The Trump administration announced plans to cut back the number of wetlands and creeks protected under the Clean Water Act, which regulates water pollution in the U.S. The new rules would leave about half the nation’s wetlands and all of its ephemeral streams — those waterways, common in the West, that flow only after rainfall or snowmelt — without federal safeguards. The proposed guidelines, which will almost certainly face years of lawsuits, are a stark departure from how previous administrations have interpreted the act — and a sharp divergence from research on how to protect clean water. The Environmental Protection Agency and the Army Corps of Engineers argued that the new rules were informed by science. But the agencies did not conduct a new scientific assessment of which waterways the Clean Water Act should cover; instead, they relied on a comprehensive report prepared by the EPA in 2015. That report, on how streams and wetlands are connected to downstream waters, highlights the importance of the very waterways the new guidelines would leave unprotected.The regional example I’ve used is the Pacific Northwest. They have a very different attitude toward rivers than anywhere else in the U.S., and I think it’s because of the focus on salmon. They get it — a salmon can’t survive without a watershed. It needs to migrate upstream, it needs spawning habitat, it needs rearing habitat. They’ve made the connection between a particular fish that everybody is excited about and the whole watershed.Even though there are these national rules, and even if they go into effect, there are things you can do locally to protect your local river. If people feel strongly about this, I would encourage them to become active in, or form, local watershed groups. Then you get the immediate benefits of a clean, healthy river. So adopt a river, and care for it.