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Flashcards in Drainage Basin Systems Deck (12)
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1

What is a drainage basin?

area that supplies a river with its supply of water

2

How are drainage basins separated from each other?

by high and called a watershed

3

Input to the drainage basin?

precipitation

4

What does vegetation provided?

interception store

5

What do studies show about needle-leaf trees compared to broad-leaf trees?

needle-leaf trees capture 22% of rainfall
broad-leaf trees capture 19% of rainfall

6

What is throughfall?

water making its way from the leaves of trees to the ground drips / falls by this process - from one interception store to another

7

What is stemflow?

when water flows down the stems of grasses

8

What is infiltration rate controlled by?

gravity, capillary action and soil porosity

9

What is soil storage?

amount of water stored in the soils

10

Difference between pores in clay soil and fine sand?

clay soil = 40%-60% of volume
fine sand = 20%-45% of volume

11

What is vegetation storage?

plants removing water from the soil and storing it in the structure of the plant

12

What is percolation?

water moving vertically down through the soil and unsaturated rock