The Cooper Lake Boat Launch is located in the state of Washington, with its coordinates being latitude: 47.4259758 and longitude: -121.17298126. This boat ramp is a concrete ramp that is suitable for launching boats. It is wide enough to accommodate a variety of watercraft, including larger boats and trailers.

The Cooper Lake Boat Launch provides access to the Cooper Lake, which is a popular destination for boating, fishing, and other water-related activities. The lake is approximately 182 acres in size and is located in the Snoqualmie National Forest.

According to the most recent information available, motorized boats are permitted on Cooper Lake, as long as they comply with Washington State boating laws and regulations. Non-motorized craft such as kayaks, canoes, and paddleboards are also allowed on the lake.

In summary, the Cooper Lake Boat Launch is a concrete ramp that provides access to the 182-acre Cooper Lake in Washington. It is wide enough to accommodate a variety of watercraft, including larger boats and trailers, and both motorized and non-motorized craft are permitted on the water.