The Green River Access Site 3 Boat Launch is a concrete boat ramp located in the state of Wyoming. According to the latest information available, the boat ramp is approximately 20 feet wide and is suitable for small to medium-sized watercraft. The ramp provides access to the Green River, which is a popular spot for fishing, boating, and other water activities.

The Green River is a 730-mile long river that flows through Wyoming, Colorado, and Utah. It is a popular destination for anglers, who come to fish for trout, catfish, and other species. The river is also used for boating, kayaking, and other water sports.

The Green River Access Site 3 Boat Launch is open to the public and is operated by the Wyoming Game and Fish Department. The site provides parking for vehicles and trailers, and there are restrooms and other amenities available for visitors.

In terms of the types of watercraft that are permitted on the Green River, the latest information available suggests that most types of boats are allowed, including motorized and non-motorized watercraft. However, visitors are advised to check with local authorities for any specific regulations or restrictions that may apply.