Elizabeth Lake, Natural sag pond in the Sierra Pelona Mountains, Los Angeles County, California, United States

Elizabeth Lake is a natural sag pond lying directly on the San Andreas Fault in the northern Sierra Pelona Mountains of northwestern Los Angeles County, at 3,228 feet (984 m) within Angeles National Forest. It is a perennial lake that can dry up entirely in drought years, as it did between 2013 and 2023. The community of Elizabeth Lake sits on its shore, administratively within the unincorporated community of Lake Hughes.

Elizabeth Lake is a sag pond formed by movement along the San Andreas Fault. In 1780 the Spanish priest Junípero Serra named it La Laguna de Diablo; after 1834 it was briefly La Laguna de Liebre, and in the 1840s it became La Laguna de Chico Lopez for Francisco "Chico" Lopez, who grazed cattle on its banks. The first building was Miguel Ortiz's adobe, and the lake lay on the El Camino Viejo inland route.

In 1780 the priest Junípero Serra named the lake La Laguna de Diablo, Devil's Lake, because people nearby believed a pet of the devil lived in it. That creature became the Elizabeth Lake Monster, described as a dragon with leathery wings and scaly skin. After 1834 it was briefly La Laguna de Liebre, Jackrabbit Lake, and in the 1840s La Laguna de Chico Lopez, for Francisco "Chico" Lopez, who grazed cattle on its banks.

The lake sits at 3,228 ft (984 m) inside Angeles National Forest, south of the western Antelope Valley, with the community of Elizabeth Lake on its shore. It is a perennial sag pond but dried up completely between 2013 and 2023 during drought, so check water conditions before planning a visit. Access is via Elizabeth Lake Road, which meets San Francisquito Canyon Road at Andrada Corner.

The lake is a sag pond formed directly on the San Andreas Fault, one of a chain that includes Hughes Lake and the Munz Lakes, all draining into the upper Santa Clara River watershed. It sits at 3,228 feet inside Angeles National Forest and went dry from 2013 to 2023 during the drought.