Lag (of a basin)
Water
The measure of the time between the center of mass of precipitation to the center of mass of runoff (on the hydrograph); basin lag is a function of not only basin characteristics, but also of storm intensity and movement. Some hydrologic texts define lag from the center of mass of rainfall to the hydrograph peak.
- — Service Hydrologist Reference Manual Glossary of Hydrologic Terms retrieved 2014-06-01