### Question
How does the law define event of national significance?


### Answer
Under *33 U.S.C. § 4010*, **event of national significance** is defined as:

> a hypoxia or harmful algal bloom event that has had or will likely have a significant detrimental environmental, economic, subsistence use, or public health impact on an affected State

#### Citation:
  - *33 U.S.C. § 4010*
  - Heading: **CHAPTER 53-HARMFUL ALGAL BLOOM AND HYPOXIA RESEARCH AND CONTROL**

