The City of Maple Valley obtained the Lake Wilderness Park from King County in January 2003. At 117 acres, Lake Wilderness Park is a large regional park with lots of prime shoreline, preserved forestland, and meandering pathways. Running through the middle of Lake Wilderness Park is Jenkins Creek, a tributary for Big Soos Creek, which empties into the Green River. The park also includes three wetlands. A variety of birds and animals also make their home in Lake Wilderness Park, including deer, beaver, raccoon, hawks, wrens, and ruffed grouse. Annual events held in Lake Wilderness Park include: Fishing Derby & Fishermen's Breakfast, Maple Valley Days, Music in the Park, 4th of July Celebration with Fireworks, Seafair Kid's Festival and Family Concert, Outdoor Movie Under the Stars, Wilderness Games, and Holiday Lights Celebration. Families and children are the focus of many amenities at Lake Wilderness Park.