraju Budama and Ramesh Singh (2021): In: CATENA, 211 , 2021. (Type: Journal Article | Links | BibTeX) @article{K.Garg2021, title = {Impact of raised beds on surface runoff and soil loss in Alfisols and Vertisols}, author = {K.Garg Kaushal and Anantha KH and Dixit Sreenath and Nune Rajesh and Venkataradha Akuraju and Wable Pawan and Budama Nagaraju and Singh Ramesh }, url = {http://idc.icrisat.org/idc/wp-content/uploads/2022/01/1-2022_CATENA.pdf}, year = {2021}, date = {2021-12-28}, journal = {CATENA}, volume = {211}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Impact of agricultural water management interventions on upstream–downstream trade-offs in the upper Cauvery catchment, southern India: a modelling study. Pawan S.Wable, Kaushal K.Garg, Rajesh Nune, Akuraju Venkataradha, Anantha KH, Veena Srinivasan, Ragab Ragab, John Rowan, Virginie Keller, Pradeep Majumdar, Gwyn Rees, Ramesh Singh and Sreenath Dixit (2021): In: Irrigation and Drainage, 2021. (Type: Journal Article | Links | BibTeX) @article{Pawan2021, title = {Impact of agricultural water management interventions on upstream–downstream trade-offs in the upper Cauvery catchment, southern India: a modelling study}, author = {S.Wable Pawan and K.Garg Kaushal and Nune Rajesh and Venkataradha Akuraju and KH Anantha and Srinivasan Veena and Ragab Ragab and Rowan John and Keller Virginie and Majumdar Pradeep and Rees Gwyn and Singh Ramesh and Dixit Sreenath}, url = {https://onlinelibrary.wiley.com/doi/10.1002/ird.2662}, doi = {https://doi.org/10.1002/ird.2662}, year = {2021}, date = {2021-11-29}, journal = {Irrigation and Drainage}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
A comprehensive assessment framework for attributing trends in streamflow and groundwater storage to climatic and anthropogenic changes: A case study in the typical semi‐arid catchments of southern India. Rajesh Nune, George BA, Western AW, Kaushal K.Garg, Sreenath Dixit and Ragab Ragab (2021): In: Hydrological Processes (TSI), 35 (8), pp. 1-17, 2021, ISSN: 0885-6087. (Type: Journal Article | Abstract | Links | BibTeX) @article{Nune2021, title = {A comprehensive assessment framework for attributing trends in streamflow and groundwater storage to climatic and anthropogenic changes: A case study in the typical semi‐arid catchments of southern India}, author = { Nune Rajesh and BA George and AW Western and K.Garg Kaushal and Dixit Sreenath and Ragab Ragab}, url = {http://oar.icrisat.org/11883/}, issn = {0885-6087}, year = {2021}, date = {2021-08-26}, journal = {Hydrological Processes (TSI)}, volume = {35}, number = {8}, pages = {1-17}, abstract = {The clearest signs of hydrologic change can be observed from the trends in streamflow and groundwater levels in a catchment. During 1980–2007, significant declines in streamflow (-3.03 mm/year) and groundwater levels (-0.22 m/year) were observed in Himayat Sagar (HS) catchment, India. We examined the degree to which hydrologic changes observed in the HS catchment can be attributed to various internal and external drivers of change (climatic and anthropogenic changes). This study used an investigative approach to attribute hydrologic changes. First, it involves to develop a model and test its ability to predict hydrologic trends in a catchment that has undergone significant changes. Second, it examines the relative importance of different causes of change on the hydrologic response. The analysis was carried out using Modified Soil and Water Assessment Tool (SWAT), a semidistributed rainfall-runoff model coupled with a lumped groundwater model for each sub- catchment. The model results indicated that the decline in potential evapotranspiration (PET) appears to be partially offset by a significant response to changes in rainfall. Measures that enhance recharge, such as watershed hydrological structures, have had limited success in terms of reducing impacts on the catchment-scale water balance. Groundwater storage has declined at a rate of 5 mm/y due to impact of land use changes and this was replaced by a net addition of 2 mm/y by hydrological structures. The impact of land use change on streamflow is an order of magnitude larger than the impact of hydrological structures and about is 2.5 times higher in terms of groundwater impact. Model results indicate that both exogenous and endogenous changes can have large impacts on catchment hydrology and should be considered together. The proposed comprehensive framework and approach demonstrated here is valuable in attributing trends in streamflow and groundwater levels to catchment climatic and anthropogenic changes.}, keywords = {}, pubstate = {published}, tppubtype = {article} } The clearest signs of hydrologic change can be observed from the trends in streamflow and groundwater levels in a catchment. During 1980–2007, significant declines in streamflow (-3.03 mm/year) and groundwater levels (-0.22 m/year) were observed in Himayat Sagar (HS) catchment, India. We examined the degree to which hydrologic changes observed in the HS catchment can be attributed to various internal and external drivers of change (climatic and anthropogenic changes). This study used an investigative approach to attribute hydrologic changes. First, it involves to develop a model and test its ability to predict hydrologic trends in a catchment that has undergone significant changes. Second, it examines the relative importance of different causes of change on the hydrologic response. The analysis was carried out using Modified Soil and Water Assessment Tool (SWAT), a semidistributed rainfall-runoff model coupled with a lumped groundwater model for each sub- catchment. The model results indicated that the decline in potential evapotranspiration (PET) appears to be partially offset by a significant response to changes in rainfall. Measures that enhance recharge, such as watershed hydrological structures, have had limited success in terms of reducing impacts on the catchment-scale water balance. Groundwater storage has declined at a rate of 5 mm/y due to impact of land use changes and this was replaced by a net addition of 2 mm/y by hydrological structures. The impact of land use change on streamflow is an order of magnitude larger than the impact of hydrological structures and about is 2.5 times higher in terms of groundwater impact. Model results indicate that both exogenous and endogenous changes can have large impacts on catchment hydrology and should be considered together. The proposed comprehensive framework and approach demonstrated here is valuable in attributing trends in streamflow and groundwater levels to catchment climatic and anthropogenic changes. |
2020 |
Impact of land use changes and management practices on groundwater resources in Kolar district, Southern India. Kaushal K.Garg, Anantha KH, Rajesh Nune, Venkataradha Akuraju, Pushpraj Singh, G.Murali Krishna, Sreenath Dixit and Ragab Ragab (2020): In: Journal of Hydrology: Regional Studies , 2020. (Type: Journal Article | Links | BibTeX) @article{Garg2020b, title = {Impact of land use changes and management practices on groundwater resources in Kolar district, Southern India}, author = {K.Garg Kaushal and KH Anantha and Nune Rajesh and Akuraju Venkataradha and Singh Pushpraj and Krishna G.Murali and Dixit Sreenath and Ragab Ragab }, url = {http://idc.icrisat.org/idc/wp-content/uploads/2021/01/Garg-et-al-2020_Kolar-1.pdf}, doi = {https://doi.org/10.1016/j.ejrh.2020.100732}, year = {2020}, date = {2020-08-17}, journal = {Journal of Hydrology: Regional Studies }, keywords = {}, pubstate = {published}, tppubtype = {article} } |
2019 |
Zero Budget Natural Farming - An empirical analysis. D.Moses Shyam, Sreenath Dixit, Rajesh Nune, Gajanan Sawargaonkar and Girish Chander (2019): In: Green Farming, 10 (6), pp. 661-667, 2019. (Type: Journal Article | Links | BibTeX) @article{D.Moses2019, title = {Zero Budget Natural Farming - An empirical analysis}, author = {Shyam D.Moses and Dixit Sreenath and Nune Rajesh and Sawargaonkar Gajanan and Chander Girish}, url = {http://idc.icrisat.org/idc/wp-content/uploads/2021/10/ZBNFPaper.pdf}, year = {2019}, date = {2019-12-30}, journal = {Green Farming}, volume = {10}, number = {6}, pages = {661-667}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
2018 |
Improving Livelihoods through Watershed Interventions: A Case Study of SABMiller India Project. Rajesh Nune, CH Srinivasa Rao, R Sudi, SP Wani, Kaushal K.Garg and DS Prasad Rao (2018): In: Corporate Social Responsibility: Win-win Propositions for Communities, Corporates and Agriculture, pp. 83-101, CABI, 2018, ISBN: 9781786394514. (Type: Book Chapter | Links | BibTeX) @inbook{R2018b, title = {Improving Livelihoods through Watershed Interventions: A Case Study of SABMiller India Project}, author = {Nune Rajesh and Srinivasa Rao CH and Sudi R and Wani SP and K.Garg Kaushal and Prasad Rao DS}, url = {http://oar.icrisat.org/10946/}, isbn = {9781786394514}, year = {2018}, date = {2018-11-21}, booktitle = {Corporate Social Responsibility: Win-win Propositions for Communities, Corporates and Agriculture}, pages = {83-101}, publisher = {CABI}, keywords = {}, pubstate = {published}, tppubtype = {inbook} } |
Improved Livelihoods - A Case Study from Asian Paints Limited. MD Patil, SP Wani, KK Garg and R Nune (2018): In: Corporate Social Responsibility: Win-win Propositions for Communities, Corporates and Agriculture, pp. 102-118, CABI, 2018, ISBN: 9781786394514. (Type: Book Chapter | Links | BibTeX) @inbook{MD2018, title = {Improved Livelihoods - A Case Study from Asian Paints Limited}, author = {Patil MD and Wani SP and Garg KK and Nune R }, url = {http://oar.icrisat.org/10947/}, isbn = {9781786394514}, year = {2018}, date = {2018-11-01}, booktitle = {Corporate Social Responsibility: Win-win Propositions for Communities, Corporates and Agriculture}, pages = {102-118}, publisher = {CABI}, keywords = {}, pubstate = {published}, tppubtype = {inbook} } |
2014 |
Relating trends in streamflow to anthropogenic influences: A case study of Himayat Sagar catchment, India. Rajesh Nune, Biju George, Pardhasaradhi Teluguntla and Western Andrew (2014): In: Water Resources Management, 28 (6), pp. 1579-1595, 2014, ISSN: 1573-1650. (Type: Journal Article | Abstract | Links | BibTeX) @article{b, title = {Relating trends in streamflow to anthropogenic influences: A case study of Himayat Sagar catchment, India}, author = {Nune Rajesh and George Biju and Teluguntla Pardhasaradhi and Andrew Western}, url = {http://dx.doi.org/10.1007/s11269-014-0567-5}, doi = {10.1007/s11269-014-0567-5}, issn = {1573-1650}, year = {2014}, date = {2014-01-01}, journal = {Water Resources Management}, volume = {28}, number = {6}, pages = {1579-1595}, publisher = {Springer Netherlands}, abstract = {Catchment development has been identified as a potentially major cause of streamflow change in many river basins in India. This research aims to understand changes in the Himayat Sagar catchment (HSC), India, where significant reductions in streamflow have been observed. Rainfall and streamflow trend analysis for 1980–2004 shows a decline in streamflow without significant changes in rainfall. A regression model was used to quantify changes in the rainfall-runoff relationship over the study period. We relate these streamflow trends to anthropogenic changes in land use, groundwater abstraction and watershed development that lead to increased ET (Evapotranspiration) in the catchment. Streamflow has declined at a rate of 3.6 mm/y. Various estimates of changes in evapotranspiration/irrigation water use were made. Well inventories suggested an increase of 7.2 mm/y in groundwater extractions whereas typical irrigation practices suggests applied water increased by 9.0 mm/y, while estimates of evapotranspiration using remote sensing data showed an increasing rate of 4.1 mm/y. Surface water storage capacity of various small watershed development structures increased by 2 mm over 7 years. It is concluded that the dominant hydrological process responsible for streamflow reduction is the increase in evapotranspiration associated with irrigation development, however, most of the anthropogenic changes examined are interrelated and occurred simultaneously, making separating out individual impacts very difficult.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Catchment development has been identified as a potentially major cause of streamflow change in many river basins in India. This research aims to understand changes in the Himayat Sagar catchment (HSC), India, where significant reductions in streamflow have been observed. Rainfall and streamflow trend analysis for 1980–2004 shows a decline in streamflow without significant changes in rainfall. A regression model was used to quantify changes in the rainfall-runoff relationship over the study period. We relate these streamflow trends to anthropogenic changes in land use, groundwater abstraction and watershed development that lead to increased ET (Evapotranspiration) in the catchment. Streamflow has declined at a rate of 3.6 mm/y. Various estimates of changes in evapotranspiration/irrigation water use were made. Well inventories suggested an increase of 7.2 mm/y in groundwater extractions whereas typical irrigation practices suggests applied water increased by 9.0 mm/y, while estimates of evapotranspiration using remote sensing data showed an increasing rate of 4.1 mm/y. Surface water storage capacity of various small watershed development structures increased by 2 mm over 7 years. It is concluded that the dominant hydrological process responsible for streamflow reduction is the increase in evapotranspiration associated with irrigation development, however, most of the anthropogenic changes examined are interrelated and occurred simultaneously, making separating out individual impacts very difficult. |
2013 |
An assessment of climatic change impacts on streamflows in the Musi catchment, India. Rajesh Nune, B George, H Malano, B Nawarathna, B Davidson and D Ryu (2013): 20th International Congress on Modelling and Simulation, Adelaide, Australia, 2013. (Type: Conference | Links | BibTeX) @conference{Nune2013, title = {An assessment of climatic change impacts on streamflows in the Musi catchment, India}, author = {Nune Rajesh and George B and Malano H and Nawarathna B and Davidson B and Ryu D}, url = {http://www.mssanz.org.au/modsim2013/L2/nune.pdf}, year = {2013}, date = {2013-12-01}, booktitle = {20th International Congress on Modelling and Simulation, Adelaide}, address = {Australia}, keywords = {}, pubstate = {published}, tppubtype = {conference} } |
Estimation and analysis of return flows: Case study. B Venkateswara Rao, Vajja Varalakshmi, Rajesh Nune and A Gaur (2013): In: Journal of Hydrologic Engineering, 18 (10), pp. 1282-1288, 2013. (Type: Journal Article | Abstract | Links | BibTeX) @article{doi:10.1061/(ASCE)HE.1943-5584.0000736, title = {Estimation and analysis of return flows: Case study}, author = {Venkateswara Rao B and Varalakshmi Vajja and Nune Rajesh and Gaur A}, url = {http://dx.doi.org/10.1061/(ASCE)HE.1943-5584.0000736}, doi = {10.1061/(ASCE)HE.1943-5584.0000736}, year = {2013}, date = {2013-01-01}, journal = {Journal of Hydrologic Engineering}, volume = {18}, number = {10}, pages = {1282-1288}, abstract = {Return flows from irrigation form an important component in the overall management of water in a basin. The Nagarjunasagar irrigation project is one of the biggest irrigation projects in India. At the Nagarjunasagar project formulation stage, the return flows were assumed to be 7.5% of the total water drawn into the command area (area irrigated under the canal), which could be approximately 538.08×106 m3. This paper aims to calculate the return flows from the Nagarjunasagar canal command areas. At present, the calculations are made during the period 1982–2004 by using multiple linear regression analysis. Return flows form 15% of the total releases from the canals for the whole study period. During wet, normal, and dry periods, return flows are 29, 20, and 10%, respectively. Similarly, they are 29 and 18% during the kharif (June–October) and rabi (October–February) seasons, respectively.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Return flows from irrigation form an important component in the overall management of water in a basin. The Nagarjunasagar irrigation project is one of the biggest irrigation projects in India. At the Nagarjunasagar project formulation stage, the return flows were assumed to be 7.5% of the total water drawn into the command area (area irrigated under the canal), which could be approximately 538.08×106 m3. This paper aims to calculate the return flows from the Nagarjunasagar canal command areas. At present, the calculations are made during the period 1982–2004 by using multiple linear regression analysis. Return flows form 15% of the total releases from the canals for the whole study period. During wet, normal, and dry periods, return flows are 29, 20, and 10%, respectively. Similarly, they are 29 and 18% during the kharif (June–October) and rabi (October–February) seasons, respectively. |
2011 |
Large scale groundwater withdrawal and its consequences on the closing of the upper Musi basin in India. B Venkateswara Rao, Nune Rajesh, MVS Rajesh and ST Vijaya Sarada (2011): In: International Journal of Water, 6 (1/2), pp. 15-28, 2011. (Type: Journal Article | Abstract | Links | BibTeX) @article{Rao2011, title = {Large scale groundwater withdrawal and its consequences on the closing of the upper Musi basin in India}, author = {Venkateswara Rao B and Rajesh Nune and Rajesh MVS and Vijaya Sarada ST }, url = {http://www.inderscience.com/info/inarticle.php?artid=43314}, doi = {10.1504/IJW.2011.043314}, year = {2011}, date = {2011-05-01}, journal = {International Journal of Water}, volume = {6}, number = {1/2}, pages = {15-28}, abstract = {The Musi basin is a sub-basin of the river Krishna in India. Data on ground water levels for 20 years (1985–2004) including the data of Digital Water Level Recorders (DWLR) is analysed to investigate the large scale ground water withdrawal and its affects on reducing the inflows reaching the downstream reservoirs in the basin. The investigations have revealed that the deeper the pre-monsoon ground water levels, the more the recharge to the ground water from the rainfall, consequently reducing the runoff from the basin resulting in the closer of the basin.}, keywords = {}, pubstate = {published}, tppubtype = {article} } The Musi basin is a sub-basin of the river Krishna in India. Data on ground water levels for 20 years (1985–2004) including the data of Digital Water Level Recorders (DWLR) is analysed to investigate the large scale ground water withdrawal and its affects on reducing the inflows reaching the downstream reservoirs in the basin. The investigations have revealed that the deeper the pre-monsoon ground water levels, the more the recharge to the ground water from the rainfall, consequently reducing the runoff from the basin resulting in the closer of the basin. |