Buttress Dam: Repair It!

You've decided to advise the dam owner to repair the dam and try to make it more salmon-friendly. According to your friends at the U.S. Army Corps of Engineers, there's a way to keep the dam without killing the salmon. You can do this by building fish ladders. Fish ladders look like a series of small waterfalls alongside a dam. Salmon swim upstream, and they "jump" from one waterfall to the next, until they reach the reservoir at the top of the dam.

Fish ladders help salmon swim upstream -- but environmentalists say they don't really fix the problem because they don't restore dwindling fish populations.

This is a difficult decision, because there really is no perfect answer. See what would happen if you made a different choice.

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