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 construction]
12. earth dams

Anotations

Scope note:

Dams built using materials that are excavated, transported, and placed by hydraulic methods. Coarse materials of the slush settle at the outer edge and finer materials settle towards the center, forming an impervious central core. Compaction is not done, and poor drainage and settlement may cause failure of this type of dam.