"In 2025, more than 100 dams were dismantled in 30 states, reconnecting around 4,900 miles of waterways...."

"The resulting free-flowing waterways are healthier, cooler and less prone to algal blooms, and serve as vital habitat for migratory fish and other aquatic life. They’re also safer.... While dams that are critical for flood regulation, water storage or irrigation must stay in place, many no longer serve their original purpose and are at risk of collapse.... The National Inventory of Dams, compiled by the U.S. Army Corps of Engineers, lists about 92,000 dams.... But, according to the National Aquatic Barrier Inventory, there are hundreds of thousands of smaller and unregulated structures that block waterways. The majority were built to create swimming and fishing holes or reservoirs for water supplies, or to generate power and irrigate farm fields.... Low-head dams, which are designed to have water flow over them, create a recirculating current downstream that can trap people and debris. They’re known as 'drowning machines'.... 'There’s just so many of these deadbeat dams on the landscape.'..."

I'm reading "America the Undammed/More miles of the country’s rivers were reconnected last year thanks to dam removals than at any other time in history" (NYT).

And I noticed this, from a few years ago: "Dams like the one that killed Anna Last are 'drowning machines'" (Knox News). There's a good diagram at the link, showing the treacherous water flow, and here's part of the explanation:

• The recirculating waters will trap even the most experienced swimmers (including would-be rescuers) and disorient them in the thrashing water as if they are in a washing machine;
• The water has low buoyancy due to all of the air bubbles making life jackets all but useless;
• The water pushes, pulls and dips individuals in an infinite number of ways where rocks, rebar, concrete and other debris from the river are waiting;
• The rivers and streams are filled with cold water and can lead to hypothermia even in the summer;
• The dams are usually made of vertical concrete or masonry, which make climbing out nearly impossible.