According to the latest available information, the Grouse Creek Campground Road boat ramp in Adams County, Idaho is a concrete ramp that is approximately 12 feet wide. It serves the Brownlee Reservoir, which is a popular destination for fishing, boating, and other recreational activities. The reservoir spans across Idaho, Oregon, and Washington and is known for its large populations of bass, catfish, and crappie.

The Grouse Creek Campground Road boat ramp is suitable for a wide variety of watercraft, including motorboats, jet skis, kayaks, and canoes. However, users should be aware that certain restrictions may apply. For example, there may be seasonal closures or restrictions on the use of certain watercraft in certain areas of the reservoir for safety or environmental reasons.

Overall, the Grouse Creek Campground Road boat ramp is a convenient and well-maintained facility that provides easy access to the spectacular Brownlee Reservoir. Whether you're an experienced angler or a novice boater, this boat ramp is sure to provide you with a great experience on the water.