Thick forests, hiking, mountain biking, camping, swimming and boating. Waldo Lake is a recreation gem of the Cascades (besides the hordes of mosquitoes in early summer). Waldo Lake is one of the largest natural lakes in Oregon. Lying high on the western slopes of the Oregon Cascades, Waldo Lake is one of the largest natural lakes in Oregon and one of the purest lakes in the world. It has no permanent inlet to bring nutrients into the lake for plant growth. The lack of plant life contributes to its purity. You can see to depths of 120 feet on a calm day. It offers a uniquely peaceful setting on the water and along remote shorelines, surrounded by forests of Douglas fir and Western Hemlock. Recreation in the area is abundant with the lake an ideal location for water activities like sailing, canoeing and swimming. See more photos. CAMPING Waldo Lake’s three developed campgrounds usually open in late June or early July, depending on snowpack. North Waldo, Islet, and Shadow Bay have over 200 developed sites with toilets, potable water and boat ramps at Waldo Lake. Many campsites can be reserved up to six months in advance of arrival through recreation.gov. Campgrounds are often full mid-August into September. Waldo also has nearly 50 primitive dispersed campsites around the lake. Dispersed campsites are free, but there are rules for staying in a dispersed site, including how to dispose properly of waste (there are no restroom facilities at these sites). BOATING Waldo Lake is one of the clearest lakes in Oregon and to help maintain the purity, only electric boats motors traveling less than 10 mph. Non motorized boats such as canoes, kayaks and paddle boards are popular along with the occasional sailboat. Boaters may debark at Waldo’s two islands for a picnic or scampering around, but may not camp there overnight. Boating Regulations & Boating Safety: Oregon State Marine Board manages boating regulations. Visit their website for boating regulations and safety information. They also have links to information about water levels. HIKING/BIKING Waldo Lake borders the Waldo Lake Wilderness area. There are numerous trails that lead to nearby wilderness lakes. Mountain bikers may use any trail marked for the sport. The 20-mile Waldo Lake Trail (also known as the Jim Weaver Loop trail) around the lake is a popular ride. But at 5,400 feet in elevation the trail is covered with snow late into the season. Early fall when the trail dries out and the mosquitoes die down it’s a great ride. FACTS & FIGURES Lake Area: 6,298 acres (9.8 square miles) Lake Surface Elevation: 5,414 feet Maximum Depth: 420 feet Average depth: 128 feet Length of shoreline: 21.7 miles Basin Formation: Tectonic fault block subsidence modified by glaciers Soils: Thin layer (average between 3 and 6 feet) of moderately weathered volcanic ash and boulders from glacial outwash over basaltic bedrock History of the Waldo Lake Area