Based on the latest information available, the boat ramp named Island Park in Oregon is a concrete ramp that is approximately 20 feet wide. It services the Willamette River, one of the major tributaries of the Columbia River, which flows through the heart of Eugene.

The ramp is specifically designed for small to medium-sized watercraft such as motorboats, kayaks, canoes, and jet skis. However, it's important to note that there are size and weight restrictions in place for larger boats, so it's best to check with local authorities before attempting to launch any vessel over 25 feet in length or weighing more than 5,000 pounds.

Overall, Island Park boat ramp is a popular spot for boaters and anglers looking to access the Willamette River. It's conveniently located near a number of parks and recreational areas, including the Island Park and Alton Baker parks, which offer ample opportunities for hiking, biking, picnicking, and other outdoor activities.