On May 17, the Watertown Dam Herring Festival celebrated river herring migrating on the Charles River. During migration, these fish swim upstream to lay eggs, returning to waters where the next generation can grow.
Rivers can work like “nature highways,” connecting different habitats. Some fish spend part of their lives in the ocean and then travel into rivers to spawn, which takes energy, good timing, and a path they can actually swim through.
That’s where dams matter, because they can block the route like a wall across the water. Communities may help by adding fish ladders—special watery steps that let fish move up and over so they can keep going.
A festival can be more than fun; it can also be a learning day. It helps families notice that nature’s seasonal routines can happen right in their town, and that small changes in a river can affect many living things in the ecosystem.
Rivers can work like “nature highways,” connecting different habitats. Some fish spend part of their lives in the ocean and then travel into rivers to spawn, which takes energy, good timing, and a path they can actually swim through.
That’s where dams matter, because they can block the route like a wall across the water. Communities may help by adding fish ladders—special watery steps that let fish move up and over so they can keep going.
A festival can be more than fun; it can also be a learning day. It helps families notice that nature’s seasonal routines can happen right in their town, and that small changes in a river can affect many living things in the ecosystem.