When the United States, over a twenty year period, repeatedly issues stop work orders and tells you to stop dredging an intermittent creek that's a tributary of the Teton (and then Snake) River, don't just repeatedly and uniformly ignore these government edicts.
Sure, the first half-dozen or so times, they might not do anything. But, eventually, someone's going to get sufficiently hacked off to do something about it. Like criminally charge you for violating the Clean Water Act. And you're going to spend 18 months in federal prison for the your stubborn intransigence.
So pay attention to what the government says. Even if you're in Idaho. And even if your name is Moses.
You can part the Red Sea. But you can't dredge Teton Creek. Affirmed.