### Question
How is the term irrigation block defined?


### Answer
The term **irrigation block** is defined in *43 U.S.C. § 485a* as the following:

> an area of arid or semiarid lands in a project in which, in the judgment of the Secretary, the irrigable lands should be reclaimed and put under irrigation at substantially the same time, and which is designated as an irrigation block by order of the Secretary.

#### Citation:
  - *43 U.S.C. § 485a*
  - Heading: **CHAPTER 11A-BOARD ON GEOGRAPHIC NAMES > SUBCHAPTER X-PAYMENT OF CONSTRUCTION CHARGES**

