5.3 Water Budgets and River Systems Flashcards
5.3a Water Budgets
water budget
the water budget is the annual balance between precipitation, evapotranspiration and runoff
5.3a Water Budgets
P = E + R +/- S
P = E + R +/- S
P is precipitation
E is evapotranspiration
R is runoff
S is changes in storage over time
5.3a Water Budgets
local scale water budgets
available soil water
this is the amount of water that can be stored in the soil and is available for growing crops
this is valuable to users, such as farmers, who can use it to identify when irrigation might be required and how much
5.3a Water Budgets
regional scale water budgets
agriculture
domestic consumption
5.3a Water Budgets
national scale water budgets
amount of water that is available for human use
5.3b River Regimes
river regimes
river regimes indicate the annual variation of discharge of a river
5.3b River Regimes
factors affecting river regimes
climate:
the amount, seasonality and intensity of the precipitation
the temperatures, which possible meltwater and high rates of evaporation in the summer
geology:
their permeability and porosity
soils:
5.3c Storm Hydrographs
physical features: size
a
5.3c Storm Hydrographs
physical features: shape
a
5.3c Storm Hydrographs
physical features: drainage density
a
5.3c Storm Hydrographs
physical features: rock type
a
5.3c Storm Hydrographs
physical features: soil
a
5.3c Storm Hydrographs
physical features: relief
a
5.3c Storm Hydrographs
physical features: vegetation
a
5.3c Storm Hydrographs
features of a storm hydrograph
a
