The South Fork Kern Watershed (HUC 18030002) covers an area of 348,621 acres in eastern California. The hydrology of the watershed is characterized by snowmelt runoff from the Sierra Nevada Mountains, which feeds into the South Fork Kern River. The watershed receives an annual average precipitation of 19 inches, which falls mostly as snow between October and April. The snowpack of the watershed is an important source of water for the region and is closely monitored by the California Department of Water Resources. The watershed is home to several important reservoirs, including Lake Isabella, which provides water for irrigation and municipal use. The reservoirs also support recreational activities such as fishing and boating. In recent years, the region has experienced severe drought conditions, which have impacted water availability and hydrology.