The Katy Trail Saint Charles boat ramp is located in Saint Charles, Missouri, and it is primarily used for launching small watercraft such as kayaks and canoes. The ramp is relatively narrow, with a width of around 10-12 feet, and it is designed to accommodate small craft with a capacity of up to 16 feet in length.

The boat ramp services the Missouri River, which is one of the most significant waterways in the state and is a popular destination for boaters, anglers, and other water enthusiasts. The Missouri River stretches for more than 2,300 miles, and it flows through seven states, including Missouri.

According to the latest information available, the Katy Trail Saint Charles boat ramp is open to the public year-round, and it is free to use. However, visitors should be aware that the ramp may be closed during periods of high water or flooding, and they should always check local weather and river conditions before heading out on the water.

In terms of permitted craft, the Katy Trail Saint Charles boat ramp is designed to accommodate smaller watercraft such as kayaks, canoes, and small fishing boats. However, visitors should be aware that there are strict regulations regarding the use of motorized watercraft on the Missouri River, and they should always check local regulations before launching their watercraft.