The North Fork of the Santa Ana River originates high in the San Bernardino Mountains, where snowmelt, springs, and seasonal runoff drain the forested slopes below San Gorgonio Mountain. Its headwaters form in a rugged alpine environment of granite peaks, meadows, and mixed conifer forest before joining the main Santa Ana River system, which ultimately flows nearly 100 miles to the Pacific Ocean. The North Fork plays an important role in supplying cold, clear mountain water that supports native wildlife, riparian habitats, and downstream water resources, making it one of the key tributaries in Southern California’s largest river system.
