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Summary Hydrology and Fluvial Geomorphology - Discharge Relationships with Drainage Basins
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Discharge Relations of rivers, AS Geography.
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1.2 Discharge relationships within drainage basinsHydrographs
storm hydrograph: shows how the discharge of a river varies over a
short time.
- refers to an individual storm or a group of storms during an interval
of one day.
- before the storm starts, the main supply of water to the stream is
through groundwater flow or baseflow.
- during the storm, some water infiltrates into the soil while some
flows over the surface as overland flow or runoff.
quickflow: water which reaches the river through overland flow, causing
a rapid rise in the discharge of a river during intense precipitations.
rising limb: shows how quickly the flood waters begin to rise.
recessional limb: the speed with which water level in the river declines
after the peak
peak discharge: maximum discharge carried by a river during a period
of storm
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