Rough and Ready Island

Rough and Ready Island is an island in the San Joaquin River, in the Sacramento–San Joaquin River Delta. It is in San Joaquin County, California, and its coordinates are 37.95083°N, -121.36139°W. The United States Geological Survey measured its elevation as 0 ft in 1981. It appears on 1913 and 2015 USGS map of the area.

The Rough and Ready Island Naval Supply Depot is located on the island.