### Question
How is the term Columbia River Basin defined?


### Answer
The term **Columbia River Basin** is defined in *33 U.S.C. § 1275* as the following:

> the entire United States portion of the Columbia River watershed

#### Citation:
  - *33 U.S.C. § 1275*
  - Heading: **CHAPTER 26-WATER POLLUTION PREVENTION AND CONTROL > SUBCHAPTER I-RESEARCH AND RELATED PROGRAMS**

