Based on the available information, Ennis Riffle is a boat ramp located in Oregon. The coordinates of the boat ramp are latitude: 42.56331635 and longitude: -123.57761383.

Ennis Riffle is a concrete boat ramp that is approximately 20 feet wide. It provides access to the Rogue River, a popular fishing destination known for its salmon and steelhead runs. The Rogue River is open to a variety of watercraft, including boats, kayaks, canoes, and rafts.

According to the latest information available, Ennis Riffle is operated by the Oregon Department of Fish and Wildlife. It is accessible year-round and is equipped with a parking area, restrooms, and a fish cleaning station. Fishermen and boaters are advised to check the latest regulations and restrictions before using the ramp, as they may change depending on the season and the type of fish in the river.