Modeling for Transboundary Water Resources Planning and Allocation : Volume 5, Issue 1 (19/02/2008)

By Juízo, D.

Book Id: WPLBN0003983634
Format Type: PDF Article :
File Size: Pages 35
Reproduction Date: 2015

Title:	Modeling for Transboundary Water Resources Planning and Allocation : Volume 5, Issue 1 (19/02/2008)
Author:	Juízo, D.
Volume:	Vol. 5, Issue 1
Language:	English
Subject:	Science, Hydrology, Earth
Collections:	Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic Publication Date:	2008
Publisher:	Copernicus Gmbh, Göttingen, Germany

Member Page:	Copernicus Publications
Citation APA MLA Chicago Lidén, R., & Juízo, D. (2008). Modeling for Transboundary Water Resources Planning and Allocation : Volume 5, Issue 1 (19/02/2008). Retrieved from http://gutenberg.us/

Description
Description: Universidade Eduardo Mondlane, Faculdade de Engenharia, Av. de Moçambique, CP 257, Km 1.5, Maputo, Moçambique. International water resources agreements for transboundary rivers in southern Africa are based on system analysis models for water planning and allocation. The Water Resources Yield Model (WRYM) developed in South Africa has so far been the only model applied in official joint water resources studies aimed to form water-sharing agreements. The continuous discussion around the model performance and growing distress over it being South African, where it was originally developed, while South Africa is one of the interested parties in the process, results in an increased controversy over the system analysis results that are often only meant to guide in selecting the options for water resources management in a given set of scenarios. The objective of this study was therefore to assess the model performance of two other models; WAFLEX and WEAP21 in the Umbeluzi River Basin system where the WRYM was previously applied as part of a Joint River Basin Study. A set of basin development scenarios was equally tested in the three models and the results compared. The results show that the three models all are possible tools for system analysis of river basins in southern Africa, although the structure and complexity of the models are different. The obtained level of satisfaction for specific water users could, however, vary depending on which model was used, which causes uncertainties. The reason for the diverse results is the structurally different ways of describing allocation and prioritization of water in the three models. However, the large degrees of freedom in all system models cause even larger uncertainty in the results since the model user can, intentionally or unintentionally, direct the results to favor certain water users. The conclusion of this study is therefore that the choice of model does not per se affect the decision of best water allocation and infrastructure layout of a shared river basin. The chosen allocation and prioritization principles for the specific river basin and the model user's experience and integrity are more important factors to find the optimal and equitable allocation.

Summary
Modeling for transboundary water resources planning and allocation

Excerpt
Carmo Vaz, A. and van der Zaag, P.: Sharing the Incomati waters: co-operation and competition in the balance: From potential conflict to co-operation potential, UNESCO/IHP/WWAP/IHP-VI/Technical Documents in Hydrology/PC-CP Series/n. 14, 2003.; Chapman, R. A., Manders, P. T., Scholes, R. J., and Bosch, J. M.: Who should get the water? Decision support for water resource management, Water Sci. Technol., 32(5–6), 37-43, 1995.; Consultec and BKS Acres: Joint Inkomati Basin Study: Phase 2, Tripartite Permanent Technical Committee, Kingdom of Swaziland – Republic of Mozambique – Republic of South Africa, 2000.; de Groot, R. and Oosterwijk, W.: Water Resources Study of the Maputo River Basin: Creating a water resources yield model for the Maputo river basin, M.Sc. report, Delft University of Technology (TU-Delft), Delft, The Netherlands, 2006.; Dent, M.: Installed water resource modelling systems for catchment management agencies, Water SA, 27(3), 333–340, 2001.; Savenije, H. H. G.: Spreadsheets: Flexible tools for integrated management of water resources in river basins, IAHS Publications, 231, 741–744, 1995.; Draper , A.J, Lund, J.R.: Optimal Hedging and Carryover Storage Value, Journal of Water Resources Panning and Management, ASCE, January/February, Vol. 130, no 1,pp 83-87, 2004.; Grossmann, W., Guariso, G., Hitz, M., and Wethner, H.: A Min Cost Solution for Dynamic Assignment Problems in Networks with Storage Devices, Manage. Sci., 41(1), 83–93, 1995.; Joyce, B., Vacuña, S., Dale, L., Hanemann, M., Purkey, D., and Yates, D.: Climate change impacts on water for agriculture in California: A case study in the Sacramento Valley, California Climate Change Center, White Paper, CEC-500-2005-194-SF, California, USA, 2006.; Juizo, D., Lidén, R., and Carmo Vaz, A.: Remaining Challenges for bi-national agreements on shared water: The Umbeluzi case, Water Policy, 8, 231–253, 2006.; Le Roy, E.: A study of the development of water resources in the Olifants catchment, South Africa: Application of the WEAP model, M.Sc. report, Imperial College, London, 2005.; Lévite, H. and Sally, H: Linkages between Productivity and equitable allocation of water, Phys. Chem. Earth, 27, 825–830, 2002.; Mackenzie, R. S. and van Rooyen, P. G.: Water Resources Yield Model: User Guide – Release 4.1.1, Department of Water Affairs (DWAF), South Africa, 1999.; Mackenzie, R. S. and van Rooyen, P. G.: Management large water resources systems, Water Supp., 3(3), 297–304, 2003.; Nkomo, S. and van der Zaag, P.: Equitable water allocation in a heavily committed international catchment area: the case of the Komati Catchment, Phys. Chem. Earth, 29, 1309–1317, 2004.; Raju, K. S. and Pillai, C. R. S.: Multicriterion decision making in river basin planning and development, Eur. J. Oper. Res., 112, 249–257, 1999.; SADC: Revised Protocol on Shared Watercourses in the Southern African Development Community (SADC), 2000.; Rosenzweig, C., Strzepek, K. M., Major, D. C., Iglesias, A., Yates, D. N., McCluskey, A., and Hillel, A.: Water resources for agriculture in a changing climate: international case studies, Global Environ. Change, 14, 345–360, 2004.; Sengo, D.J., Kachapila, A., van der Zaag, P., Mul, M., and Nkomo, S.: Valuing the environmental water pulses into the Incomati estuary: Key to achieving equitable and sustainable utilisation of transboundary waters, Phys. Chem. Earth, 30, 648–657, 2005.; Sieber, J., Huber-Lee, A., and Raskin, P.: WEAP: Water Evaluation And Planning System User Guide (for WEAP21), Stockholm Environmental Institute – Boston, and Tellus Institute, User Guide for WEAP21, Boston, MA, 2002.; Sweco in association with Consultec Lda, Impacto Lda, BKS, Knight Piésold: Joint Umbeluzi River Basin Study: Final Report, Report prepared for the Government of the Republic of Mozambique and the Government of the Kingdom of Swaziland, 2005.; Symphorian, G. R., Madamombe, E., and van der Zaag, P.: Dam operation for e