Department of Civil and Environmental Engineering, University of California, Davis, One Shields Avenue, Davis, California 95616, USA, US.
Environ Manage. 2000 Dec;26(6):615-28. doi: 10.1007/s002670010120.
The major purpose of this paper is to explore the potential value of benefit-cost evaluation for stormwater quality management decisions at a local level. A preliminary benefit-cost analysis (BCA) screening method is used for maximum extent practicable (MEP) analysis, identifying promising management practices, and identifying societal and economic tradeoffs for local stormwater problems. Ballona Creek, a major urban storm drain in Los Angeles, California, USA, is used to illustrate the practicality of the benefit-cost evaluation. The Ballona Creek example demonstrates the economic limits of stormwater management in an urban region and attests to the value of coordinated basinwide management compared to uncoordinated management by individual landowners. Evaluation results suggest that in urban areas, the benefit of stormwater quality improvements might be far greater if accompanied by comprehensive redesign of drainage networks and neighboring land uses. In this case, benefit-cost analysis is found to be useful for evaluating and understanding stormwater management alternatives despite the uncertainties in characterizing stormwater quality and the effects of stormwater management on improving receiving water quality.
本文的主要目的是探讨在地方层面上进行雨水管理决策的效益-成本评估的潜在价值。本研究采用初步效益-成本分析（BCA）筛选方法进行最大程度可行（MEP）分析，以确定有前途的管理实践，并确定当地雨水问题的社会和经济权衡。美国加利福尼亚州洛杉矶的主要城市雨水排水道巴拉纳溪（Ballona Creek）被用来举例说明效益-成本评估的实用性。巴拉纳溪的例子证明了在城市地区进行雨水管理的经济限制，并证明了与单个土地所有者的非协调管理相比，流域范围内的协调管理具有价值。评估结果表明，在城市地区，如果伴随着排水网络和邻近土地利用的综合重新设计，雨水质量改善的效益可能会大得多。在这种情况下，尽管在描述雨水质量和雨水管理对改善受纳水质的影响方面存在不确定性，但效益-成本分析被发现对于评估和理解雨水管理替代方案是有用的。
