ABSTRACT

This research uses a multi-criteria analysis tool and field site observation to critically analyse a network of dams across a single watershed in the US Pacific Northwest. The analysis offers a template to better understand some nuances and complexities involved in decision-making leading to relicensing, retrofitting or decommissioning of both powered and non-powered structures. The study focuses on 13 dams in Oregon’s Willamette River Basin Reservoir System, where the average age of structures is 62 years, exceeding a national mean of 57 years. Research outcomes can inform stakeholders who make decisions regarding America’s high-risk dam network as it rapidly approaches obsolescence.

摘要

这项研究使用多标准分析工具和现场观察来批判性地分析美国太平洋西北部单个流域的水坝网络。该分析提供了一个模板，可以更好地理解决策中涉及的一些细微差别和复杂性，从而导致动力和非动力结构的重新许可、改造或退役。该研究重点关注俄勒冈州威拉米特河流域水库系统中的 13 座大坝，其中结构的平均年龄为 62 年，超过了 57 年的全国平均年龄。研究成果可以告知利益相关者，他们在美国高风险大坝网络迅速接近报废时做出决策。