Question

Measurement of Water Balance

27 Jul 2026
Answer :
Word Count : 275
Measurement of water balance involves the quantitative assessment of the inflow, outflow, and storage changes of water within a defined hydrological system such as a watershed, river basin, lake, or groundwater aquifer. It is based on the principle of conservation of mass, according to which the total water entering a system equals the total water leaving it plus or minus the change in storage over a specified period. The general water balance equation is expressed as: P = Q + ET ± ΔS, where P is precipitation, Q is runoff or streamflow, ET is evapotranspiration, and
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