Cougar Hot Springs, officially known as Terwilliger Hot Springs, are geothermal pools located in the Willamette National Forest in the U.S. state of Oregon, 53 miles (85 km) east of Eugene. The springs drain into Rider Creek, which in turn drains into Cougar Reservoir. They are located about a quarter mile from Forest Service Road 19, also known as Aufderheide Memorial Drive.