River flows connect people, places, and other forms of life, inspiring and sustaining diverse cultural beliefs, values, and ways of life. The concept of environmental flows provides a framework for improving understanding of relationships between river flows and people, and for supporting those that are mutually beneficial. Nevertheless, most approaches to determining environmental flows remain grounded in the biophysical sciences. The newly revised Brisbane Declaration and Global Action Agenda on Environmental Flows (2018) represents a new phase in environmental flow science and an opportunity to better consider the co-constitution of river flows, ecosystems, and society, and to more explicitly incorporate these relationships into river management. We synthesize understanding of relationships between people and rivers as conceived under the renewed definition of environmental flows. We present case studies from Honduras, India, Canada, New Zealand, and Australia that illustrate multidisciplinary, collaborative efforts where recognizing and meeting diverse flow needs of human populations was central to establishing environmental flow recommendations. We also review a small body of literature to highlight examples of the diversity and interdependencies of human-flow relationships—such as the linkages between river flow and human well-being, spiritual needs, cultural identity, and sense of place—that are typically overlooked when environmental flows are assessed and negotiated. Finally, we call for scientists and water managers to recognize the diversity of ways of knowing, relating to, and utilizing rivers, and to place this recognition at the center of future environmental flow assessments.This article is categorized under:Water and Life > Conservation, Management, and AwarenessHuman Water > Water GovernanceHuman Water > Water as Imagined and Represented
ABSTRACT. Access to adequate quantity and quality of fresh water is critical to the well-being of Tanzania's human population, currently approaching 50 million. In the early 2000s, Tanzania revamped its legal and institutional frameworks related to freshwater resources management with the passage of the National Water Policy (NAWAPO) and the Water Resources Management (WRM) Act. Three major components of these frameworks are: the use of natural hydrological boundaries as units for management; the designation of an order for decision making on water allocation that prioritizes basic human and ecosystem water needs; and the encouragement of community participation in freshwater resources management. Institutionally, WRM now follows a nested approach, with the Tanzanian Ministry of Water operating at a national scale, nine basin water offices responsible for water allocation at a river basin scale, and formally recognized water users' associations as mechanisms for public participation at the catchment scale. To date, 93 water users' associations have been formed. Although some are active and appear effective, others are almost dormant, and not achieving their full potential as partners in WRM. In this paper, we provide context for the sweeping changes in WRM in Tanzania and review the lessons from more than a decade of implementation of the NAWAPO. We focus in particular on the role of the water users' associations, and use case studies of three basins-the Pangani, Wami/Ruvu, and Lake Victoria-to examine their strengths and challenges. Tanzania's experience offers lessons for other countries considering revision to legal and institutional frameworks around fresh water.
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