Old Man Riffle is a stretch of rapids in Josephine County, Oregon, in the Klamath Mountains/California High North Coast Range region. It lies about 7.9 miles west of Merlin and roughly 38.6 miles northwest of Medford as the crow flies.
The Klamath Mountains and California High North Coast Range are a rugged, geologically complex region of steep ridges and deep river canyons with mixed conifer and hardwood forest, including redwoods near the coast. Wild rivers and steep creeks drop through rocky gorges.
There are 25 recorded rapids in Josephine County. Ennis Riffle, is under a mile away. Lower Galice Riffle, is about 1.5 miles away. Upper Galice Riffle, is about 1.7 miles away.
Old Man Riffle is located at 42.5560° N, 123.5665° W. The listing is based on the USGS Geographic Names Information System, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this rapid yet.