一、前言洪水年复一年依然是遍及全美的一个严重问题。通过筑坝、修堤、河道整治和分洪等一系列工程措施曾大大减轻了洪灾损失。但对新的工程设施进行经济论证,今天比过去要困难得多。联邦政策规定,只有效益大于成本(此处即投资或造价-译者)的工程才是得到论证的工程。本文拟对防洪工程计划何以越来越难满足经济可行性标准的原因及其细节作一阐 I. Preface The flood is still a serious problem throughout the United States every year. A series of engineering measures such as dam construction, dike restoration, river regulation and flood diversion have greatly reduced flood losses. However, the economic justification of new construction facilities is much more difficult today than in the past. Federal policy states that only projects that have benefits over costs (investment or cost-translators) are arguably projects. This article intends to explain why the flood control project is becoming more and more difficult to meet the economic feasibility standard and its details