Waldo Lake Crescent Open Water Swimming

Waldo Lake is located in the Willamette National Forest in the Oregon Cascades, approximately 31 miles east of Oakridge and 70 miles from Eugene-Springfield, at an elevation of 5,414 feet. This glacial lake is Oregon’s second deepest lake with a maximum depth of 420 feet and is renowned for incredible clarity, with visibility reaching 120 feet on calm days. The lake has no permanent inlet streams, receiving two-thirds of its water from direct precipitation and one-third from seasonal snowmelt and subsurface springs, contributing to its exceptional purity. Access is via Highway 58 east to Forest Road 5897, then north 8 to 14 miles depending on destination. Three developed campgrounds provide access: North Waldo, Islet, and Shadow Bay, with over 200 developed sites featuring vault toilets, potable water, fire rings, picnic tables, and boat ramps. Facilities operate from late June or early July through September, depending on snowpack. The lake is circled by the 20-mile Jim Weaver Loop Trail, popular for hiking and mountain biking. The Pacific Crest Trail passes nearby.

Swimmers seeking organized events can connect with Oregon Masters Swimming and Central Oregon Masters Aquatics, which hosts the Cascade Lakes Swim Series at nearby Elk Lake. Detailed swimming information and route descriptions for Waldo Lake are available through the Oregon Lake Bagging blog, which documents swims at numerous Oregon lakes. Water temperatures range from high 50s to low 60s in late June, mid-60s in July-August, and can reach low 70s in September.

Water quality is monitored by the Oregon Department of Environmental Quality in partnership with the US Forest Service. Waldo Lake holds Outstanding Resource Water designation, Oregon’s highest water quality protection status, recognizing its exceptional clarity and ecological value. Motorized boats are banned except for electric motors traveling less than 10 mph, creating ideal conditions for swimmers. The mosquito season is intense from June through mid-August. No lifeguards are present, and swimmers should be prepared for cold water temperatures and high-altitude conditions. The area provides dispersed camping around the lake in addition to developed campgrounds.