After conducting research, I was unable to find any information about a boat ramp named Lake's End Campground in Oregon with the provided latitude and longitude coordinates. It's possible that the information provided is inaccurate or outdated.

However, I can provide general information about boat ramps in Oregon. Most public boat ramps in Oregon are owned and operated by the Oregon State Marine Board and provide access to lakes, rivers, and bays throughout the state. The size and width of the boat ramp can vary depending on the location and the size of the body of water it services.

Boats of all types and sizes are generally permitted on most bodies of water in Oregon, but some lakes and rivers may have restrictions on boat size or motor type. It's important to check with the local authorities or the Oregon State Marine Board before launching a boat to ensure compliance with any rules and regulations.