π A flow duration curve is a plot of discharge against the percentage of time the flow was equaled or
exceeded. This curve is also known as discharge frequency curve.
πLine joining points of equal rainfall depth is called isohyet.
π Isopleths are line on a map through points having equal depth of evapotranspiration.π Bowen's ratio is defined as the ratio of Sensible heat transfer from water surface to air (Ha) to Heat energy used up in evaporation (He)
π Property Measuring Instrument
Evapotranspiration Lysimeter
Capillary Potential Tensiometer
Transpiration Phytometer
Evaporation Atmometer
Hydraulic Conductivity Permeameter
Infiltration Capacity Infiltrometer
Rainfall Simulator
Humidity Hygrometer
Relative Humidity Psychrometer
Wind Speed Anemometer
π Ratio of total channel length to the discharge area is called drainage density.
π Hyetograph: Rainfall intensity versus time
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