migration barriers that block passage to spawning grounds, alteration of creek habitat, in-channel mining, temporary road-building through channels, water pumping, predation by and competition from ...

In Oregon, human-made barriers have turned centuries-old migratory routes into life-or-death struggles for fish.

NORTH DAKOTA (KXNET) — For those looking to hook a salmon before it gets too cold out, you might want to know where to look.

migration barriers that block passage to spawning grounds, alteration of creek habitat, in-channel mining, temporary road-building through channels, water pumping, predation by and competition from ...