This 456-acre unit is located three miles north of the town of Carnation. As the largest unit it has the greatest diversity of habitats. It was purchased in 1970 to provide hunting opportunities and other wildlife recreation. WDFW created a network of fields ranging in size from 20 to 40 acres, ringed with brushy drainages and hedgerows. Seasonal flooding is common and can inundate 20 to 70 percent of the unit. Stillwater has three small oxbow lakes (totaling about three acres), two that are connected to Harris Creek during high flow events and one that is a separate drainage. Harris Creek runs through the center of the property for about 10,500 feet before emptying into the Snoqualmie River. This unit also has 8,500 feet of river shoreline. An abandoned railroad trestle and a footbridge cross Harris Creek. The major uses here are waterfowl and pheasant hunting, fishing nature observation, and hiking. A King County Parks and Recreation Department bicycle/walking/running trail skirts the unit�s eastern boundary for three-fourths of a mile. There are two parking areas a mile apart adjacent to Highway 203 with reader boards.