scholarly journals Temporal variability and time compression of sediment yield in small Mediterranean catchments: impacts for land and water management

2018 ◽  
Vol 34 (3) ◽  
pp. 388-403 ◽  
Author(s):  
A. Smetanová ◽  
Y. Le Bissonnais ◽  
D. Raclot ◽  
J. Pedro Nunes ◽  
F. Licciardello ◽  
...  
Keyword(s):  
Water Management ◽  
Sediment Yield ◽  
Temporal Variability ◽  
Time Compression ◽  
Land And Water Management

scholarly journals Sediment Yield and Reservoir Sedimentation in Highly Dynamic Watersheds: The Case of Koga Reservoir, Ethiopia

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3374
Author(s):  
Gebiaw T. Ayele ◽  
Alban Kuriqi ◽  
Mengistu A. Jemberrie ◽  
Sheila M. Saia ◽  
Ayalkibet M. Seka ◽  
...  
Keyword(s):  
Water Management ◽  
Land Use ◽  
Sediment Yield ◽  
Management Practices ◽  
Sediment Load ◽  
Reservoir Sedimentation ◽  
Rating Curve ◽  
Management Decisions ◽  
Management Interventions ◽  
Land And Water Management

Soil erosion is exacerbated by unsustainable land-use activities and poor management practices, undermining reservoir storage capacity. To this effect, appropriate estimation of sediment would help to adopt sustainable land-use activities and best management practices that lead to efficient reservoir operations. This paper aims to investigate the spatial variability of sediment yield, amount of sediment delivery into the reservoir, and reservoir sedimentation in the Koga Reservoir using the Soil and Water Assessment Tool (SWAT). Sediment yield and the amount entered into the reservoir were also estimated using a rating curve, providing an alternative approach to spatially referenced SWAT generated suspended sediment load. SWAT was calibrated from 1991 to 2000 and validated from 2002 to 2007 using monthly observations. Model performance indicators showed acceptable values using Nash-Sutcliffe efficiency (NSE) correlation coefficient (R2), and percent bias (PBIAS) for flow (NSE = 0.75, R2 = 0.78, and PBIAS = 11.83%). There was also good agreement between measured and simulated sediment yields, with NSE, R2, and PBIAS validation values of 0.80, 0.79, and 6.4%, respectively. The measured rating curve and SWAT predictions showed comparable mean annual sediment values of 62,610.08 ton/yr and 58,012.87 ton/yr, respectively. This study provides an implication for the extent of management interventions required to meet sediment load targets to a receiving reservoir, providing a better understanding of catchment processes and responses to anthropogenic and natural stressors in mixed land use temperate climate catchments. Findings would benefit policymakers towards land and water management decisions and serve as a prototype for other catchments where management interventions may be implemented. Specifically, validating SWAT for the Koga Reservoir is a first step to support policymakers, who are faced with implementing land and water management decisions.

scholarly journals Developments in rural areas in relation with developments in land and water management research in the Netherlands. I. Economic development and rural development plans.

1983 ◽  
Vol 31 (2) ◽  
pp. 125-135
Author(s):  
C. Bijkerk ◽  
C.G.J. Van Oostrom
Keyword(s):  
Water Management ◽  
The Netherlands ◽  
Rural Areas ◽  
Development Process ◽  
Production Volume ◽  
Management Research ◽  
Agricultural Engineering ◽  
Land And Water Management ◽  
Development Plans ◽  
The Cost

Since 1900 seven successive stages can be distinguished in the development of agricultural engineering and in land and water management research in the Netherlands. The development process is traced from the introduction of fertilizers during 1900-1930, through mechanisation, improvement of water management and land accessibility, and increase in the size and specialisation of units, to increasing emphasis on the ecological and recreational value of land. The main features of economical development in agriculture after 1945 are disucssed, including changes in production volume, structure and costs, labour input and productivity, and the cost of wages. The influence of land and water management projects on the rise in agricultural productivity is considered, together with the present policy of selective growth. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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