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Geography Rivers Terminology
Quiz On Definitions
28
Geography
11th Grade
09/26/2012

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Cards

Term
River Regime
Definition
Normal activity of a river
Term
River Discharge
Definition
Amount of water that flows through river bed
Term
River Runoff
Definition
Amount of surplus water
Term
Tributary
Definition
Stream or river that flows into a larger one
Term
Hydrograph
Definition
 A graph showing changes in the discharge of a river over a period of time.
Term
Percolation
Definition
Vertical movement or infiltration of water from the Earth's surface to its subsurface. 
Term
Surface storage
Definition
Part of precipitation retained temporarily at ground surface
Term
Groundwater Storage
Definition
Groundwater storage is water that is found underground in the cracks and spaces in soil, sand and rock
Term
Infiltration
Definition
The process of water entering soil
Term
Soil Moisture Storage
Definition
Water found in the soil
Term
Interception
Definition
When natural features such as leaves or trees stop water from entering ground
Term
Throughflow
Definition
Horizontal movement of water through soil
Term
Surface run-off
Definition
water flow that occurs when soil is infiltrated to full capacity
Term
Transpiration
Definition
loss of water vapor from parts of plants
Term
Evaporation
Definition
Vaporization of liquid's surface
Term
Channel Storage
Definition
The volume of water at a given time in the channel or over the flood plain of the streams in a drainage basin or river reach
Term
Porous
Definition
When water goes through pores
Term
Permeable
Definition
When water goes through spaces in rock
Term
Bed
Definition
Bottom of river channel
Term
Bank
Definition
Sides of river channel
Term
Channel
Definition
Confines of river
Term
Wetted Perimiter
Definition
Length of bed + banks in contact w/ river
Term
Hydraulic Radius
Definition
Ratio between area of cross section and wetted perimeter
Term
Rising Limb
Definition
The rising portion of the hydrograph resulting from runoff of rainfall or snowmelt.
Term
Lag Time
Definition
The time between when a rainfall occurs, and when that water makes it to the river 
Term
Recessional Limb
Definition
When the graph declines into normal state
Term
Bankfull Discharge
Definition
the maximum discharge that a particular river channel is capable of carrying without flooding..
Term
Baseflow
Definition
  • The amount of water in a stream that results from ground water discharge.
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