| A | B |
| alluvial fan | fanlike deposits of river sediments where a mountain meets a flat area |
| base level | the lowest level a river can erode to ... the mouth |
| bedload | boulders and pebbles carried along a streambed by traction |
| delta | fanshaped deposits at the mouth of a river |
| dissolved load | the 'invisible' load carried by a river |
| distributaries | streams that flow out of river across a delta |
| drainage basin | all the land that drains a body of water |
| drainage divide | high land that separates watersheds |
| watershed | all the land that drains a body of water |
| floodplain | flat land on either side of a river that floods easily |
| gully | a channel in soil formed by erosion |
| headwaters | river source |
| levee | build up of sediments on the bank of a river due to flooding |
| load | all the stuff carried by a river |
| meander | a bend or curve in a river |
| mouth | the body of water a river empties into |
| oxbow lake | a meander cut off by repeated erosion and deposition |
| rapids | water flows fast over hard rocks left after soft ones have eroded |
| rill | a tiny groove in soil made by runoff |
| runoff | water that flows across earth's surface |
| saltation | the hopping & skipping of sand & gravel as they move in a river |
| source | where the river begins |
| suspended load | clay and silt particles that make a river 'muddy' |
| traction | rolling & sliding of boulders & pebbles across a streambed |
| tributary | streams that flow into a major river |
| trunk | the main river channel |