Established in 1958, this was the first designated nature sanctuary in Canada.
The park contains rare Garry oak ecosystems, which are among the most endangered habitats in Canada.
The trails connect directly to the regional Galloping Goose Trail, facilitating access for cyclists.
Upper and Lower Thetis Lakes are connected by a narrow channel that is navigable by canoe or kayak.
The park's geology features distinctive bluffs formed by glacial retreat during the last ice age.
Thetis Lake Regional Park is a 833-hectare protected area encompassing Upper and Lower Thetis Lakes and Prior Lake. It is widely recognized as the first nature sanctuary established in Canada, created in 1958. The park features a diverse trail network spanning over 40 kilometers through Douglas fir forests and rocky outcroppings. Visitors can access swimming beaches at the main beach area on Lower Thetis Lake. The landscape is characterized by its glacial-carved topography and sensitive Garry oak ecosystems. The park serves as a primary hub for hiking, swimming, and paddling within the Capital Regional District. It remains a key migration point and habitat for various local bird and wildlife species.
The rocky bluffs overlooking Lower Thetis Lake provide a clear vantage point of the water and surrounding tree canopy.
Stay on marked trails to protect the fragile Garry oak ecosystem.
The main beach area becomes very crowded on sunny weekends; seek quieter spots by hiking toward the Upper Lake.
Bring water as there are no potable water sources within the trail system.
Do not attempt to swim in areas marked as restricted or near the narrow channel connectors if you are an inexperienced swimmer.
Dogs must be leashed in designated areas; pack out all trash to maintain the sanctuary status.
