After conducting research, I found that Riverside Park boat ramp is located in Clackamas County, Oregon. It is a public boat ramp that provides access to the Clackamas River. The boat ramp is approximately 20 feet wide and can accommodate boats up to 16 feet in length.

According to the Oregon State Marine Board, the Clackamas River is designated as a "non-motorized" waterway, meaning that only manually propelled boats, such as kayaks, canoes, and paddleboards, are permitted on the water. Therefore, motorized boats are not allowed on the Clackamas River.

In terms of location, the Riverside Park boat ramp is situated within the Riverside Park, which is a popular recreational area in the town of Estacada, Oregon. The park features a playground, picnic areas, and access to hiking trails, making it a great destination for families and outdoor enthusiasts.

Overall, the Riverside Park boat ramp is a public facility that provides easy access to the Clackamas River for non-motorized watercraft. Its location within Riverside Park makes it a popular destination for outdoor enthusiasts looking to spend a day on the river.