Based on the information available, the boat ramp named Natrona County is located in Wyoming and has a latitude of 42.46839523 and a longitude of -106.86553955. It is a boat ramp that provides access to a body of water in the area.

According to the official website of Natrona County, the boat ramp is located at the Alcova Reservoir, which is a popular fishing and boating destination in the area. The Alcova Reservoir is situated on the North Platte River and covers an area of approximately 2,470 acres.

The boat ramp at Natrona County is said to be wide enough to accommodate a range of watercraft. However, the specific width of the boat ramp is not provided on the official website. It is recommended that boaters check the ramp's condition and size before launching their watercraft.

As for the types of watercraft allowed on the Alcova Reservoir, the official website indicates that motorized boats are permitted. However, the use of personal watercraft such as jet skis is prohibited. It is also important to note that all watercraft are subject to inspection for aquatic invasive species before launching.

In conclusion, the boat ramp named Natrona County is located at the Alcova Reservoir in Wyoming, providing access to motorized boats on the North Platte River. While the specific width of the boat ramp is not provided, it is said to be wide enough to accommodate a range of watercraft.