Another nice idea is removing obsolete river dams to give fish access to their former breeding grounds upstream. >The removal of both dams, in conjunction with

Another nice idea is removing obsolete river dams to give fish access to their former breeding grounds upstream. >The removal of both dams, in conjunction with active stocking of alewives into lakes and ponds upriver and in other parts of the watershed, has helped the river herring population rebound dramatically. The number of alewives returning to spawn jumped from 78,000 in 1999 to 5.5 million last year. And the downstream estuary has reaped rewards, too. When those billions of juvenile river herring leave the freshwater lakes and rivers, they head for the sea and may spend between three and five years in the marine environment. There they serve are a food source for everything from cod and haddock to whales and seals. “They are really a kind of keystone ecological species for the Gulf of Maine,” says Burrows. https://therevelator.org/edwards-dam-removal/ https://therevelator.org/edwards-dam-removal/