The boat ramp named Mississippi River - Pool 11 Boat Launch is not located in Arkansas. Instead, it is located in Wisconsin, specifically in the town of Clayton in Crawford County. The latitude and longitude provided in the question are correct, but the state is incorrect.

The Mississippi River - Pool 11 Boat Launch is a concrete boat ramp that provides access to the Mississippi River. It is a double ramp with a width of 20 feet and is suitable for launching small to medium-sized boats. The boat ramp is managed by the US Fish and Wildlife Service and is open year-round.

The Mississippi River - Pool 11 Boat Launch provides access to Pool 11 of the Mississippi River, which is located between Lock and Dam 10 in Guttenberg, Iowa, and Lock and Dam 11 in Dubuque, Iowa. Pool 11 is a popular fishing destination and is known for its abundance of catfish, walleye, and northern pike.

The Mississippi River - Pool 11 Boat Launch permits a range of watercraft, including motorized boats, canoes, kayaks, and paddleboards. However, users are advised to check local regulations and restrictions before launching their boats to ensure compliance with any rules or restrictions.