Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Etats Unis → 2010 → Perception of ecological risk to water environments and how it affects water consumption and water resource management in southern Nevada

University of Nevada, Las Vegas (2010)

Perception of ecological risk to water environments and how it affects water consumption and water resource management in southern Nevada

Kiriscioglu Tanju

Titre : Perception of ecological risk to water environments and how it affects water consumption and water resource management in southern Nevada

Auteur : Kiriscioglu Tanju

Université de soutenance : University of Nevada, Las Vegas

Grade : Master of Science in Environmental Science (2010)

Résumé
Climate is harsh in southern Nevada where there is (and has been) a drought alert in effect for over a decade now (Kerr, 2007 ; Southern Nevada Water Authority, 2009). Las Vegas Valley is a major center of population in the region (1.9 million people), receiving only 4.5 inches of average annual precipitation yet in need of securing more water resources in the near future (SNWA, 2009). Water resource management in southern Nevada is a challenge, especially when 90% of the area’s water needs are met by a single source, the Colorado River, the flow rates of which have been in decline in recent years (Johnson, 2008 ; Morrison, Postel, & Gleick, 1996). Currently there are two practices in Las Vegas Valley pertaining to water resource use and management which, if modified, will increase the area’s available water stock in the region. First, in spite of the drought and a strong emphasis on public outreach programs to cut down consumptive uses, water-intensive landscaping trends in Las Vegas Valley continue depleting the area’s scarce water resources (SNWA, 2005 ; SNWA 2006a), and Las Vegas Metropolitan Area continues to have a high per capita water consumption compared to other urban areas in southwestern U.S. And second, Southern Nevada Water Authority (SNWA), while recognizing the drought in the region, continues to emphasize supply-side water management policies such as the interbasin water transfer plan from rural communities in southeastern/eastern Nevada to Las Vegas Valley (SNWA, 2006b ; SNWA, 2009). SNWA’s plan to bring interbasin water (groundwater) from rural Nevada to Las Vegas Valley is the latest addition to southern Nevada’s supply-side water resource management policies, creating tension between urban and rural communities. Concerned citizens, environmental groups, and scientists contend that SNWA’s interbasin water transfer plan, if implemented, will have undesired social, economic, fiscal, ethical, and ecological implications (Deacon et al., 2007 ; Sierra Club 2008). These implications can be avoided if people in Las Vegas Valley start using the region’s scarce water resources in a more sustainable manner so that there may not even be a need to look for additional water elsewhere (Deacon et al., 2007). This professional paper discusses southern Nevadans’ perception of risk to water environments, and how it affects water resource management and water consumption in the region. Understanding people’s risk perception to water environments will help the policymakers develop effective risk management and risk communication strategies. It will also aid the ongoing policy debate on interbasin water transfer plan from rural Nevada to Las Vegas Metropolitan Area so that 1. The stakeholders’ views on both sides of the issue, and the plan’s social, economic, fiscal, ethical and ecological implications can be better understood, and 2. Informed decisions can be made in a sustainable manner, ensuring the rights of stakeholders and natural systems are not violated, the region’s valuable resources are preserved, and the true costs and benefits of interbasin water transfers are accurately quantified to benefit both the rural and urban residents of Nevada.

Présentation

Version intégrale

Page publiée le 23 octobre 2012, mise à jour le 30 octobre 2018