Impacts of climate change on streamflow and sediment concentration under RCP 4.5 and 8.5: A case study in Purna river basin, India

Nilawar, Aditya P.; Waikar, Milind L.

doi:10.1016/j.scitotenv.2018.09.334

Cited by 114 publications

(48 citation statements)

References 46 publications

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“…These number indicates the increment of erosion over the watershed which triggered by the change in the climate element especially precipitation. The increment of erosion due to different RCP projection is in line with the result of the study conducted by Nilawar and Waikar (2019). They found that the sediment supply in the Purna river basin, India under RCP 8.5 is increased by about 5% compared to sediment supply under RCP 4.5.…”

Section: Reservoir Sedimentationsupporting

confidence: 79%

Impact Evaluation of Future Climate and Land Use Scenarios on Water and Sediment Regime using Distributed Hydrological Modelling in a Tropical Rainforest Catchment in West Java (Indonesia)

Siswanto¹

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Climate change has occurred in Indonesia, for example, increasing the surface air temperature, including in the Upper Citarum watershed. This phenomenon leads to a lack of water in the dry season, which lowers agriculture production and remains a great obstacle for agricultural activity. Meanwhile, human activity has produced severe LULC changes within the Upper Citarum watershed. This occurs due to the demands of the ever-increasing population growth in the region. As a result, rice field and forested areas have been sacrificed to compensate the urban increment. The general objective of this dissertation is to understand and analyze the impact of climate and LULC changes on the hydrological process and their relationship with historical and future changes by using spatially distributed modeling on the Upper Citarum tropical catchment. The distributed model TETIS has been implemented to obtain the results of past and future scenarios on the water and sediment cycles. Annual historical bathymetries in the reservoir were used to calibrate and validate the sediment sub-model involving Miller's density evolution and trap efficiency of Brune's equation. Climate change has been considered under RCP 4.5 and RCP 8.5 trajectories. Meanwhile, to overcome the LULC problem, historical and future LULCs have been studied. LCM model was used to forecast the LULC in 2029. The forecasted results of LCM model show, on one hand, a continuation in the expansion of urban areas at the expense of the contiguous rice fields. The results determined that deforestation and urbanization were the most influential factors for the alteration of the hydrological and sedimentological processes in the Upper Citarum Catchment. Thus, it decreases evapotranspiration, increases water yield by increasing all its components; overland flow, interflow and baseflow. The changes in LULC are currently producing and will produce in the future, a relatively small increment of erosion rates, increasing the area exceeds Tsl erosion. Sediment yield will increase in 2029 as the result of erosion increment. Other LULC scenarios such as conservation, government plan and natural vegetation scenarios are expected to have an increment in total evapotranspiration, the water yield is expected to decrease. Flood regime, erosion and sedimentation are reduced dramatically. Hence, it leads to a massive increment of reservoir and hydropower lifetime signed by a very long period of the lifetime. Climate change alters the magnitude of water balance and can be identified from the shift of infiltration, overland flow, interflow, baseflow and water yield. Those increments finally change the flood regime, catchment erosion. RCP 8.5 trajectory gives a bigger impact compared to RCP 4.5 trajectory on hydrological and sediment cycle.. LULC change results a bigger impact on water balance, flood regime, erosion and sedimentation. The combination of climate and LULC change give a bigger impact on the flows of water balance, erosion, flood, sedimentation and will be catastrophic for the h...

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Section: Reservoir Sedimentationsupporting

confidence: 79%

Impact Evaluation of Future Climate and Land Use Scenarios on Water and Sediment Regime using Distributed Hydrological Modelling in a Tropical Rainforest Catchment in West Java (Indonesia)

Siswanto¹

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“…Natalja cerkasova et al(2018) developed hydrology and water quality model for Nemunas large transboundaries watershed using SWAT, they used customized MATLAB scripts for HRU (hydrologic response unit) production also assessed SWAT model setup approaches for HRU definitions [9]. Aditya Nilawar and Milind Waikar (2019) the study demonstrated sensitivity of watershed hydrology to soil [1]. Cesar Perez-validivia et al (2017) investigated potential impact wetland drainage on hydrology i.e peak flow, annual volume of Pipestone creek watershed in cannada using SWAT [3].…”

Section: Literature Reviewmentioning

confidence: 99%

Estimation of Water Balance Components of Watersheds in the Manjira River Basin using SWAT Model and GIS

Mestry¹,

Narwade²,

Nagarajan³

2020

IJEAT

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This study mainly focus on hydrological behavior of watersheds in The Manjira River basin using soil and water assessment tool (SWAT) and Geographical information system (GIS). The water balance components for watersheds in the Manjira River were determined by using SWAT model and GIS. Determination of these water balance components helps to study direct and indirect factors affecting characteristics of selected watersheds. Manjira River contains total 28 watersheds among them 2 were selected having watershed code as MNJR008 and MNJR011 specified by the Central Ground Water Board. The SWAT input data such as Digital elevation model (DEM), land use and land cover (LU/LC), Soil classification, slope and weather data was collected. Using these inputs in SWAT the different water balancing components such as rainfall, baseflow, surface runoff, evapotranspiration (ET), potential evapotranspiration (PET) and water yield for each watershed were determined. The evaluated data is then validated by Regression analysis, in which two datasets were compared. Simulated rain data from SWAT simulation and observed rain data from Global Weather Data for SWAT was selected for comparison for each watershed.

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“…The SWAT model is a semi-distributed hydrological model that was developed by the United States Department of Agriculture-Agricultural Research Service (USDA-ARS) in the 1990s [35,69,70]. This model has been used worldwide for analyses of the impacts of land management and climate on hydrology [36,37,71,72]. The simulation of the ARB using the SWAT model was run with a monthly time step from 1980 to 2013.…”

Section: Hydrological Modelingmentioning

confidence: 99%

Impacts of Climate and Land-Use Changes on the Hydrological Processes in the Amur River Basin

Zhou

Zhang

Guo

2019

Water

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Under the joint effects resulted from different changes of climate and land-use regimes, spatial-temporal variations of hydrological processes took place in certain principles. Identifying the impact of changes in individual land-use types/climatic factors on hydrological processes is significant for water management and sustainability of watersheds. In this study, seven simulation scenarios were developed using the soil and water assessment tool (SWAT) model to distinguish the impacts of climate and land-use changes on the hydrological processes in the Amur River Basin (ARB) for four periods of 1980–1990, 1991–1999, 2000–2006, and 2007–2013, respectively. Based on the multi-period simulation scenario data, partial least squares regression and ridge regression analyses were performed to further evaluate the effects of changes in individual land-use types/climatic factors on hydrologic components. The results suggested that summer precipitation and summer average temperature were the dominant climatic factors, and crops and wetlands were the principal land-use types contributing to the hydrological responses. In addition, the drastic changes in crop and wetland areas and a clear decline in summer precipitation between the periods of 1991–1999 and 2000–2006 may account for the highest-intensity impacts of climate and land-use changes on the runoff at the outlet (−31.38% and 16.17%, respectively) during the four periods.

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Impacts of climate change on streamflow and sediment concentration under RCP 4.5 and 8.5: A case study in Purna river basin, India

Cited by 114 publications

References 46 publications

Impact Evaluation of Future Climate and Land Use Scenarios on Water and Sediment Regime using Distributed Hydrological Modelling in a Tropical Rainforest Catchment in West Java (Indonesia)

Impact Evaluation of Future Climate and Land Use Scenarios on Water and Sediment Regime using Distributed Hydrological Modelling in a Tropical Rainforest Catchment in West Java (Indonesia)

Estimation of Water Balance Components of Watersheds in the Manjira River Basin using SWAT Model and GIS

Impacts of Climate and Land-Use Changes on the Hydrological Processes in the Amur River Basin

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