7 ms·
The big dams on the upper Columbia do not have fish ladders. Although Grand Coulee did have one during construction. I've been looking for data on survival rate
by intrepidhero 6y ago
The big dams on the upper Columbia do not have fish ladders. Although Grand Coulee did have one during construction. I've been looking for data on survival rates for upstream fish... but a brief search hasn't turned up the data I was looking for.