I have fished the Upper Sacramento River since I was in high school. It had the distinction of being one of the few "Blue Ribbon" trout streams in the country. It was filled with big, healthy, native rainbow and brown trout. It ran unimpeded from Lake Siskiou to Lake Shasta...about 40 miles. The stream was filled with aquadic vegitation and the bug life (hatches) were prolific. A railroad ran next to the river for most of it's 40 mile course and access points were many. For an angler, it was Nirvana...just about perfect in all respects. Andy has probably fished this river and can attest to it's beauty.
About 20 years ago a freight train derailed on the Cantella Loop, just a couple miles below the dam where the river actually starts. The Cantella Loop is where the train crosses the river and has a very sharp turn leading to the trestle. One of the tanker cars turned over and spilled its entire load into the river. That tanker was loaded with a DDT type herbicide and over the next several days it slowly made it's way to Lake Shasta, killing every bug, every plant, and every fish on it's way. It was an ecological nightmare.
There was a lot of controversy on how best to "fix" the river. They decided, in essence, to do nothing and to let nature take over. The river was closed to fishing for about 5 or 6 years. The fish that were in the tributaries to the river survived and they were the ones that largely repopulated the river. The vegetation has returned, the bugs are back, and the fish are prolific. The railroad fixed the Loop, hopefully avoiding reoccurence. Today the river is almost back to it's glory days.
This is perhaps a long-winded way of responding to your last post, Jester. I just wanted to let you know that things happen that you and I cannot control. In time, nature will step in and make things right.