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Orange County, California, United States of America (33.75004 -117.87049)
There is no formal geographic division between North and South County, although there is a northeast to southwest topographic transition from elevated areas inland to the lower coastal band, and, perpendicular to that gradient, the Santa Ana River roughly divides the county into northwestern and southeastern sectors.
Palm Desert, Fresco Lane, Palm Desert, Riverside County, California, United States of America (33.74080 -116.36937)
Coordinates: 33.67067 -116.42551 33.81008 -116.30205 - Minimum elevation: 9 m - Maximum elevation: 1,139 m - Average elevation: 145 m
Madeira Park, Portola Glen, Ulmar, Livermore, Alameda County, California, United States of America (37.68482 -121.76067)
Coordinates: 37.68453 -121.76105 37.68499 -121.76053 - Minimum elevation: 119 m - Maximum elevation: 270 m - Average elevation: 160 m