### Question
How does the law 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 12-RECLAMATION AND IRRIGATION OF LANDS BY FEDERAL GOVERNMENT > SUBCHAPTER I-GENERAL PROVISIONS**

