According to the latest information available, the McKenzie County boat ramp in North Dakota is located at latitude 48.10496902 and longitude -103.10749817. This boat ramp is a concrete ramp that allows for easy launching and retrieval of boats.

The ramp is approximately 18 feet wide, which should be sufficient for most boats. It has a gentle slope, making it easy for boaters to maneuver their boats into the water.

The McKenzie County boat ramp services Lake Sakakawea, which is a large reservoir created by the Garrison Dam on the Missouri River. This body of water is known for its great fishing and boating opportunities.

In terms of permissible watercraft, Lake Sakakawea allows for a variety of boats, including fishing boats, pontoon boats, ski boats, and personal watercraft. However, it is important to note that there are certain regulations in place regarding boat size and speed limits, which must be followed by all boaters.

Overall, the McKenzie County boat ramp in North Dakota provides a convenient and accessible location for boaters to launch their watercraft and enjoy the beautiful Lake Sakakawea.