Pilot Knob is a peak in Imperial County, California. Pilot Knob is located 8 miles (13 km) southeast of Ogilby, It rises to an elevation of 876 feet (267 m). Pilot Knob is a rocky landform, geologically a Volcanic plug, west of Yuma, Arizona–Winterhaven, California; it is connected to the Cargo Muchacho Mountains, the central portion of the mountains being about 7 miles (11 km) north. Pilot Knob was named for its prominence as a landmark for riverboat traffic in the 19th-20th centuries on the Colorado River which borders Winterhaven–Yuma. Pilot Knob is an Area of Critical Environmental Concern administered by the Bureau of Land Management.