scholarly journals Monitoring of environmental flow outcomes in a large river basin: The Commonwealth Environmental Water Holder's long‐term intervention in the Murray–Darling Basin, Australia

2019 ◽  
Vol 36 (4) ◽  
pp. 630-644 ◽  
Author(s):  
Ben Gawne ◽  
Jenni Hale ◽  
Michael J. Stewardson ◽  
James A. Webb ◽  
Darren S. Ryder ◽  
...  
Keyword(s):  
River Basin ◽  
Environmental Water ◽  
Large River ◽  
Environmental Flow ◽  
Murray Darling Basin

scholarly journals Supporting Sustainable Water Management: Insights from Australia’s Reform Journey and Future Directions for the Murray–Darling Basin

Water ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1649 ◽  
Author(s):  
Maureen Papas
Keyword(s):  
Water Management ◽  
Environmental Water ◽  
Decision Makers ◽  
Weather Extremes ◽  
Future Directions ◽  
Murray Darling Basin ◽  
Productivity Commission ◽  
The Government

Effective regulation of freshwater remains one of the biggest challenges facing our societies. In times of record-breaking weather extremes spurred by a changing climate, decision makers are increasingly aware of the need to formulate more effective governance to ensure the reliability, accessibility, and quality of this life-giving resource. In recent years, the Australian government has played a key role in water management. The government has managed a significant amount of water entitlements in the Murray–Darling Basin (MDB), through its Commonwealth Environmental Water Holder (CEWH) agency, in a bid to increase river flows and thus improve the river system’s environmental and ecological conditions. The CEWH is unique in many respects, and the Australian government’s control of its budget and actions is a critical aspect of the Basin’s sustainable long-term management. Despite the importance of this instrument, this article points out that there are serious issues with the current governance arrangements, such as inherent conflicts in the Murray–Darling Basin Authority’s (MDBA) role, which is a concern raised by the Productivity Commission. This article goes on to recommend the policy changes required to address Basin-wide issues and promote sustainable practices to ensure the MDB’s long-term resilience.

scholarly journals Hydrologic sensitivity of flood runoff and inundation: 2011 Thailand floods in the Chao Phraya River basin

2014 ◽  
Vol 2 (11) ◽  
pp. 7027-7059 ◽  
Author(s):  
T. Sayama ◽  
Y. Tatebe ◽  
Y. Iwami ◽  
S. Tanaka
Keyword(s):  
River Basin ◽  
Monsoon Rainfall ◽  
Flood Hazard ◽  
Large River ◽  
Economic Damage ◽  
Flood Inundation ◽  
Rainfall Runoff ◽  
Chao Phraya River ◽  
Large Floods

Abstract. Thailand floods in 2011 caused an unprecedented economic damage in the Chao Phraya River basin. To diagnose the flood hazard characteristics, this study analyzes the hydrologic sensitivity of flood runoff and inundation to rainfall. The motivation is to address why the seemingly insignificant monsoon rainfall, or 1.2 times more rainfall than past large floods including the ones in 1995 and 2006, resulted in such a devastating flooding. To quantify the hydrologic sensitivity, this study simulated a long-term rainfall-runoff and inundation for the entire river basin (160 000 km2). The simulation suggested that the flood inundation volume in 2011 was 1.6 times more than past flood events. Furthermore the elasticity index suggested that 1% increase in rainfall causes 2.3% increase in runoff and 4.2% increase in flood inundation. This study highlights the importance of sensitivity quantification for better understanding of flood hazard characteristics; and the presented approach is effective for the analysis at large river basins.

scholarly journals Evaluation of low-flow metrics as environmental instream flow standards during long-term average and 2016 drought conditions: Tombigbee River Basin, Alabama and Mississippi, USA

Water Policy ◽  
2018 ◽  
Vol 20 (6) ◽  
pp. 1240-1255 ◽  
Author(s):  
Sarah Praskievicz ◽  
Cehong Luo ◽  
Bennett Bearden ◽  
Andrew Ernest
Keyword(s):  
River Basin ◽  
Environmental Flow ◽  
Low Flow ◽  
Instream Flow ◽  
Management Actions ◽  
Instream Flows ◽  
Societal Needs ◽  
Drought Conditions ◽  
Historical Flow

Abstract Environmental instream flows are a common tool for maintaining river flows that are required to sustain both ecosystem and societal needs. Many of the most widely adopted environmental flow standards are based on historical flow, mainly because of the relative simplicity of these methods. Few previous studies, however, have examined the ability of historical flow standards to protect low flows. Here, the low-flow protective ability of five different historical flow methods, using 35 gaging stations in the Tombigbee River Basin of Alabama and Mississippi, was analyzed. The minimum environmental flow thresholds were calculated using the five indices, and the number of times in a recent 32-year period flows fell below each threshold was determined. The Tennant-based threshold was reached most frequently, followed by the modified Tennant. Although other low-flow metrics, such as 7Q10, were triggered infrequently (9% of the time) over the whole period, triggering rates increased to 46% for 7Q10 during the drought of 2016, suggesting that even minimal low-flow standards may provide some benefit during drought. Analyzing historical flow methods to see how often they would result in management actions if implemented is a useful way of developing guidance on the adoption of minimum environmental instream flow standards.

Socioeconomic Challenges faced by Basin’s People in India

Think India ◽  
2019 ◽  
Vol 22 (2) ◽  
pp. 296-304
Author(s):  
Biplab Tripathy ◽  
Tanmoy Mondal
Keyword(s):  
River Basin ◽  
High Tide ◽  
North East ◽  
The People ◽  
Term Basis ◽  
Major River ◽  
River Ganga ◽  
Basin Region ◽  
Basin Area

India is a subcontinent, there huge no of people lived in river basin area. In India there more or less 80% of people directly or indirectly depend on River. Ganga, Brahamputra in North and North East and Mahanadi, Govabori, Krishna, Kaveri, Narmoda, Tapti, Mahi in South are the major river basin in India. There each year due to flood and high tide lots of people are suffered in river basin region in India. These problems destroy the socio economic peace and hope of the people in river basin. There peoples are continuously suffered by lots of difficulties in sort or in long term basis. Few basin regions are always in high alert at the time of monsoon seasons. Sometime due to over migration from basin area, it becomes empty and creates an ultimate loss of resources in India and causes a dis-balance situation in this area.

scholarly journals Capturing transformation of flood hazard over a large River Basin under changing climate using a top-down approach

2020 ◽  
Vol 726 ◽  
pp. 138600 ◽  
Author(s):  
A. Gusain ◽  
M.P. Mohanty ◽  
S. Ghosh ◽  
C. Chatterjee ◽  
S. Karmakar
Keyword(s):  
River Basin ◽  
Flood Hazard ◽  
Large River ◽  
Top Down ◽  
Changing Climate
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