Yellowstone National Park treats Buffalo Creek to remove invasive trout

Yellowstone National Park officials are implementing a plan to protect native Yellowstone cutthroat trout by treating Buffalo Creek with rotenone, a naturally occurring piscicide. The initiative aims to eliminate invasive rainbow trout populations that have been spreading into Slough Creek, Soda Butte Creek, and the Lamar River.

Invasive rainbow trout pose a threat to the long-term survival and genetic integrity of the native cutthroat trout through competition and interbreeding. The treatment is scheduled from August 31 through September 6, during which time Buffalo Creek in the park's northern region will be closed. Officials have stated that the process will not impact the drinking water at Slough Creek Campground, and the creek is expected to reopen on September 7.