Elizabeth Lake is a natural sag pond that lies directly on the San Andreas Fault in the northern Sierra Pelona Mountains, in northwestern Los Angeles County, southern California. The lake, at 3,228 ft in elevation, is within the Angeles National Forest. It is a natural perennial lake, but may dry up entirely during drought years. It is south of the western Antelo…Elizabeth Lake is a natural sag pond that lies directly on the San Andreas Fault in the northern Sierra Pelona Mountains, in northwestern Los Angeles County, southern California. The lake, at 3,228 ft in elevation, is within the Angeles National Forest. It is a natural perennial lake, but may dry up entirely during drought years. It is south of the western Antelope Valley.