Suchergebnisse

The Southern Nevada Water Authority (SNWA) plans to build a 300-mile pipeline to transfer groundwater from five rural basins in north-eastern Nevada south to the greater Las Vegas metropolitan area. Relying on the path dependence literature, we trace the policy choices and legal battles that have led to southern Nevada's proposed Groundwater Development Project. We find that policy decisions over time, often initiated by powerful water policy entrepreneurs, have fuelled southern Nevada's rapid growth and development. After emphasising water demand management for more than two decades, SNWA has revived its controversial plans to increase water supplies by importing water from rural areas. Using semi-structured key-informant interviews and document analysis of water right hearing transcripts, public comments, and hearing rulings, we examine the risks and uncertainties involved in SNWA's Groundwater Development Project. SNWA and the protestors of the project experience different aspects of risk and uncertainty. SNWA believes the Groundwater Development Project is an essential addition to its current water strategy to reduce the political and economic risks from Colorado River shortages that could endanger southern Nevada's longer-term economic survival. Protestors believe the uncertainty of SNWA's mitigation and management plans are inadequate to protect rural basins from the long-term ecological and hydrological risks and uncertainties associated with SNWA's pumping and export of groundwater from their areas. Our analysis reveals a much deeper and longer path dependence trajectory in the USA West of overpopulating an arid region, subsidising decades of infrastructure development to promote economic development, and creating dependencies on increasingly scarce water supplies. A paradigm shift much larger than water demand management is required to reverse this trajectory and deal with the dilemmas of unabated growth in desert metropolitan areas dependent on distant water sources.

AbstractThe Bear River Basin, which includes portions of Idaho, Utah, and Wyoming in the United States, has a dynamic history of human hydrologic adaptations in relation to a highly variable water supply. These adaptations are embedded in a geographical setting highly influenced by the legal, policy, and institutional contexts that govern allocation of water in this generally arid region. In response to several years of drought and a historically low water year in 2004, water users in the Bear River Basin tested the efficacy of the "law of the river" and innovative agreements that they had negotiated in recent years to help mitigate impacts related to water shortages. Three innovations were identified as being key to a successful response to the 2004 drought: 1) a precedent-setting voluntary settlement agreement, 2) technical work in river modeling and instrumentation, and 3) extraordinary communication strategies employed throughout the drought. Based on case study research and utilizing a "ways of knowing" theoretical framework, the authors report on an unfolding contemporary history of how people in the Bear River Basin have learned to deal with uncertainties and risks associated with both droughts and floods. Their story has important implications for the understanding of conflict and cooperation in water systems, management of transboundary waters, and the promotion of sustainable water resource governance.

The Bear River is driven by a highly variable, snow-driven montane ecosystem and flows through a drought-prone arid region of the western United States. It traverses three states, is diverted to store water in an ecologically unique natural lake, Bear Lake, and empties into the Great Salt Lake at the Bear River Migratory Bird Refuge. People in the Bear River Basin have come to anticipate droughts, building a legal, institutional, and engineered infrastructure to adapt to the watershed's hydrologic realities and historical legacies. Their ways of understanding linked vulnerabilities has led to what might appear as paradoxical outcomes: farmers with the most legally secure water rights are the most vulnerable to severe drought; managers at the federal Bear River Migratory Bird Refuge engage in wetland farming and make unlikely political alliances; and, increased agricultural irrigation efficiency in the Basin actually threatens the water supply of some wetlands. The rationality of locality is the key to understanding how people in the Bear River Basin have increased their adaptive capacity to droughts by recognizing their interdependencies. As the effects of climate change unfold, understanding social-ecological system linkages will be important for guiding future adaptations and enhancing resilience in ways that appropriately integrate localized ecosystem capacity and human needs.