The speed the river water flows through the river channel. It is measured in m/s. The equation...
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River discharge
Volume of water passing a given point in a river at a given time. It is measured in m3/s. The equation is...
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Runoff/ Storm flow
The water that arrives in the river by surface run off or through-flow of the rock (rapid).
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Rising limb
It indicates how quickly a river responds to the 'storm' and represents the rising discharge of the river. The steeper the rising limb the more likely the river is to flood.
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Falling/ Receding limb
It indicates the rate the river discharge falls, it shows when the river returns to base flow.
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Peak Discharge
The maximum amount of water in the river after the rainfall event.
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Bankfull discharge
The maximum amount of discharge that a river can hold before it burst its banks and floods. If the bank-full discharge is exceeded the river will flood and over top/ burst the banks
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Lag time
The amount of time between peak discharge and peak rainfall. Typically, the shorter the lag time, the faster the discharge of the river will increase- more likely to flood and will create a 'flashy' hydrograph.
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Peak Rainfall
The highest amount of rainfall that occurred in one rainfall event
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Discharge line
This follows and shows how much water is in the river.
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Labels
Hours after rainfall event, Rainfall (mm), River channel runoff/ discharge (cumecs) - cubic meter per second
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Other cards in this set
Card 2
Front
Volume of water passing a given point in a river at a given time. It is measured in m3/s. The equation is...
Back
River discharge
Card 3
Front
The water that arrives in the river by surface run off or through-flow of the rock (rapid).
Back
Card 4
Front
It indicates how quickly a river responds to the 'storm' and represents the rising discharge of the river. The steeper the rising limb the more likely the river is to flood.
Back
Card 5
Front
It indicates the rate the river discharge falls, it shows when the river returns to base flow.
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