Tiernan Boat Ramp is located in the state of Oregon, specifically in Lane County. It is a public boat ramp that provides access to the Coast Fork Willamette River. The ramp is made of concrete and is 20 feet wide, making it suitable for small to medium sized boats. According to the latest information available, the ramp is in good condition and is well-maintained.

The Coast Fork Willamette River is a popular destination for anglers, kayakers, and other recreational boaters. The river is known for its scenic views and abundant wildlife, including fish, birds, and mammals. Fishing is a popular activity on the river, with anglers targeting species such as trout, bass, and steelhead.

In terms of permitted watercraft, Tiernan Boat Ramp allows for a variety of vessels, including motorized and non-motorized boats. However, it is important to note that certain restrictions may apply depending on the time of year and specific regulations in place. Boaters should always check with local authorities and adhere to all safety and environmental guidelines.

Overall, Tiernan Boat Ramp is a well-maintained and accessible ramp that provides access to a beautiful and popular waterway in Oregon.