Your city or town probably either has a large, brand-new hydropower dam or you know of an old one, located on the outskirts; a crumbling relic from an earlier period in your state’s history. I know this because according to the national nonprofit conservation organization American Rivers, on average our country has constructed one dam every day since the signing of the Declaration of Independence. And the U.S. Army Corps of Engineers counts approximately 75,000 dams that are greater than six feet along the waterways of the United States. In addition, there are at least tens of thousands of smaller dams spanning our rivers and streams.
Whichever version of the structure is in your area, it seems that dams divide us. While some regard them as a clean energy source, others view them as a danger to river otters and fish populations.
So, are our dams good for the environment, or a threat to wildlife?