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Geography:Rivers
| Term | Definition |
|---|---|
| Source | the point where a river begins |
| Course | the route taken by a river as it flows into the sea |
| Tributary | a small river/stream that joins up with a larger one |
| Confluence | the point at which a tributary joins the river |
| Mouth | the point where a river enters the sea |
| Estuary | the part of a river mouth that is tidal |
| River basin | the area of land that is drained by a river and its tributaries |
| Watershed | the high ground that separates one river basin from another |