Davis Lake Provincial Park, Nature reserve in Fraser Valley Regional District, Canada

Davis Lake Provincial Park is a 192-hectare provincial park in a narrow valley floor about 20 km north-northeast of Mission, at the transition from the Lower Mainland to the Coast Mountains. Its core is the 26-hectare Davis Lake, 30 m deep, fed by Davis Creek and Murdo Creek; the park stretches up the surrounding slopes to 300–400 m. Two beaches lie at the north and south shores.

Davis Lake Provincial Park was established in October 1963 at 185 acres (about 75 hectares); its status and size were changed several times afterwards. Long before settlers arrived, the valley was hunting and fishing ground for Stó:lō First Nations. Logging in the 1940s removed the original forest, and the present stand of Western Hemlock regrew on those cutblocks.

The lake and its shores lie in the territory of the Stó:lō First Nations, who used the area for settlement, hunting and fishing long before settlers arrived. Today the park is a day-use site: two swimming beaches, one at the north and one at the south end of the lake, plus trails laid out through the forest. Camping is allowed but no cleared pitches exist, and there are no sanitary facilities.

Access to the beaches and campground at the south end of the lake is walk-in only, along a 1 km unmaintained gravel road; the park has no sanitary facilities and no prepared campsite areas, though camping is allowed. Fishing requires a permit. The trail to McDonald Falls leaves from the Lost Creek Forest Service Road, the continuation of Sylvester Road, just east of the lake and descends to Murdo Creek.

McDonald Falls on Murdo Creek drops about 24 metres in several steps. It is reached by walking downhill from the Lost Creek Forest Service Road, the continuation of Sylvester Road, just east of the lake. The park has no facilities, so the falls are usually visited on a day trip.