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Evolution of drought management policies and practices in the United States

机译:美国干旱管理政策和实践的演变

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The evolution of United States (US) national and federal drought policies is examined, and the relative effectiveness of the hierarchy of federal, state and local drought management programs and practices is evaluated within the context of changing philosophies of water management. While there is no 'national' drought management policy, there is a strong federal policy that attempts to coordinate the management responses of numerous federal agencies. Drought and flood management comprise the key components of assuring national 'water security'. Early 20th century US water resources management was very effective in providing the essential prerequisites of 'water and economic security' through a rapid expansion ofwater storage capacity, flood control, hydropower, irrigation and conveyance facilities as the basis for a robust national economic development program. Increasing water supply capacity has proven to be the most effective strategic drought management option. Today, federal drought management policies and programs focus mainly on demand reduction strategies, buttressed by a powerful array of environmental regulatory programs that strive to attain sustainable resource use. Climate uncertainty will again require greater focus on supply-side options that increase water supply robustness and resilience, especially in the growing urban areas of the semi-arid west.
机译:研究了美国(美国)国家和联邦干旱政策的演变,并在不断变化的水资源管理理念的背景下评估了联邦,州和地方干旱管理计划和实践等级制度的相对有效性。尽管没有“国家”干旱管理政策,但有一项强有力的联邦政策试图协调众多联邦机构的管理对策。干旱和洪水管理是确保国家“水安全”的关键组成部分。 20世纪初,美国的水资源管理通过迅速扩大蓄水能力,防洪,水力发电,灌溉和输送设施,为健全的国民经济发展计划提供了基础,在提供“水和经济安全”的基本前提方面非常有效。事实证明,增加供水能力是最有效的战略干旱管理方案。如今,联邦干旱管理政策和计划主要集中于减少需求战略,并受到一系列旨在实现可持续资源利用的强大环境监管计划的支持。气候不确定性将再次要求更加侧重于提高水供应稳健性和适应能力的供应方选择,特别是在半干旱西部日益增长的城市地区。

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