Swan Lake Christmas Hill Nature Sanctuary is a nature reserve located in Saanich, British Columbia. The sanctuary includes a lake, adjacent marshy lowlands, and the Nature House, as well as a good part of the summit regions of Christmas Hill. The sanctuary land surrounding the lake covers 43.4 hectares (107 acres) in addition to the 9.4 hectare (23 acre) lake. In the winter flooding stage, the lake can cover up to 32.4 hectares (80 acres) of the low-lying lands around the lake.