Based on the latest information available, the boat ramp named Big Muskego Lake - Big Muskego and Bass Bay - Boxhorn Launch is located in Muskego, Wisconsin, and services the Big Muskego Lake. This boat ramp is open year-round and is operated and maintained by the Waukesha County Parks and Land Use Department.

The Big Muskego Lake - Big Muskego and Bass Bay - Boxhorn Launch is a concrete boat ramp, which is approximately 20 feet wide and provides easy access to the lake. The lake is a popular destination for recreational boating and fishing. The lake is open to a variety of watercraft, including motorized boats, sailboats, canoes, and kayaks.

It is important to note that the Big Muskego Lake - Big Muskego and Bass Bay - Boxhorn Launch has certain rules and regulations that visitors must adhere to. For example, boats must not exceed the speed limit of 35 mph and must stay at least 150 feet away from shorelines, docks, and other boats. Additionally, visitors must follow all Wisconsin fishing regulations and obtain the necessary licenses before fishing in the lake.

Overall, the Big Muskego Lake - Big Muskego and Bass Bay - Boxhorn Launch is a well-maintained boat ramp that provides easy access to the beautiful Big Muskego Lake. Visitors can enjoy a variety of water activities on the lake, making it a popular destination for both locals and tourists alike.