Post on 25-May-2015
transcript
Surface WaterSurface Water
Stream StagesStream Stages
________:________: RapidsRapids WaterfallsWaterfalls Fast-moving waterFast-moving water Steep slopeSteep slope
_______:_______: Broad floodplainBroad floodplain MeandersMeanders Oxbow lakesOxbow lakes Meander ScarsMeander Scars
Youthful Old
Important DefinitionsImportant Definitions
____________ – a stream and all its ____________ – a stream and all its tributariestributaries
________ – a smaller stream that empties ________ – a smaller stream that empties into a larger streaminto a larger stream
_________ – the land area drained by a _________ – the land area drained by a river systemriver system
______ – a high point that separates river ______ – a high point that separates river systemssystems
River System
Tributary
Watershed
Divide
________ – the bends and curves ________ – the bends and curves of a streamof a stream
Meanders
Oxbow lake
deposition
erosion
____________ – deposit formed when a ____________ – deposit formed when a stream spreads out onto a less steep areastream spreads out onto a less steep areaAlluvial Fan
_____ – where a stream empties _____ – where a stream empties into a larger body of waterinto a larger body of water
Delta
____________ – when an old age stream ____________ – when an old age stream downcuts to “make it new again”downcuts to “make it new again”
Rejuvenation
Stream LoadStream Load
A stream can carry its load in three A stream can carry its load in three different ways:different ways:
1.________ – material is dissolved 1.________ – material is dissolved 2.__________ – particles are held up by 2.__________ – particles are held up by
stream’s moving waterstream’s moving water 3._________ – material pushed or rolled 3._________ – material pushed or rolled
along the stream’s channelalong the stream’s channel
solution
suspension
bed load
Stream DischargeStream Discharge
Discharge is the amount of water that Discharge is the amount of water that flows past a point in a certain amount of flows past a point in a certain amount of time.time.
Discharge is dependent upon velocity, Discharge is dependent upon velocity, depth, and width of the stream.depth, and width of the stream.
Discharge = _______ x _____ x _____Discharge = _______ x _____ x _____velocity depth width
Surface Water Review
solution, suspension, bed load
land area drained by a river system
divide
Surface Water Review (continued)
in the center
along the sides and bottom because of the friction with the channel
a bend or curve in the stream
Maximum on the outside of the meander and minimum on the inside
inside of meanders
channel