The hydrologic budget for a catchment in a given duration can be written as •This water budget can be used to estimate AET, if other terms are known or measured or estimated. Measurement of ET For a given type of ...
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EVAPOTRANSPIRATION
Transpiration It is the process by which water (taken up by the plant from the soil through its root system) leaves the body of a living plant through the stomatal openings in its leaves and reaches the atmosphere as water ...
Evaporation and its Methods of Measurement
What is Evaporation and How it Occurs? Before rainfall reaches the outlet of a basin as runoff, certain demands of the catchment such as interception, depression storage and infiltration have to be met. Besides these, evaporation and transpiration processes transfer ...
PROBABLE MAXIMUM PRECIPITATION (PMP)
PROBABLE MAXIMUM PRECIPITATION (PMP) • PMP is used in the design of major hydraulic structures such as spillways in large dams • There appears to be a physical upper limit to the amount of precipitation that can occur over a ...
Mean Precipitation Calculation Over an Area
Mean Precipitation Calculation Over an Area Raingauge – does point sampling of the areal distribution of a storm Hydrological Analysis – requires information on rainfall over an area, say, over a catchment Methods used to convert point rainfall values at ...
Analysis and Presentation of Rainfall Data
Analysis of Rainfall Data Before using rainfall records at a station for any analysis, the data has to be checked for Continuity Consistency Missing rainfall data can be estimated using the rainfall data at neighbouring stations. Estimation of Missing Rainfall ...