• Drainage Basin/Catchment Area - Area of land drained by a river
• Watershed - Boundary between 2 drainage basins
• Source - The beginning or start of a river.
• Confluence - the point at which two rivers or streams join.
• Tributary - a stream or smaller river joins a larger stream or river.
• Mouth is where the river ends, usually when entering the sea.

Factors → Work Of River -

1. Velocity - [Greater the velocity, larger the material can be transported]
2. Volume - More water, more load

Deposition - Reasons -

Anywhere where work of river is decreased:

1. Slower water
2. Smaller volume of water

Discharge:

Volume of water flowing down the river at any one time [Cubic meters per second]

Types of river channels -