The upper portion of Harker Creek is surrounded by steep hills that extend as high as 30 m (100 ft) above the creek. At its highest point, the creek is at approximately 390 m (1280 ft) elevation.
The upper reaches of Harker Creek are bordered by steep hills that rise as high as 30 meters (100 feet) above the creek. At its highest point, the creek is situated at roughly 390 meters (1280 feet) in elevation.