Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Single Built Works (hierarchy name)
5. single built works (built environment)
6. [single built works by specific type]
7. [single built works by function]
8. hydraulic structures
9. [hydraulic structures by function]
10. dams (hydraulic structures)
11. [dams by function]

Anotations

Scope note:

Artificial dams of a type placed in a watercourse to divert water, as into a channel for navigation or irrigation; barrages raise the water level by only a few feet and are not used for the purpose of water storage.