Special Issue "Hydroeconomic Analysis for Sustainable Water Management"
Deadline for manuscript submissions: 31 August 2018
Assoc. Prof. Manuel Pulido-Velazquez
As a scarce resource, water often has economic value connected to its use. This value is employed in various use decisions, including irrigation, production proceses, sanitation, hydropower, recreation, and ecosystem services. However, water economic value often plays a decimated role in water management, even when water is reclaimed through costly storage and conveyance infrastructure, and shared among competing users. The common approach to water as an insdisputable requirement, rather than a variable and uncertain economic resource, fails to properly signal its scarcity to society, leading to inefficient use, unnecesarily large infrastructure, and lost development opportunities. Hydro-economic models provide a framework to respresent economic values of water under various uses, infrastructure, and hydrologic and environmental features within regions in a consistent manner This Special Issue provides an overview of economic water valuation and hydroeconomic models. Concepts are reinforced with case studies involving management, modeling, and analysis involving the economic value of water, and its application in improving the economic efficiency of water systems. Prospects for hydro-economic models in managing water resources in the future are discussed.
Assoc. Prof. Josue Medellin-Azuara
Prof. Guilherme F. Marqes
Prof. Amaury Tilmant
Assoc. Prof. Manuel Pulido-Velazquez
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access monthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
Economic value of the water
Economic instruments for water management
Marginal benefits of water use
Water resources planning and management
Water allocation and decision making
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Planned paper I
Agricultural Irrigation Reclaimed Wastewater Allocation Optimization Model
Ahmed A. Aljanabi1, Larry W. Mays2 and Peter Fox3
School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, USA
1 Email: Ahmed.A.Ahmed@asu.edu
2 Email: Mays@asu.edu
3 Email: Peter.Fox@asu.edu
Water shortage in Iraq, due to climate change, pollution, civil conflicts, political instability, and the high rate of population’s increase, forms a significant recent concern and future challenge. Due to the importance of agriculture in Iraq and its domination on water demand, which forms more than 75 percent of total demand, a sustainable agricultural water allocation scheme is necessary to handle some of the current water issues and to find practical and applicable water conservation measures that helps in the reduction or avoidance the influence of potential droughts and water shortages. Quantitatively and qualitatively problems in addition to weakness of management are the most critical issues related to Iraq’s water resources, which adversely affect the agricultural sector especially downstream Baghdad. Since water shortage crises should be evaluated precisely and handled with caution to satisfy different water demand on various sectors, it is a common practice for arid and semiarid regions, such as in Iraq, to use reclaimed wastewater for agricultural irrigation.
An agricultural irrigation reclaimed wastewater allocation optimization model was developed to optimally allocate crops and reclaimed wastewater (RW) to cultivated farmlands in order to maximize the net benefit. The optimization model is formulated using 0/1 mixed-integer nonlinear programming (MINLP) solved by the branch-and-reduce optimization navigator (BARON) optimizer in the general algebraic mathematical solver (GAMS). The model maximizes the net farm income to determine the cultivated crop assigned to each farmland using three types of reclaimed wastewater (RW); RW type A (tertiary treated wastewater); RW type B (secondary treated wastewater); and RW type C (primary treated wastewater). Not all the cultivated crops which are irrigated using RW type A obtain RW type B or C. All the cultivated crops using RW type B obtain RW type A, but not all obtain RW type C. The cultivated crops irrigated using RW type C accept either RW type A or RW type B.
The proportional sharing rule (PSR) of RW allocation is adopted which allows each farm to obtain its water share equal to the ratio of its observed area to the total observed area of farms. The sensitivity of using different RW availabilities and irrigation efficiencies was tested. Experience using the model to compute net benefit indicates that the model has selected the most economic crops for cultivation depending on the selected type of RW.
Constraints in the optimization model include: (1) Reclaimed wastewater availability constraints, which are the total consumed RW by type constraint, and the consumed RW by type and farm constraint; (2) Irrigated farmlands constraints, which are the irrigated area by farm constraint, total irrigated farmlands per RW type constraint, and maximum allowed area to be cultivated by crop and RW type constraint. Furthermore, the binary variable constraint, which allows only one crop to be cultivated at each farm using a certain RW type, is considered. Other constraints specify the minimum allowed benefit per farm and RW type.
The model has been applied to farms of 7000 hectares located, in the Alrustumia district to the south east of Baghdad, Iraq. Those farmlands are tail river irrigated from Deyala River, which has experienced severe shortages in last ten years by the Jurf-Alrustumia irrigation canal. The main irrigation canal for those farmlands are hundreds of meters away from Alrustumia wastewater treatment plant which disposes about 6.0×105 (m3/day) secondary treated wastewater to the Deyala River before its confluences with Tigris River.