After conducting research, I was unable to find any information about a boat ramp named Kaercher Creek in Pennsylvania with the given latitude and longitude coordinates. It is possible that the information provided is incorrect or outdated.

However, there is a Kaercher Creek Park located in Hamburg, Pennsylvania that features a boat launch for non-motorized watercraft such as kayaks and canoes. The park is situated on Kaercher Creek, which flows into the Schuylkill River. The width of the boat ramp is not specified on the park's website.

It is important to note that regulations and permitted watercraft may vary depending on the specific body of water. It is recommended to research and follow all local laws and guidelines before using any boat ramp or waterway.