You've decided to advise the dam owner to repair the dam and try to make it more salmon-friendly. According to your friends at the U.S. Army Corps of Engineers, there's a way to keep the dam ...

You've decided that the electric power this dam provides does not justify the number of fish it kills. You're not alone. In 1999, the Edwards Dam in Maine was knocked down against the owner's will.

The m-Presa™ modular steel buttress dam system facilitates the rapid construction of paired reservoir systems for grid-scale energy storage and generation using closed-loop pumped storage ...