This document summarizes key issues and lessons from water resources planning and governance in highly contested river basins:
1. In heavily used river basins, it is no longer possible to allocate water to meet all demands. Water resources planning must shift to view water as integrated into the economy, not separate from it.
2. Social and cultural values must be understood and incorporated into the planning process, as people's values matter greatly in contested basins.
3. Environmental protection arguments require strong evidence when water development offers clear social and economic benefits, especially in developing countries. Good science and monitoring are needed.
4. Challenges of water, food, and energy security are intricately linked and must