The Animas is Durango's river, and a closely watched one

The Animas River is the heart of Durango’s outdoor life. It runs right through town, drawing rafters, anglers, tubers, and families to its banks all summer, and it is one of the main reasons people fall for this corner of the Western Slope. It is also a working, watched river, and that is worth knowing as you enjoy it.

Upstream near Silverton, the Animas drains a region with a long history of hard-rock mining, and old mine workings there have leaked metal-laden water into the headwaters for a long time. The event most people remember is the Gold King Mine release in August 2015. While crews worked at an old mine above Silverton, a blowout sent millions of gallons of acidic, metal-rich water into a tributary and down the Animas, turning the river a startling orange as it moved toward Durango. The U.S. Environmental Protection Agency responded, monitored the water closely, and later reported that water quality from the Silverton area to Durango’s drinking-water intake returned to pre-event levels.

For a resident today, the takeaway is awareness, not alarm. Agencies sample the river regularly, both because of that 2015 event and because of the much older mining legacy upstream, and conditions can shift with runoff and upstream drainage. If you fish, paddle, or draw on river-connected water, it is worth checking current agency monitoring rather than assuming.

This is a sensitive, well-documented topic, so rely on official sources. The EPA’s Gold King Mine pages explain the event and the monitoring that followed.