Mill Creek is a 17.8-mile-long stream, originating in the San Bernardino Mountains, in San Bernardino County, California. It is a major tributary of the Santa Ana River. Their confluence occurs just downstream of the upper Santa Ana Canyon mouth. Part of the upper creek flows through San Bernardino National Forest, with the headwaters, being in the Sa…
Mill Creek is a 17.8-mile-long stream, originating in the San Bernardino Mountains, in San Bernardino County, California. It is a major tributary of the Santa Ana River. Their confluence occurs just downstream of the upper Santa Ana Canyon mouth. Part of the upper creek flows through San Bernardino National Forest, with the headwaters, being in the San Gorgonio Wilderness.
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