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Author : Guido D'Urso
Publisher :
ISBN 13 : 9789058083999
Total Pages : 173 pages
Book Rating : 4.0/5 (839 download)
Download or read book Simulation and Management of On-demand Irrigation Systems written by Guido D'Urso and published by . This book was released on 2001* with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Juan Antonio Rodríguez Díaz
Publisher : MDPI
ISBN 13 : 3039287907
Total Pages : 204 pages
Book Rating : 4.0/5 (392 download)
Download or read book Modelling and Management of Irrigation System written by Juan Antonio Rodríguez Díaz and published by MDPI. This book was released on 2020-04-30 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Irrigation is becoming an activity of precision, where combining information collected from various sources is necessary to optimally manage resources. New management strategies, such as big data techniques, sensors, artificial intelligence, unmanned aerial vehicles (UAV), and new technologies in general, are becoming more relevant every day. As such, modeling techniques, both at the water distribution network and the farm levels, will be essential to gather information from various sources and offer useful recommendations for decision-making processes. In this book, 10 high quality papers were selected that cover a wide range of issues that are relevant to the different aspects related to irrigation management: water source and distribution network, plot irrigation systems, and crop water management.
Author : Daniele Simone Alessio Zaccaria
Publisher :
ISBN 13 :
Total Pages : 191 pages
Book Rating : 4.:/5 (754 download)
Download or read book A Methodology to Conduct Diagnostic Performance Assessment and Simulation of Deliveries in Large-scale Pressurized Irrigation Systems written by Daniele Simone Alessio Zaccaria and published by . This book was released on 2011 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: A methodology was developed to conduct diagnostic performance assessment and simulation of alternative delivery scenarios in pressurized irrigation distribution networks. It consists of three components, an agro-hydrologic model able to forecast peak water demand hydrographs, a hydraulic model with capability of simulating the network behavior under different flow configurations, and a set of performance indicators for conducting assessments of performance achievements relative to specified targets. As a preliminary work, the current delivery schedule of an existing pressurized irrigation network (system 1) and the resulting effects on crop irrigation management were analyzed by simulating soil water balance and irrigation scheduling at field level. Simulations allowed analyzing the on-farm irrigation management under the current rotation deliveries, and comparing it with an alternative flexible irrigation scheduling to maximize crop yields. Results at field level were up-scaled to the entire command area of the system, showing the usefulness of soil water balance and of irrigation scheduling as analytical tools to demonstrate the inconsistency between the current water delivery and crops' and farmers' requirements. This preliminary work also allowed highlighting the need for modernizing the irrigation management in the first of the two study areas considered for the present research work (system 1 located in the province of Taranto, southern Italy). An existing agro-hydrological model conceived to forecast water demand hydrographs in pressurized delivery networks was enhanced through several refinements and amendments of the computation algorithms. The refined model was applied for validation at different management levels on an existing pressurized irrigation system (system 2) located in the province of Foggia, southern Italy, where water withdrawals by farmers and the main hydraulic parameters are recorded on a continuous basis for monitoring purposes. Results from validation showed that the model is capable of forecasting with good accuracy the timing of peak-demand periods, the seasonal demand irrigation volumes, as well as the hydrographs of hourly flow rates demanded by farmers during these peak periods, especially when it is applied to large multi-cropped command areas. Performance indicators, originally conceived for diagnostic assessment in canal systems, were modified for application to pressurized distribution networks, and reference standard values were proposed. These indicators were then applied for validation to the second study area (irrigation system 2), where records of water deliveries are available, and showed their usefulness for diagnostic performance assessments. Finally, the proposed methodology for diagnostic assessment and simulation of deliveries was applied to two tail-end districts of the first study area (irrigation system 1) and enabled the analysis of networks performances under different flow configurations. This application showed the usefulness of the combined analysis and simulation tools for addressing physical and operational aspects of modernization of poor performing delivery networks.
Author : Daene C. McKinney
Publisher : IWMI
ISBN 13 : 9290903767
Total Pages : 71 pages
Book Rating : 4.2/5 (99 download)
Download or read book Modeling Water Resources Management at the Basin Level written by Daene C. McKinney and published by IWMI. This book was released on 1999 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world is facing severe and growing challenges in maintainig water quality and meeting the rapidly growing demand for water resources. In addition, water used for irrigation, the largest use of water in most developing countries, will likely have to be diverted increasingly to meet the needs of urban areas and industry whilst remaining a prime engine of agricultural growth. Finally, environmental and other in-stream water demands become more important as economies develop. The river basin has been acknowledged to be the appropriate unit of analysis to address these chanllenges facing water resources management: and modeling at this scale can provide essential information for policy makers in their decisions on allication of resources. This paper reviews the state of the art of modeling approaches to integrated water resources management at the river basin scale, with particular focus on the potential of coupled economic hydrologic models, and concludes with directions for future modeling exercises.
Author : Giuseppe Rossi
Publisher : Springer Science & Business Media
ISBN 13 : 9781402011405
Total Pages : 376 pages
Book Rating : 4.0/5 (114 download)
Download or read book Tools for Drought Mitigation in Mediterranean Regions written by Giuseppe Rossi and published by Springer Science & Business Media. This book was released on 2003 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing risk of severe droughts and water shortages emphasizes the need for an integrated approach to drought mitigation. However, effective tools for the implementation of such an approach have not been available till now. This book contributes to an improved preparedness for drought in water supply systems, providing tools useful for a better decision making process in drought management. It presents methods and software features of a Decision Support System (DSS) developed within a European research project and consists of three main parts. The first part deals with the advanced techniques for hydrological drought identification and monitoring; the second analyses the successful use of climate-crop-soil models in defining deficit irrigation strategies; the third provides tools for improving the operation of irrigation supply reservoirs.
Author :
Publisher :
ISBN 13 :
Total Pages : 238 pages
Book Rating : 4.3/5 (121 download)
Download or read book Crop Calendar and Net Irrigation Water Use Model written by and published by . This book was released on 1991 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Raymond Lloyd Anderson
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (359 download)
Download or read book A Simulation of Irrigation Systems written by Raymond Lloyd Anderson and published by . This book was released on 1971 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Walter Joseph Rachel Buydens
Publisher :
ISBN 13 :
Total Pages : 716 pages
Book Rating : 4.E/5 ( download)
Download or read book Irrigation Management Optimization Incorporating Equity and Crop Simulation written by Walter Joseph Rachel Buydens and published by . This book was released on 1992 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Giulio Lorenzini
Publisher : WIT Press
ISBN 13 : 1845640438
Total Pages : 417 pages
Book Rating : 4.8/5 (456 download)
Download or read book Sustainable Irrigation Management, Technologies and Policies written by Giulio Lorenzini and published by WIT Press. This book was released on 2006 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fresh water is becoming an ever increasingly precious commodity, control of which could lead in the near future to the type of political instability now associated with energy shortages. This book addresses the different aspects of irrigation, including not only the management of water resources and scientific and technical aspects, but also matters related to policy and economics, researchers in academia and industry as well as professional practitioners and policy makers. Bringing together papers from the First International Conference on Sustainable Irrigation Management, Technologies and Policies, the book covers topics such as: Irrigation Controls; Irrigation Modelling; Irrigation Systems and Planning; Irrigation Management.
Author : Texas Water Development Board. Systems Engineering Division
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (31 download)
Download or read book Economic Optimization and Simulation Techniques for Management of Regional Water Resource Systems written by Texas Water Development Board. Systems Engineering Division and published by . This book was released on 1974 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roy Steiner
Publisher :
ISBN 13 :
Total Pages : 486 pages
Book Rating : 4.E/5 ( download)
Download or read book An Analysis of Water Distribution Strategies Using the Irrigation Land Management Simulation Model written by Roy Steiner and published by . This book was released on 1991 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : B. Albinson
Publisher : IWMI
ISBN 13 : 9290904712
Total Pages : 30 pages
Book Rating : 4.2/5 (99 download)
Download or read book Fundamentals of Smallholder Irrigation written by B. Albinson and published by IWMI. This book was released on 2002 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smallholder irrigation systems–where farm sizes generally range from a fraction of a hectare to 10 hectares–pose special management problems, especially where the water available for irrigation is frequently less than the demand. The intensity of system adjustments required to meet individual farmer demands, and the administrative complexity of measuring and accounting water deliveries have generally proven excessive when attempting to meet “on demand†schedules, resulting in chaos (often characterized by illegal tampering with infrastructure, and vast differences of water use intensity at different locations in the system). The alternative–provision of a simple service, based on proportional sharing of available supplies on the basis of landholdings–has been resilient for many years over vast areas. The approach is based on a clear delineation between the part of the irrigation system that is actively managed (at various flow rates and water levels) and the part of the system that operates either at full supply level (with proportional division of water down to the level at which farmers rotate among their individual farms), or is completely shut. This operational design is known as a “structured†system, and has well-defined hydraulic characteristics, simplifying operation and management, in turn allowing a clearer definition of water entitlements and the responsibilities of agency staff and farmers. The approach is particularly suited to areas where water is scarce and discipline is needed to ration water among users. An additional benefit, which has been demonstrated in modeling studies using a well–proven model relating to water and yield, is that the productivity of water (which is more important than the more traditional productivity of land when water is scarce) is substantially increased when deficit irrigation is practiced–a widely observed and predictable response to rationed water supplies. Structured systems are most suited where water is scarce, clear definition of water entitlements is needed, management capacity is limited, and investment resources are limited. The approach to determining critical aspects of a structured system design is described in this report.
Author : Saeid Eslamian
Publisher : CRC Press
ISBN 13 : 100086524X
Total Pages : 589 pages
Book Rating : 4.0/5 (8 download)
Download or read book Handbook of Irrigation Hydrology and Management written by Saeid Eslamian and published by CRC Press. This book was released on 2023-05-31 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ever-increasing population growth has caused a proportional increased demand for water, and existing water sources are depleting day by day. Moreover, with the impact of climate change, the rates of rainfall in many regions have experienced a higher degree of variability. In many cities, government utilities have been struggling to maintain sufficient water for the residents and other users. The Handbook of Irrigation Hydrology and Management: Irrigation Methods examines and analyzes irrigated ecosystems in which water storage, applications, or drainage volumes are artificially controlled in the landscape and the spatial domain of processes varies from micrometers to tens of kilometers, while the temporal domain spans from seconds to centuries. The continuum science of irrigation hydrology includes the surface, subsurface (unsaturated and groundwater systems), atmospheric, and plant subsystems. Further, the book addresses the best practices for various types of irrigation methods including pressure, smart, surface, and subsurface, and presents solutions for water scarcity and soil salinity in irrigation. Features: Offers water-saving strategies to increase the judicious use of scarce water resources Presents strategies to maximize agricultural yield per unit of water used for different regions Compares irrigation methods to offset changing weather patterns and impacts of climate change
Author : L. S. Pereira
Publisher : Purdue University Press
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.E/5 ( download)
Download or read book Crop-water-simulation Models in Practice written by L. S. Pereira and published by Purdue University Press. This book was released on 1995 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nicola Lamaddalena
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251044377
Total Pages : 156 pages
Book Rating : 4.0/5 (443 download)
Download or read book Performance Analysis of On-demand Pressurized Irrigation Systems written by Nicola Lamaddalena and published by Food & Agriculture Org.. This book was released on 2000 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the strong competition that is arising for water resources the modernisation of irrigation systems is becoming a critical issue. One of the alternatives to modernisation is the use of pressurised systems to replace part of the existing networks. This publication analyses the performance of pressurised irrigation systems operating on demand, and provides revised criteria for the design of such irrigation networks. For this purpose, new approaches and a computer program have been developed. The program has been tested in several field situations in the Mediterranean Basin and has demonstrated its usefulness not only by quickly identifying weak points in irrigation networks but also by identifying the power requirements of pumping stations needed to satisfy varying demand situations.
Author : E. De Nys
Publisher :
ISBN 13 :
Total Pages : 412 pages
Book Rating : 4.:/5 (71 download)
Download or read book Interaction Between Water Supply and Demand in Two Collective Irrigation Schemes in Nort-east Brazil. From Analysis of Management Processes to Modeling and Decision Support written by E. De Nys and published by . This book was released on 2004 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past three decades, public irrigation schemes have been exposed to a process of management transfer from the central government and the funding agencies to local entities such as water users. associations and districts. However, this management transfer has been in many cases poorly implemented. Frequently reported problems are: inappropriate design; poorly specified management functions; ineffective accountability; unclear ownership of the collective infrastructure; and a lack of support services for achieving the transfer of management with success. In the Petrolina-Juazeiro region in the Northeast of Brazil, the CODEVASF (Company for the Development of the VaIleys of the São Francisco and the Pamaíba Rivers) has started to graduaIly transfer the management of public irrigation schemes to districts or local management entities. The districts are responsible for every day management, but they also need to make strategic decisions that affect the sustainability (technical, financial, socio-economic, environmental) of the irrigation schemes in the long run. This dissertation was set up in the irrigation projects of Mandacaru and Maniçoba, to analyse the scheme management by the main intemal stakeholders (scheme manager versus farmers), as weIl as to support them to solve problems and to plan ahead. The research focused on the interaction between the scheme manager's water supply and the farmers' water demand, since it is the central function inside the irrigation scheme. The water demand and the supply are analysed from a planning perspective, throughout the life cycle of the irrigation scheme, from the assumptions for its initial design to the operational reality at present. The analysis has shown that the scheme manager has been facing several difficulties to adjust his plan of water supply to the evolution of the water demand. The main reasons for these difficulties are: low margin of manoeuvre in the initial design of the water supply; the scheme manager's poor insight in the diversity of the farmers and their water demand, which is related to the district's lack of planning and monitoring of the parameters that affect water demand; and low capacity of the district to fund the cost of major adjustments without public financial support. A simulation model was developed to support the stakeholders' reflections on altemative plans of the water supply and demand. The modelling of the collective water supply is limited to its main infrastructure and organizational parameters. The coIlective water demand is modeI\ed by using a farm typology that gives a simplified representation of the diversity of the farms in the irrigation scheme, as well as their water demands. The main output of the model is the coverage of the water demand by the water supply at scheme levei. The aim of the modelling approach was to provide support to stakeholders so that they can simulate and evaluate prospective scenarios of the water demand and alternative plans of the water supply, for example the possibility to increase the water supply by organizing water delivery to farmers at night. During both the analysis of management processes and the modelling phase, a discussion group composed of district staff, farmers' representatives and technical assistance was involved. The feedback of the discussion group, as well as their questions and evolving demands, has shown the interest of the approach to support the stakeholders' learning process in irrigation management, and to link different functions of scheme management. Indeed, the debates within the discussion groups have gone far beyond the strict scope of the water flow between the district and the farmers, to tackle strategic issues at the individual and the collective levels. ln this respect, analyses and modelling approaches were also undertaken to support on-farm irrigation management in relation to the risk of soil salinization, and to support the choice of a water tariff system. Further analysis of the real contribution of this type of decision support methods in the stakeholders' learning process of irrigation management needs to be undertaken on other case studies, so as to evaluate their real interest and transferability to other specific situations of irrigation scheme management.
Author : Margarito Coballes Escalante
Publisher :
ISBN 13 :
Total Pages : 504 pages
Book Rating : 4.:/5 (892 download)
Download or read book Irrigation Water Management by Simulation for a Diversion Irrigation System and Saturated Soil Conditions written by Margarito Coballes Escalante and published by . This book was released on 1982 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
