(iii) Regional disaster management planning shall be aligned with other sector disaster management plans and involve consultation with relevant stakeholders. (iv) Each Member State has an obligation to notify and share information with affected Watercourse States in the event of actual or pending water related disasters. (e) Water Resources Information and Management. Data and Information Acquisition and Management (i) Member States shall establish water resources data and information acquisition and management systems in their territories in an integrated manner at regional, river basin and national levels to meet all water resources management needs. (ii) Member States shall adopt compatible systems for data and information acquisition and management. Information Sharing (i) Member States shall timeously share relevant available information and data regarding the hydrological, hydro-geological, water quality, meteorological and environmental condition of shared watercourses. (ii) Member States shall ensure that members of the public in the region have access to relevant and understandable information regarding water resources impacting on their health or safety and on economic interests. (iii) SADC, SWCIs as well as Member States shall establish mechanisms for regular interpretation and dissemination of essential information on water resources so that the public is regularly informed. Water Resources Assessment Member States shall adopt common or compatible procedures and methodologies for carrying out regular water resources assessment at regional, river basin and national levels. (f) Water Resources Development and Management. River Basin Approach (i) Member States will adopt a river basin or watercourse approach in the planning, development and management of water resources. This applies in particular to shared watercourses. (ii) Watercourse States will prepare and implement river basin development plans in a holistic and integrated manner, with the involvement of stakeholders to achieve equitable and efficient utilisation. (iii) The planning, development and management of watercourses, particularly in shared watercourses will consider the integrated use of surface and ground water resources, the reuse of water, proper pollution management and the provision of environmental requirements. - xiii -