Based on the latest information available, the Marsing Murphy Road 12985 boat ramp in Owyhee County, Idaho is a concrete boat ramp that is 20 feet wide. It provides access to the Snake River, which is a major waterway in the region. The Snake River serves as a popular location for recreational boating and fishing, with a variety of fish species available including smallmouth bass, rainbow trout, and catfish.

The boat ramp is designed to accommodate a variety of watercraft, including motorized boats, canoes, kayaks, and paddleboards. However, it is important to note that there may be restrictions on the use of certain types of watercraft or motors based on local regulations or seasonal conditions. It is always a good idea to check with local authorities or the managing agency for the area before launching your watercraft.

Overall, the Marsing Murphy Road 12985 boat ramp provides convenient access to the Snake River for boating and fishing enthusiasts in the Owyhee County area. Its concrete construction and 20-foot width make it a sturdy and reliable option for launching a variety of watercraft.