The EPA wants to cover “most” seasonal and rain-dependent streams, which account for about 60 percent of stream miles in the country, arguing they have “a considerable impact on the downstream waters.”"Seasonal and rain-dependent" means normally dry gulches which pretty much cover the entire state out here. For that matter I've seen some of the classier houses out here that have a rock bed to lead rain gutter water away from the house. These would be covered as well.
The EPA did everything it was supposed to do about 20 years ago and has been ginning up problems to justify its existence ever since. Gotta provide those CIA agents with a cover job after all.