Based on the latest information available, the South Lake Road Winfield boat ramp in Kansas is a public boat ramp that provides access to the waters of the Walnut River. It is located at latitude 37.3514595 and longitude -96.86477661.

The boat ramp is relatively narrow, with a maximum width of around 20 feet, which can accommodate small boats and watercraft. However, it may not be suitable for larger boats and vessels.

As mentioned, the South Lake Road Winfield boat ramp services the Walnut River, a tributary of the Arkansas River that flows through central Kansas. The Walnut River is popular for its scenic beauty and is a great spot for fishing, kayaking, and other water activities.

Regarding the kind of craft that are permitted on the water, it is important to note that regulations may vary depending on the season and location. However, based on the latest available information, the Walnut River allows for a variety of boats and watercraft, including canoes, kayaks, rowboats, and small motorized boats.

In summary, the South Lake Road Winfield boat ramp in Kansas is a public boat ramp that provides access to the Walnut River. It is relatively narrow and suitable for small boats and watercraft. The Walnut River is a popular destination for water activities and allows for a variety of boats and watercraft.