An environmental flow is the water regime provided within a river, wetland or coastal zone to maintain ecosystems and their benefits where there are competing water uses and where flows are regulated. Pioneering efforts in South Africa, Australia and the United States have shown that the process to establish them poses great challenges. Second in the series of the Water & Nature Initiative, this guide draws extensively on the experiences in these countries to offer hands-on advice and practical guidance on technical issues for this emerging issue on the water resource agenda.

With a long history and deep connection to the Earth’s resources, indigenous peoples have an intimate understanding and ability to observe the impacts linked to climate change. Traditional ecological knowledge and tribal experience play a key role in developing future scientific solutions for adaptation to the impacts. The book explores climate-related issues for indigenous communities in the United States, including loss of traditional knowledge, forests and ecosystems, food security and traditional foods, as well as water, Arctic sea ice loss, permafrost thaw and relocation. The book also highlights how tribal communities and programs are responding to the changing environments. Fifty authors from tribal communities, academia, government agencies and NGOs contributed to the book. Previously published in Climatic Change, Volume 120, Issue 3, 2013.

"Rights to water are increasingly crucial and increasingly contested across theglobe. Urbanization, industrialization, environmental degradation, agriculturalintensification, rising per capita water use, increasing population, andother social, political, and economic transformations contribute to growing scarcity and demand for better management of water resources. In responding to these challenges, the world can draw on a rich heritage of institutions for regulating rights to water and resolving disputes, and a diversity of institutional arrangements that demonstrate great ingenuity in designing solutions to fit the conditions and priorities of various river basins. However, policy discussion in water management has often been impoverished by narrow polarization around a few idealized models of centrally integrated management or water commoditization, even though these comprise only a small and very incomplete subset of the institutional options available for effective management. The authors in this book expand the range of reflection and analysis of water rights reforms, offering insights aimed especially at those seeking practical pathways to improve equity, efficiency, and sustainability in access to water."

The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.

Report to the Western Water Policy Review Advisory Commission.