The San Diego River is a vital waterway in southern California, flowing approximately 52 miles from the Cuyamaca Mountains to the Pacific Ocean. It serves as an important natural resource for the surrounding communities, providing water for irrigation and recreation. The river's watershed encompasses diverse ecosystems, including wetlands and riparian habitats, which support various wildlife species. Efforts to restore and preserve the San Diego River have been ongoing, aiming to enhance its ecological health and improve access for outdoor activities like hiking and kayaking.