during downstream migration some rivers can have thousands of young salmon making the trip to the ocean which method of moving the salmon is more efficent of moving large quantites of young salmon downstream
One efficient method of moving large quantities of young salmon downstream during their migration is using fish-friendly dams or fish ladders.
Fish-friendly dams are designed to allow fish passage by incorporating fish bypass systems such as fishways, fish locks, or fish slides. These structures help the fish navigate around or over the dam, ensuring a smooth downstream migration. By providing a clear and safe passage, fish-friendly dams can facilitate the movement of thousands of young salmon in an efficient and sustainable manner.
Fish ladders are another effective method for aiding salmon migration. A fish ladder consists of a series of ascending pools or steps that allow fish to gradually move upstream or downstream past barriers like dams or waterfalls. The design of fish ladders enables salmon to swim through the ladder while overcoming natural obstacles in their path, ensuring efficient movement downstream.
Both fish-friendly dams and fish ladders aim to minimize the impact on fish migration caused by human interventions in rivers, such as dams or barriers. These methods help maintain healthy salmon populations by preserving their ability to migrate between breeding and feeding grounds.