Three Sisters Falls is a 120-foot waterfall on Boulder Creek in San Diego County, California, in the Southern California/Northern Baja Coast region. It lies about 6 miles southeast of San Diego Country Estates and roughly 18.9 miles northeast of Santee as the crow flies.
At 120 feet it is taller than the typical California waterfall of about 70 feet, ranking 91st of 286 with a recorded height.
The Southern California/Northern Baja Coast is a region of coastal terraces, chaparral hills and oak-sycamore canyons with a mild, dry climate and dense settlement. Waterfalls are seasonal, running mainly after winter rains. Boulder Creek carries 6 recorded waterfalls, and Three Sisters Falls is the tallest of them.
San Diego County holds 18 recorded waterfalls, and several are close by. Devils Punch Bowl, is under a mile away. Cedar Creek Falls, 90 feet high, is about 2.7 miles away. Mildred Falls, is about 3.3 miles away.
Three Sisters Falls is located at 32.9709° N, 116.6886° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The creek name is confirmed against the federal Geographic Names Information System. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this waterfall yet.