New Water Policy and Practice Volume 1, Number 1 - Fall 2014 | Page 36

New Water Policy and Practice stream and downstream stakeholder issues and for bringing consensus among competing water users. The Ecohydrology initiative aims to enhance ecosystem services through dual regulation of flow and biota in fresh water and estuarine environments. The ecosystem services approach also offers an adaptable tool to river basin managers who are struggling to implement IWRM for better balance between consumptive and environmental uses of water. In this regard UNESCO IWRM Guidelines at the River Basin level can benefit from practical case studies which should be invited to be published in this new journal. This will also increase IWRM database of keys for success to implement integrated solutions through an upward spiral approach which maximises the triple bottom line. Experiences gained through previous UNESCO IHP phases have shown that freshwater availability will become a major concern if no immediate actions are taken to restore and enhance the associated ecosystems. UNESCO has been collaborating with the Network of Asian River Basin Organizations (NARBO) to develop the IWRM Guidelines at the River Basin Level to address practical implementation of IWRM. IWRM is essentially a user-friendly and cooperative approach that invites each sector to meaningfully participate and cooperate in the implementation, with a practical roadmap so as to contribute to achieving both private and public benefits in a sustainable manner (UNESCO 2009; Nakajo 2010). As part of these guidelines UNESCO’s has been promoting a Spiral Model (Figure 1) for integrated water resources management which involves several repetitions of fourstage (recognizing, conceptualizing, coordinating and implementing) water resources development in a river basin. It recognizes that management principles and objectives evolve over time as new demands and needs emerge, and innovative solutions are added at each stage. The development stage changes when recognition of the need for change arises among stakeholders. Moving up the spiral is a participatory management process, which requires reaching agreements with stakeholders and building new consensus. While the ‘spiral model’ is a convenient graphical conceptualization of the iterative, evolutionary, and adaptive management process, for adjusting to new needs, circumstances, and societal goals there is a need for a clear understanding of the approach by all stakeholders. The institutional and policy frameworks need to be adapted over time to the evolutionary nature of the spiral model for progressive positive changes in water resources development and management. IV - Synthesis of obstacles to the implementation of IWRM principles S ome obstacles to wider adoption of IWRM practice identified through international initiatives are described below. Lack of knowledge of water balance and its interactions with water quality: the impacts of biophysical changes in catchment hydrology on water quantity and quality remain less well defined (Khan, Rana and Hanjra 2010a). A better understanding of the fate of contaminants and pathogens passing through the water cycle remains only desirable knowledge in most situations. Missing understanding of the Ecohydrology of river basins: there is still poor ecohydrology knowledge at the landscape level. Specialists in IWRM need to improve understanding of water-landscape level management of the environment, taking full account of the interactions among ecosystems and their dependent habitats. Inter-linkages between agro-biodiversity and land and 34