If you’ve ever floated the Clark Fork or chased browns through the upper reaches of the watershed, you already know something happened upstream — something big and ugly and slow. Silver Bow Creek, which drains right out of Butte and feeds the whole Clark Fork system, spent the better part of a century as an open sewer for one of the most productive — and most destructive — copper mining operations in American history. The scars run deep. But in 1999, Atlantic Richfield Company cut a check, and a long, complicated cleanup began. A new video from the channel Slow Repair takes a serious look at where that money went and what it actually changed.

For Montana anglers, this isn’t just environmental history — it’s personal. The Clark Fork drainage is one of the most storied trout fisheries in the West, and what happens on Silver Bow Creek doesn’t stay on Silver Bow Creek. Metals like arsenic, copper, and zinc don’t care about county lines. For decades, concentrations in these waters were flat-out lethal to fish and invertebrates, which meant the food chain — the bugs, the baitfish, everything a brown or rainbow trout depends on — was wrecked before it could get started. Montana Fish, Wildlife & Parks has worked alongside cleanup efforts to reintroduce fish populations and monitor water quality, but recovery in a system this hammered doesn’t happen on a short timeline. Some stretches have come a long way. Others are still a work in progress.

What makes the $215 million settlement interesting — and what this video gets into — is the gap between the dollar figure and the actual outcome. Writing a big check is one thing. Translating that into functioning riparian habitat, stable streambanks, and a creek that can actually hold a fish again is something else entirely. Restoration in a Superfund context means navigating bureaucracy, contractor timelines, and the sheer physical scale of contamination that spread across floodplains and into groundwater over generations. Anyone who’s driven through the Warm Springs Ponds area knows the landscape still carries the weight of that history. Those settling ponds exist precisely because the water coming off Butte needed treatment before it could continue downstream.

Whether you care about this because you fish the Clark Fork every fall, because you hunt waterfowl in the wetlands along the lower reaches, or because you just believe Montana’s water ought to be clean — this video is worth an hour of your time. It’s the kind of slow, careful storytelling that doesn’t make headlines but absolutely shapes the rivers we fish and the public lands we hunt. The cleanup of Silver Bow Creek is one of the largest natural resource damage settlements in U.S. history. Montana pushed hard for it. The least we can do is understand what we got.