MCA on mechanism of river bed potholes growth: a study of middle Subarnarekha River basin, South East Asia

2017 ◽  
Vol 21 (2) ◽  
pp. 935-959 ◽  
Author(s):  
Md Kutubuddin Dhali ◽  
Mery Biswas
Keyword(s):  
East Asia ◽  
River Basin ◽  
South East Asia ◽  
River Bed ◽  
Subarnarekha River ◽  
Subarnarekha River Basin

scholarly journals Fluvial geochemistry of Subarnarekha River basin, India

2018 ◽  
Vol 127 (8) ◽  
Author(s):  
Abhay Kumar Singh ◽  
Soma Giri ◽  
Aaditya Chaturvedi
Keyword(s):  
River Basin ◽  
Subarnarekha River ◽  
Subarnarekha River Basin

scholarly journals Assessment of hydrological response in Subarnarekha river basin under anticipated climate change scenarios

2020 ◽  
Keyword(s):  
Climate Change ◽  
River Basin ◽  
General Circulation ◽  
Circulation Model ◽  
Climate Modelling ◽  
Climate Change Scenarios ◽  
Hydrological Response ◽  
Study Region ◽  
Subarnarekha River ◽  
Subarnarekha River Basin

<p>Two hydrological climate modelling techniques, general circulation model (GCM) and hypothetical climate change scenarios, were used to analyse the hydrological response to the anticipated climate change scenarios in the Subarnarekha river basin in Eastern India. Both models verified individually for the same river basin and a comparative performance of the models was evaluated to relate the two models for the near (2014-2040) period climate. The hydrological response under the anticipated climate change in the Subarnarekha river basin is well assessed by GCM under the RCP 8.5 scenarios compared to the RCPs 4.5. Results indicate GCM best suited over the hypothetical climate change scenarios as GCM has demonstrated their potential in accurately reproducing the past observed climatic changes. The strong performance of the hypothetical climate change scenarios model, particularly for warming climate scenarios, suggests that it may have distinct advantages for the analysis of water balance components in the river basin. The monthly streamflows of Subarnarekha river basin was simulated using a total of 14 years (2000-2013) daily observed streamflow data in the ArcSWAT model integrated with model calibration and uncertainty analysis by means of SUFI-2 algorithm. The results indicate during the calibration the coefficient of determination (R2) and Nash-Sutcliff Efficiency (NSE) were reported as 0.98 and 0.97, respectively, while during the validation the R2 and NSE were obtained as 0.94 and 0.94, respectively, confirms the hydrological model performance was very good both in calibration and validation. The obtained climate change water impact index (ICCWI) values reveal the Subarnarekha river basin is more responsive to climate change. The reduction in precipitation along with the significant warming under the projected future climate is likely to reduce availability of water substantially in the study region. This work would be useful for the effective management of water resources for sustainable agriculture and in mitigating natural hazards such as droughts and floods in the study region.</p>

scholarly journals Identifying Ecosystem Services for a Framework of Ecological Importance for Rivers in South East Asia

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1602
Author(s):  
Peter-John Meynell ◽  
Marc Metzger ◽  
Neil Stuart
Keyword(s):  
Ecosystem Services ◽  
Resource Management ◽  
East Asia ◽  
River Basin ◽  
Water Resource Management ◽  
South East Asia ◽  
River Ecosystem ◽  
Wide Range ◽  
Baseline Information ◽  
Ecological Importance

There are increasing concerns for the ecological health of rivers, and their ability to provide important ecosystem services. Frameworks describing the character and condition of rivers have been developed in many parts of the world but rarely include river ecosystem services. South East Asia is a region with some of the world’s great rivers—Mekong, Salween and Ayeyarwady—running through six different countries, but data on river ecological character and condition is patchy and inconsistent. Development pressures on these rivers has never been higher, and ecosystem services may be lost before being described and valued. The development of a framework of ecological importance is envisaged, which maps out the relative contributions of river reaches to a wide range of ecosystem services. This could be a tool for river basin planning and water resource management, baseline information for impact assessment of infrastructure (for example, hydropower and irrigation), and for protecting ecologically important areas. We asked a diverse group of 109 river basin planners, and water and natural resource management professionals in the region whether a framework of ecological importance would support their activities, and which river ecosystem services are most important to be assessed. Our findings allow prioritisation of river ecosystem services to be assessed and mapped according to importance in different river reaches and sub-basins within the region. The locations of ranked threats and pressures on the river systems allow indication of river health and integrity in these sub-basins. We consider the feasibility of measuring ecosystem services and pressures through the identification of appropriate indicators, methods, and availability of global, regional, and national data.

Environmental monitoring of water resources with the use of PoS index: a case study from Subarnarekha River basin, India

2018 ◽  
Vol 77 (3) ◽  
Author(s):  
Sandeep Kumar Gautam ◽  
Tziritis Evangelos ◽  
Sudhir Kumar Singh ◽  
Jayant Kumar Tripathi ◽  
Abhay Kumar Singh
Keyword(s):  
Water Resources ◽  
Environmental Monitoring ◽  
River Basin ◽  
Subarnarekha River ◽  
Subarnarekha River Basin
Sign in / Sign up

Export Citation Format

Share Document