Lab 7: River Systems
GEOG 1113L – Introduction to Landforms Lab
I. How Rivers Shape the Landscape
1. What are the two defining factors that distinguish how water moves in a stream?
Deposition&Erosion
2. What are the different sources of water in a stream system?
Rain Spring Lakes Water in soil (Ground water)
3. What are the different names for the entire area that encompasses the main channel and all of
its tributaries, all of which drain to a single point?
Drainage Basins, Stream system, Shed (Water shed)
4. Describe what first order streams are.
Streams with no tributaries. Often the head waters
5. What is stream gradient and what is its primary influence?
The elevation of the stream drops over a given distance.
6. ____ Stream Load_____ describes how much sediment a stream can carry and dissolve.
7. As the stream gradient and velocity of the river changes, stream load changes as well. High
velocity carries a __Suspend___ load, while low velocity carries a __Bed___ load.
8. What is the difference in location between an alluvial fan and a delta?
Alluvial-Where two rivers meet, mainly mountain bottoms Delta-End of the river into ocean
, 9. Describe a river with high sinuosity.
The inside of the bend is shallow and the water is slower
10. In a meandering river, the __Inner__side of the river is slower and deposits sediment, while the
_Outer_side of the river is faster and deeper.