Catchment hydrology

Catchment hydrology, is the study of the hydrology in drainage basins.

Catchment hydrology is based on the principal of continuity, which is used to perform a water balance on a catchment:

${\displaystyle I-O=dS/dt}$,

where ${\displaystyle I}$ = inputs (P, precipitation + OW, occult water), ${\displaystyle O}$ = outputs (ET, evapotranspiration + R, runoff), and ${\displaystyle dS/dt}$ = the change in catchment storage over time.

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