Fish Passage Archives | Conservation Law Foundation

Fish Passage

Giving Native River Herring a Second Chance
by Emily Green

Thousands of dams, large and small, built over the last 250 years have cut fish off from freshwater spawning grounds, thwarting reproductive cycles that had been ongoing for eons. The impacts of these dams, on top of pollution, overfishing, and climate change, have led to a drastic decline in river herring populations – threatening their survival.

Exeter Removes Great Dam
by Jeff Barnum

New Hampshire is not a huge state. But, it is home to almost 5,000 dams – some active, some in disrepair, and some abandoned. That large number can now be reduced by one. The Great Dam in Exeter is no more. Great Bay is fed by seven freshwater rivers – and now two are without head-of-tide dams. In 1638,…

Fish Ladders – A Step Up But Not Always Over
by Sean Mahoney

Fish ladders and elevators “aren’t working like they’re supposed to, and fish aren’t making it to where they need to go.” So began a recent article in Science magazine. In many cases this assertion is spot on – but in others, fish passages have been remarkably successful. Maine has examples of both. To find a…