I apologize, but there seems to be some confusion in your question. The coordinates provided for the boat ramp named East Walnut Street Oregon County are actually in Missouri, not Iowa. Additionally, I was unable to find any information on a specific boat ramp named East Walnut Street Oregon County.

However, I can provide general information on how to determine the type of boat ramp, its width, the body of water it services, and the kind of craft permitted on the water. This information can typically be found through online resources such as state or local government websites, or through contacting the relevant authorities such as the state's Department of Natural Resources or local parks and recreation departments.

- Type of boat ramp: Boat ramps can come in various types such as concrete, asphalt, or gravel. The type of boat ramp can affect its durability and ease of use.
- Width of boat ramp: The width of a boat ramp can vary, but in general, a standard width for a single-lane ramp is 12-16 feet.
- Body of water serviced: The body of water that a boat ramp services can vary from a lake, river, or ocean. It is important to ensure that the water is suitable for the type of craft being used and to adhere to any regulations or restrictions.
- Kind of craft permitted: The kind of craft permitted on the water may be influenced by factors such as the size and depth of the water and any specific regulations or restrictions in place. It is important to check for any restrictions before launching a boat.

I hope this information is helpful!