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I think we do for the big ones on the Columbia, etc. The small ones that are aging anyway get torn out.

I'm in Montana and the river here during the spawn looks red with salmon. I don't know how many ladders they climbed, but it seems like they can work. These fish would have to have come up the Columbia river.

Somewhere up the thread, a 3% success rate was thrown out, so maybe some designs are better than others.

Where in Montana? Salmon generally don’t make it up the Colombia through ID into the Clark fork: https://www.mtpr.org/2022-09-28/why-arent-there-salmon-in-th...

East of the divide is the Mississippi basin so that’s a whole different story.

The NW corner, but not part of the Clark Fork drainage. It is a sneaky little corner that refuses to flow with the rest of the state.

Salmon snagging is a thing for us and the bears.

If you’re referring to the Kokanee from Kootenay, they are a land-locked sockeye. I don’t think any ocean-goers make it to Libby.

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