### Question
How does GENERAL PROVISIONS define Southern California?


### Answer
Under *43 U.S.C. § 390h*, **Southern California** is defined as:

> those portions of the counties of Imperial, Los Angeles, Orange, San Bernadino, Riverside, San Diego, and Ventura within the south coast and Colorado River hydrologic regions as defined by the California Department of Water Resources

#### Citation:
  - *43 U.S.C. § 390h*
  - Heading: **CHAPTER 11A-BOARD ON GEOGRAPHIC NAMES > SUBCHAPTER I-GENERAL PROVISIONS**

