Flashcards
Hydrographs
Cards in this deck (9)
- 1What is Drainage Density?The relaive density (mass) of natural drainage channels in a given area.
Obtained by- dividing the total length of stream channels by the total area of the drainage basin - 2What does a lower density mean?Lower chances of flooding because land around is less saturated
- 3How does the amount of rain affect the shape of the hyrdographmore rainfall- more infiltration- saturated land- less infiltration- more overland flow- higher discharge- shorter lag time- floods
- 4How does temperature affect the shape of the hyrdographif there are glaciers and high temperatures- they will melt- more overland flow- higher discharge- shorter lag time- floods
- 5How does steep slopes affect the shape of the hyrdographsteeper gradient- more overland flow- less infiltration- shorter lag time- higher discharge- floods
- 6How does the rock type affect the shape of the hyrdographif rock is permeable- more infiltration- less discharge- longer lag time- less floods
- 7How does dams and reservoirs affect the shape of the hyrdographland less saturated- less water downstream- less discharge- longer lag time- less floods
- 8How does the abstraction of water affect the shape of the hyrdographif more water taken out- less discharge- longer lag time- less floods
- 9How does the drainagge density affect the shape of the hyrdographif higher- soill around is more saturated- less infiltration- more overland flow- shorter lag time- higher discharge- floods
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- Geography (Rivers) Flashcards on Hydrographs, created by Nashmoon Sheena on 06/04/2018.
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- Nashmoon Sheena
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