Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Settlements and Landscapes (hierarchy name)
5. landscapes (environments)
6. natural landscapes
7. bodies of water (natural)

Narrower term/s

• river beds
• navigation channels
• marine channels
• lake channels
• stream channels
• passes (channels)
• cutoffs

Anotations

Scope note:

Feature that is relatively long and narrow and axially located in relation to the waterway, such as used to designate the deepest part of streambeds where the main current runs, or stretches of sea between two land areas and linking two seas.