http://www.portlandonline.com/parks/finder/index.cfm?action=ViewPark&PropertyID=857&c=38308 Wilkes Park], Portland Parks and Recreation website (accessed 5 March 2011) Since then, the city's parks department and its Bureau of Environmental Services partnered to acquire 20 acres of land at the headwaters of Wilkes Creek in March 2011 to create a second park and natural preservation area.