This document describes a system-level approach that integrates planning for hydropower, other water management sectors and conservation of environmental and social resources. For already developed basins, such integrated planning can identify opportunities for restoring the ecological integrity of rivers with minimal reductions in power generation, or even increases in power generation. Within basins poised to undergo hydropower development, this integrated planning approach seeks to identify an optimal spatial arrangement of dams that achieves power generation targets while maintaining important environmental and social resources.