In addition, the poor conditions downstream interfere with fish migration to the creek.

The government says two big issues - fish migration and sediment flow - will be addressed.

A dam was removed in 2007 to help facilitate fish migration.

Since the 1940's, it had stood abandoned, but it still cut off fish migration.

The Chinit River has been a subject of studies on fish migration.

There is concern that these nets could interfere with fish migration.

During the summer months the dams increase their water releases to aid fish migration downstream.

This great fish migration is called the sardine run.

The third alternative was chosen two years later, but did not substantially improve fish migration as expected.

A concrete dam along the creek's course prevents fish migration.