Exam 2 Rivers and streams
Radial drainage pattern
A system of streams running in all directions away from a central elevated structure, such as a volcano.
The ocean to which a river may drain in known as
Global base level
The stage of a stream that has done all the work it can do, having large wide meanders associated
Mature stream
An oxbow lake that can no longer hold water due to filling with sediments and vegetation
Meander scar
A sweeping bend of a stream on a flood plain
Meanders
Load
Any materials carried by a stream or river
A stream that branches into many patterns
Braided stream
Alluvium
Clay or silt or gravel carried by rushing streams and deposited where the stream slows down
The amount of water passing a given point in a given amount of time
Discharge
Intermittent drainage
Epheneral vs Perennial
Fluvial Processes
Erosion, transport, Deposition
Atomospheric processes
Evaporation / condensation
A cut off meander forms this
Oxbow lake
Perennial
PRESENT THROUGHOUT THE YEARS; PERSISTENT stay year round
The drainage pattern on Mt Shasta
Radial
Vigorous down cutting and a narrow V-shaped valley is characteristics of this
Rejuvenated
Surface processes
Runoff / Infiltration
Dissolved material carried by a stream
Solution
Exotic Stream
Stream that flows into a dry region, bringing its water from somewhere else. flows through a region where it would never form
Clay size particles are carried in by a stream
Suspension
Discharge rate
The amount of water that passes a fixed point in a given amount of time, usually expressed as liters or cubic feet of water per second
suspended load
The load contains small rocks and soil in suspension, which can make the river look muddy.
Regional
a larger drainage system like a stream or river
Tributary
a smaller stream feeding to a larger
High gradient
able to move large loads/ mountain
Gradient
an incline or slope; the rate of incline rise/run Change in elevation Change in distance
Annulan / centripetal
directed toward the center.
Type of meanders found in a rejuvenated stream
entrenched / incised
Moderate gradient
foot hills
Stream terrace
remnants of the former floodplain of a stream of river. They are formed by the downcutting of a river or stream channel into and the abandonment and lateral erosion of its former floodplain.
Bed load
sand, pebbles, and boulders that are moved along the bed of a stream and that are too heavy to be carried in suspension
Global /ultimate
sea level
Epheneral
short-lived river. Dries up during summer
low gradient
small/long
Base level
water that falls off your house. It is the very smallest of drainage. For us it is drywells
Channel
V_shaped depression, collector of water that flows down into larger bodies of water
