Card Set Information
An impermeable layer that hinders or prevents water movement.
Permeable rock strata or sediment that transmits groundwaterfreely.
Moves under the influence of gravity
Portion retained as a film on particle and rock surfaces andtiny openings
the ability of a material to transmit a fluid
percentage of total volume of rock or sediment that consists of pore spaces
Factors that are important to groundwater movement:
Gain water from the inflow of groundwater through the streambed
lose water to the groundwater system by outflow through the streambed
Where do the highest velocities occur?
The center just below the surface
Factors that determine velocity:
1.Gradient, or slope
2.Channel characteristics including shape, size, and roughness
3.Discharge – the volume of water moving past a given point in a certain amount of
Factors that increase downstream:
Factors that decrease downstream:
Important stream zones based on dominant process:
Types of load:
The maximum load a stream can transport
Particles that make up the bed load move along the bottom
Streams actively cutting into solid rock
Facts about meandering streams
•Migrates laterally and down valley
•Mostly fine-grained particles
•Deep, smooth channel
•Can form many Oxbow Lakes
•Sand-, gravel-, and boulder-sized particles
•Intermittent flow (seasonal)
•Channels are shallow and narrow
Where do Alluvial fans develop?
where a high-gradient mountainous stream leaves a narrow valley