- Bear Creek (Lushootseed: tubaʔal) is a tributary of the Sammamish River in King County, Washington, United States. The stream flows approximately 12.4 miles (20.0 km) from its source at Paradise Lake near Maltby to a confluence with the Sammamish River at Marymoor Park in Redmond. The creek has two tributaries, Cottage Lake Creek and Evans Creek, and a watershed of 32,100 acres (13,000 ha).