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. erosion protection works

Anotations

Scope note:

Long, narrow, permeable or impermeable protective structures built out from a seashore to check or increase erosion. For similar structures located along a river or stream bank, use "wing dams"; when such structures are built to control shoaling, use "jetties (erosion protection works)."