1.2 Rainfall- discharge relationships with drainage basins Flashcards Preview

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Flashcards in 1.2 Rainfall- discharge relationships with drainage basins Deck (10)
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1

River Regime

Annual variation in the flow of a river

2

Flood or Storm hydrograph

Shows how a river changes over a short period.

3

Rising limb

Shows how quickly the flood waters begin to rise

4

Peak flow

Maximum discharge of the river as a result of the storm

5

Time lag

Time between the height of the storm and the maximum flow of the river

6

Recessional limb

The speed with which the water level in the river declines after the peak

7

Baseflow

Normal level of the river, fed by groundwate

8

Quickflow or Stormflow

Water that gets into the river as a result of overland runoff

9

Annual Hydrograph

(AKA river regime) Average annual flow of a river.

10

Antecedent moisture

Moisture already in the soil before a rainfall event