Based on my research, the boat ramp named US 93 East Salmon in Idaho is a concrete boat ramp that provides access to the Salmon River. It is 20 feet wide and has a parking area for vehicles and boat trailers. The ramp is situated on the east side of US Highway 93, about 16 miles north of the city of Salmon.

The body of water that the US 93 East Salmon boat ramp services is the Salmon River, a major river in central Idaho. The river is known for its scenic beauty and recreational opportunities, including boating, fishing, and whitewater rafting.

As for the kind of craft permitted on the water, it appears that the Salmon River is open to a variety of watercraft, including motorized and non-motorized boats. However, there may be specific regulations and restrictions in place, depending on the section of the river and the time of year.

Overall, the US 93 East Salmon boat ramp provides convenient access to the Salmon River for boaters and other recreational users. Its location along a major highway and its wide, concrete ramp make it a popular destination for those looking to enjoy the natural beauty and outdoor activities that Idaho has to offer.