Thinking Clearly About Demolishing Dams
In the midst of the current regional debate over the fate of a number of dams, first off, to see why in many cases dam removal makes good sense, we should consider the current state of the nation’s aging dams. There are, according to the U.S. Army Corps of Engineers’ National Inventory of Dams, approximately 84,000 dams in the nation providing a range of benefits that were built for a wide variety of purposes. This is a staggering number – almost one dam built in the U.S. for every day since the signing of the Declaration of Independence in 1776.
Yet no dam can exist forever. All have engineered lifespans, after which their reservoirs silt up, their concrete structures crack and deteriorate and they can catastrophically fail—endangering the lives, property and natural resources (including...