Based on the latest information available, the boat ramp located at 102B Avenue Northwest in Williams County, North Dakota is a public boat ramp. It is approximately 16 feet wide and services the Lake Sakakawea Reservoir, which is a popular destination for recreational boating, fishing, and other water activities.

The Lake Sakakawea Reservoir is a large body of water that spans over 180 miles in length and covers an area of more than 382,000 acres. Due to its size and popularity, a wide range of watercraft are permitted on the lake, including motorboats, jet skis, kayaks, canoes, and sailboats.

It should be noted that regulations and restrictions may vary depending on the specific location within the reservoir. Visitors are encouraged to check with local authorities or consult official resources for up-to-date information on permitted watercraft and other regulations.

Overall, the boat ramp at 102B Avenue Northwest in Williams County provides convenient access to one of North Dakota's most popular recreational destinations, offering opportunities for fishing, boating, swimming, and other waterfront activities.