Exam 2 Rivers and streams

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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


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