Geology
The Kern River Canyon was created primarily as a result of tectonic forces, and not just by the erosional force of the river. The geologically active Kern Canyon Fault runs the length of the canyon.
The Kern River Oil Field is adjacent to the river on the north, just before the river flows into Bakersfield. The large oil field, on low hills which rise gradually into the Sierra foothills, formerly allowed much of its produced water to drain directly south into the river. However, modern environmental regulation ended this practice, and the contaminated water is now cleaned at water treatment plants and used to irrigate farms in the valley to the west.
Read more about this topic: Kern River