hydrograph
Noun
Meaning
A graph of flow past a point in a river versus time.
A graph of water table versus time.
Source: en.wiktionary.orgSynonyms
Examples
As a result, the rising limb of the hydrograph becomes ever quicker as the flood moves downstream, until the flow rate is so great that the depletion by wetting soil becomes insignificant.
For example, a basin model can calculate the runoff hydrograph that might result from a 100-year storm, although the recurrence interval of a storm is rarely equal to that of the associated flood.