### Question
How is the term estuary defined?


### Answer
The term **estuary** is defined in *33 U.S.C. § 2902* as the following:

> a part of a river or stream or other body of water that has an unimpaired connection with the open sea and where the sea water is measurably diluted with fresh water derived from land drainage

#### Citation:
  - *33 U.S.C. § 2902*
  - Heading: **CHAPTER 42-ESTUARY RESTORATION**

