Southern California's Largest Reservoir Refilled After 3-Year Drought.

Southern California's largest reservoir, Diamond Valley Lake, is being refilled to its full capacity after being drained during the state's driest three years on record. The refilling is due to the abundance of water from the winter storms that eased drought conditions across the state. The reservoir is a backbone of Southern California's water storage system and holds twice as much water as all of the region's other surface reservoirs combined. However, officials warn that the state's rapid swings from extreme wetness to extreme dryness are becoming more common, and the lake will undoubtedly be needed for dry times again.