Based on the latest information available, the boat ramp named Southeast 296th Street 22601 in Black Diamond, Washington is a concrete boat ramp that is approximately 16 feet wide. It provides access to Lake Sawyer, which is a 280-acre freshwater lake located in King County.

This boat ramp is suitable for launching small watercraft, such as fishing boats, kayaks, canoes, and paddleboards. However, it should be noted that motorized boats are also allowed on Lake Sawyer, provided they comply with the lake's speed limit and other regulations.

Overall, Southeast 296th Street 22601 boat ramp is a popular destination for locals and tourists who want to enjoy fishing, boating, and other water-based activities on Lake Sawyer. It is well-maintained and easily accessible, making it an ideal launching point for all types of watercraft.